Budesonide

6 ADVERSE REACTIONS Systemic glucocorticosteroid use may result in the following: Hypercorticism and Adrenal Suppression [see Warnings and Precautions (5.1) ] Symptoms of steroid withdrawal in those patients transferring from Systemic Glucocorticosteroid Therapy [see Warnings and Precautions (5.2) ] Immunosuppression [see Warnings and Precautions (5.3) ] Increased Systemic Glucocorticoid Susceptibility [see Warnings and Precautions (5.4) ] Other Glucocorticosteroid Effects [see Warnings and Precautions (5.5) ] Most common adverse reactions (incidence greater than or equal to 2%) are headache, nausea, decreased blood cortisol, upper abdominal pain, fatigue, flatulence, abdominal distension, acne, urinary tract infection, arthralgia, and constipation. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Actavis at 1-888-838-2872 or FDA at 1-800-FDA-1088 or www.fda.gov/ medwatch . 6.1 Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. The safety of budesonide extended-release tablets have been evaluated in controlled and open-label clinical trials which enrolled a combined total of 1,105 patients with ulcerative colitis. In two 8-week, placebo-controlled studies in patients with active disease (Study 1 and Study 2), a total of 255 patients received budesonide extended-release tablets 9 mg, 254 patients received budesonide extended-release tablets 6 mg, and 258 patients received placebo. They ranged in age from 18 to 77 years (mean = 43), 56% were male, and 75% were Caucasian. The most common adverse reactions were headache, nausea, decreased blood cortisol, upper abdominal pain, fatigue, flatulence, abdominal distension, acne, urinary tract infection, arthralgia, and constipation. The adverse reactions occurring in 2% or more of patients on therapy with budesonide extended-release tablets 9 mg are summarized in Table 1. Table 1. Summary of Adverse Reactions in Two Placebo-Controlled Trials Experienced by at Least 2% of the Budesonide Extended-Release Tablets 9 mg Group (Studies 1 and 2) Budesonide Extended-Release Tablets 9 mg (N = 255) n (%) Budesonide Extended-Release Tablets 6 mg (N = 254) n (%) Placebo (N = 258) n (%) Headache 29 (11.4) 37 (14.6) 27 (10.5) Nausea 13 (5.1) 12 (4.7) 11 (4.3) Decreased blood cortisol 11 (4.3) 6 (2.4) 1 (0.4) Upper abdominal pain 10 (3.9) 8 (3.1) 5 (1.9) Fatigue 8 (3.1) 5 (2.0) 5 (1.9) Flatulence 6 (2.4) 8 (3.1) 5 (1.9) Abdominal distension 6 (2.4) 4 (1.6) 2 (0.8) Acne 6 (2.4) 2 (0.8) 5 (1.9) Urinary tract infection 5 (2.0) 1 (0.4) 1 (0.4) Arthralgia 5 (2.0) 5 (2.0) 4 (1.6) Constipation 5 (2.0) 1 (0.4) 2 (0.8) Of budesonide extended-release tablets 9 mg patients, a total of 15% discontinued treatment due to any adverse event (including adverse reactions) compared with 17% in the placebo group. Table 2 summarizes the percentages of patients reporting glucocorticoid-related effects in the 2 placebo-controlled studies. Table 2. Summary of Glucocorticoid-Related Effects in Two Placebo-Controlled Trials (Studies 1 and 2) Budesonide Extended-Release Tablets 9 mg (N = 255) n (%) Budesonide Extended-Release Tablets 6 mg (N = 254) n (%) Placebo (N = 258) n (%) Overall 26 (10.2) 19 (7.5) 27 (10.5) Mood changes 9 (3.5) 10 (3.9) 11 (4.3) Sleep changes 7 (2.7) 10 (3.9) 12 (4.7) Insomnia 6 (2.4) 6 (2.4) 8 (3.1) Acne 6 (2.4) 2 (0.8) 5 (1.9) Moon face 3 (1.2) 3 (1.2) 4 (1.6) Fluid retention 2 (0.8) 3 (1.2) 3 (1.2) Hirsutism 1 (0.4) 0 0 Striae rubrae 0 0 2 (0.8) Flushing 0 1 (0.4) 3 (1.2) No clinically significant differences were observed with respect to the overall percentages of patients with any glucocorticoid-related effects between budesonide extended-release tablets and placebo after 8 weeks of induction therapy. Study 3 was an open-label study evaluating budesonide extended-release tablets 9 mg once daily for 8 weeks in 60 patients who had previously completed an 8-week induction study (Study 1) but had not achieved remission. Among patients who took budesonide extended-release tablets 9 mg up to 16 weeks cumulatively across Study 1 and Study 3 combined, similar rates of adverse reactions and glucocorticoid-related effects were seen compared to those who took budesonide extended-release tablets 9 mg for 8 weeks in Study 1. In Study 4, the safety of long-term treatment with budesonide extended-release tablets 6 mg was evaluated in a placebo-controlled 12-month maintenance study of 123 patients. Patients who had previously completed 8 weeks of therapy in any induction study (Study 1, 2, or 3) and were in remission were randomized to budesonide extended-release tablets 6 mg or placebo once daily for 12 months. In patients who took budesonide extended-release tablets 6 mg for up to 12 months, similar rates of adverse reactions were seen between placebo and budesonide extended-release tablets 6 mg. After up to 12 months of study treatment, 77% (27/35) of the patients in the budesonide extended-release tablets 6 mg and 74% (29/39) of the patients in the placebo treatment groups had normal bone density scans. In Study 4, the glucocorticoid-related effects were similar in patients with up to 12 months of therapy with budesonide extended-release tablets 6 mg and placebo (Table 3). Table 3. Summary of Glucocorticoid-Related Effects Over 12-Month Treatment (Study 4) Budesonide Extended-Release Tablets 6 mg (N = 62) n (%) Placebo (N = 61) n (%) Overall 9 (14.5) 7 (11.5) Insomnia 4 (6.5) 4 (6.6) Mood changes 4 (6.5) 2 (3.3) Moon face 3 (4.8) 3 (4.9) Sleep changes 3 (4.8) 3 (4.9) Acne 3 (4.8) 0 Hirsutism 3 (4.8) 0 Flushing 1 (1.6) 1 (1.6) Fluid retention 1 (1.6) 1 (1.6) 6.2 Postmarketing Experience In addition to adverse events reported from clinical trials, the following adverse reactions have been identified during post-approval use of oral budesonide. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure. These events have been chosen for inclusion due to either their seriousness, frequency of reporting or causal connection to budesonide extended-release tablets, or a combination of these factors. Gastrointestinal Disorders: diarrhea, rectal bleeding General Disorders and Administrative Site Conditions: peripheral edema Immune System Disorders: anaphylactic reactions Musculoskeletal and Connective Tissue Disorders: muscle cramps/spasms Nervous System Disorders: benign intracranial hypertension, dizziness Psychiatric Disorders: mood swings Skin and Subcutaneous Tissue Disorders: rash Vascular Disorders: increased blood pressure

4 CONTRAINDICATIONS Budesonide extended-release tablets are contraindicated in patients with hypersensitivity to budesonide or any of the ingredients of budesonide extended-release tablets. Anaphylactic reactions have occurred with other budesonide formulations [see Adverse Reactions (6.2) ]. Known hypersensitivity to budesonide or any of the ingredients in budesonide extended-release tablets ( 4 )

11 DESCRIPTION Budesonide extended-release tablets, for oral administration, contain budesonide USP, a synthetic corticosteroid, as the active ingredient. Budesonide, USP is designated chemically as (RS)-11β, 16α, 17, 21 tetrahydroxypregna-1,4-diene-3,20-dione cyclic 16,17-acetal with butyraldehyde. Budesonide, USP is provided as a mixture of two epimers (22R and 22S). The empirical formula of budesonide, USP is C 25 H 34 O 6 and its molecular weight is 430.54. Its structural formula is: Budesonide, USP is a white to almost white, tasteless, odorless powder that is practically insoluble in water, sparingly soluble in alcohol, and freely soluble in chloroform. Budesonide extended-release, a delayed and extended-release tablet, is coated with a polymer film, which breaks down at or above pH 7. The tablet core contains budesonide with polymers that provide for extended-release of budesonide. Each tablet contains the following inactive ingredients: colloidal silicon dioxide, hydroxypropyl cellulose, hypromellose 2910, iron oxide black, lactose monohydrate, magnesium stearate, methacrylic acid copolymer types A and B, microcrystalline cellulose, polyethylene glycol 3350, polysorbate 80, propylene glycol, sodium starch glycolate Type A, soy lecithin powder, talc, titanium dioxide, and triethyl citrate. The structural formula for Budesonide

2 DOSAGE AND ADMINISTRATION The recommended dosage for the induction of remission in adult patients with active, mild to moderate ulcerative colitis is one 9 mg tablet to be taken once daily in the morning with or without food for up to 8 weeks. ( 2.1 ) 2.1 Mild to Moderate Ulcerative Colitis The recommended dosage for the induction of remission in adult patients with active, mild to moderate ulcerative colitis is 9 mg taken orally once daily in the morning with or without food for up to 8 weeks. Budesonide extended-release tablets should be swallowed whole and not chewed, crushed or broken. 2.2 CYP3A4 Inhibitors If concomitant administration with ketoconazole, or any other CYP3A4 inhibitor, is indicated, patients should be closely monitored for increased signs and/or symptoms of hypercorticism. Avoid grapefruit juice, which is known to inhibit CYP3A4, when taking budesonide extended-release tablets. In these cases, discontinuation of budesonide extended-release tablets or the CYP3A4 inhibitor should be considered [see Drug Interactions (7) and Clinical Pharmacology (12.3) ].

1 INDICATIONS AND USAGE Budesonide extended-release tablets are indicated for the induction of remission in patients with active, mild to moderate ulcerative colitis. Budesonide extended-release tablets are a glucocorticosteroid indicated for the induction of remission in patients with active, mild to moderate ulcerative colitis. ( 1 )

10 OVERDOSAGE Reports of acute toxicity and/or death following overdosage of glucocorticosteroids are rare. Treatment consists of immediate gastric lavage or emesis followed by supportive and symptomatic therapy. If glucocorticosteroids are used at excessive doses for prolonged periods, systemic glucocorticosteroid effects, such as hypercorticism and adrenal suppression may occur. For chronic overdosage in the face of severe disease requiring continuous steroid therapy, the dosage may be reduced temporarily. Single oral budesonide doses of 200 and 400 mg/kg were lethal in female and male mice, respectively. The signs of acute toxicity were decreased motor activity, piloerection and generalized edema.

7 DRUG INTERACTIONS Avoid cytochrome P450 3A4 inhibitors (e.g., ketoconazole, grapefruit juice). May cause increased systemic corticosteroid effects. ( 2.2 , 7 , 12.3 ) 7.1 Interaction with CYP3A4 Inhibitors Concomitant oral administration of ketoconazole (a known inhibitor of CYP3A4 activity in the liver and in the intestinal mucosa) caused an eight-fold increase of the systemic exposure to oral budesonide. If treatment with inhibitors of CYP3A4 activity (such as ketoconazole, itraconazole, ritonavir, indinavir, saquinavir, erythromycin) is indicated, discontinuation of budesonide extended-release tablets should be considered. After extensive intake of grapefruit juice (which inhibits CYP3A4 activity predominantly in the intestinal mucosa), the systemic exposure for oral budesonide increased about two times. Ingestion of grapefruit or grapefruit juice should be avoided in connection with budesonide extended-release tablets administration [see Dosage and Administration (2) and Clinical Pharmacology (12.3) ]. 7.2 Inhibitors of Gastric Acid Secretion Since the dissolution of the coating of budesonide extended-release tablets is pH dependent, the release properties and uptake of the compound may be altered when budesonide extended-release tablets are used after treatment with gastric acid reducing agents (e.g., proton pump inhibitors (PPIs), H 2 blockers and antacids).

12 CLINICAL PHARMACOLOGY 12.1 Mechanism of Action Budesonide has a high topical glucocorticosteroid (GCS) activity and substantial first-pass elimination. The formulation contains budesonide in an extended-release tablet core. The tablet core is enteric coated to protect dissolution in gastric juice which delays budesonide release until exposure to a pH greater than or equal to 7 in the small intestine. Upon disintegration of the coating, the core matrix provides extended-release of budesonide in a time dependent manner. 12.2 Pharmacodynamics Budesonide has a high glucocorticoid effect and a weak mineralocorticoid effect, and the affinity of budesonide to GCS receptors, which reflects the intrinsic potency of the drug, is about 200-fold that of cortisol and 15-fold that of prednisolone. Treatment with systemically active GCS, including budesonide extended-release tablets, is associated with a suppression of endogenous cortisol concentrations and an impairment of the hypothalamus-pituitary-adrenal (HPA) axis function. Markers, indirect and direct, of this are cortisol levels in plasma or urine and response to ACTH stimulation. In a study assessing the response to ACTH stimulation test in patients treated with budesonide extended-release tablets 9 mg once daily, the proportion of patients with abnormal response was 47% at 4 weeks and 79% at 8 weeks. 12.3 Pharmacokinetics Absorption Following single oral administration of budesonide extended-release tablets 9 mg in healthy subjects, peak plasma concentration (C max ) was 1.35 ± 0.96 ng/mL, the time to peak concentration (T max ) on average was 13.3 ± 5.9 hours, although it varied across different individual patients, and the area under the plasma concentration time curve (AUC) was approximately 16.43 ± 10.52 ng·hr/mL. The pharmacokinetic parameters of budesonide extended-release tablets 9 mg have a high degree of variability among subjects. There was no accumulation of budesonide with respect to both AUC and C max following 7 days of budesonide extended-release tablets 9 mg once daily dosing. Food Effect A food-effect study involving administration of budesonide extended-release tablets to healthy volunteers under fasting conditions and with a high-fat meal indicated that the C max was decreased by 27% while there was no significant decrease in AUC. Additionally, a mean delay in absorption lag time of 2.4 hours was observed under fed conditions. Distribution The mean volume of distribution (V SS ) of budesonide varies between 2.2 and 3.9 L/kg in healthy subjects and in patients. Plasma protein binding is estimated to be 85 to 90% in the concentration range 1 to 230 nmol/L, independent of gender. The erythrocyte/plasma partition ratio at clinically relevant concentrations is about 0.8. Elimination Metabolism Following absorption, budesonide is subject to high first-pass metabolism (80 to 90%). In vitro experiments in human liver microsomes demonstrate that budesonide is rapidly and extensively biotransformed, mainly by CYP3A4, to its 2 major metabolites, 6β–hydroxy budesonide and 16α-hydroxy prednisolone. The glucocorticoid activity of these metabolites is negligible (less than 1/100) in relation to that of the parent compound. In vivo investigations with intravenous doses in healthy subjects are in agreement with the in vitro findings and demonstrate that budesonide has a high plasma clearance, 0.9 to 1.8 L/min. These high plasma clearance values approach the estimated liver blood flow, and, accordingly, suggest that budesonide is a high hepatic clearance drug. The plasma elimination half-life, t 1/2 , after administration of intravenous doses ranges between 2 and 3.6 hours. Excretion Budesonide is excreted in urine and feces in the form of metabolites. After oral as well as intravenous administration of micronized [ 3 H]-budesonide, approximately 60% of the recovered radioactivity is found in urine. The major metabolites, including 6β-hydroxy budesonide and 16α-hydroxy prednisolone, are mainly renally excreted, intact or in conjugated forms. No unchanged budesonide is detected in urine. Specific Populations Patients with Renal Impairment The pharmacokinetics of budesonide in patients with renal impairment have not been studied. Intact budesonide is not renally excreted, but metabolites are to a large extent, and might therefore reach higher levels in patients with impaired renal function. However, these metabolites have negligible corticosteroid activity as compared with budesonide (less than 1/100). Patients with Hepatic Impairment In patients with liver cirrhosis, systemic availability of orally administered budesonide correlates with disease severity and is, on average, 2.5-fold higher compared with healthy controls. Patients with mild liver disease are minimally affected. Patients with severe liver dysfunction were not studied. Absorption parameters were not altered, and for the intravenous dose, no significant differences in CL or V SS were observed. Drug Interaction Studies Budesonide is metabolized via CYP3A4. Potent inhibitors of CYP3A4 can increase the plasma levels of budesonide several-fold. Coadministration of ketoconazole results in an eight-fold increase in AUC of budesonide, compared to budesonide alone. Grapefruit juice, an inhibitor of gut mucosal CYP3A, approximately doubles the systemic exposure of oral budesonide. Conversely, induction of CYP3A4 can result in the lowering of budesonide plasma levels [see Dosage and Administration (2) and Drug Interactions (7)]. Oral contraceptives containing ethinyl estradiol, which are also metabolized by CYP3A4, do not affect the pharmacokinetics of budesonide. Budesonide does not affect the plasma levels of oral contraceptives (i.e., ethinyl estradiol).

12.1 Mechanism of Action Budesonide has a high topical glucocorticosteroid (GCS) activity and substantial first-pass elimination. The formulation contains budesonide in an extended-release tablet core. The tablet core is enteric coated to protect dissolution in gastric juice which delays budesonide release until exposure to a pH greater than or equal to 7 in the small intestine. Upon disintegration of the coating, the core matrix provides extended-release of budesonide in a time dependent manner.

12.2 Pharmacodynamics Budesonide has a high glucocorticoid effect and a weak mineralocorticoid effect, and the affinity of budesonide to GCS receptors, which reflects the intrinsic potency of the drug, is about 200-fold that of cortisol and 15-fold that of prednisolone. Treatment with systemically active GCS, including budesonide extended-release tablets, is associated with a suppression of endogenous cortisol concentrations and an impairment of the hypothalamus-pituitary-adrenal (HPA) axis function. Markers, indirect and direct, of this are cortisol levels in plasma or urine and response to ACTH stimulation. In a study assessing the response to ACTH stimulation test in patients treated with budesonide extended-release tablets 9 mg once daily, the proportion of patients with abnormal response was 47% at 4 weeks and 79% at 8 weeks.

12.3 Pharmacokinetics Absorption Following single oral administration of budesonide extended-release tablets 9 mg in healthy subjects, peak plasma concentration (C max ) was 1.35 ± 0.96 ng/mL, the time to peak concentration (T max ) on average was 13.3 ± 5.9 hours, although it varied across different individual patients, and the area under the plasma concentration time curve (AUC) was approximately 16.43 ± 10.52 ng·hr/mL. The pharmacokinetic parameters of budesonide extended-release tablets 9 mg have a high degree of variability among subjects. There was no accumulation of budesonide with respect to both AUC and C max following 7 days of budesonide extended-release tablets 9 mg once daily dosing. Food Effect A food-effect study involving administration of budesonide extended-release tablets to healthy volunteers under fasting conditions and with a high-fat meal indicated that the C max was decreased by 27% while there was no significant decrease in AUC. Additionally, a mean delay in absorption lag time of 2.4 hours was observed under fed conditions. Distribution The mean volume of distribution (V SS ) of budesonide varies between 2.2 and 3.9 L/kg in healthy subjects and in patients. Plasma protein binding is estimated to be 85 to 90% in the concentration range 1 to 230 nmol/L, independent of gender. The erythrocyte/plasma partition ratio at clinically relevant concentrations is about 0.8. Elimination Metabolism Following absorption, budesonide is subject to high first-pass metabolism (80 to 90%). In vitro experiments in human liver microsomes demonstrate that budesonide is rapidly and extensively biotransformed, mainly by CYP3A4, to its 2 major metabolites, 6β–hydroxy budesonide and 16α-hydroxy prednisolone. The glucocorticoid activity of these metabolites is negligible (less than 1/100) in relation to that of the parent compound. In vivo investigations with intravenous doses in healthy subjects are in agreement with the in vitro findings and demonstrate that budesonide has a high plasma clearance, 0.9 to 1.8 L/min. These high plasma clearance values approach the estimated liver blood flow, and, accordingly, suggest that budesonide is a high hepatic clearance drug. The plasma elimination half-life, t 1/2 , after administration of intravenous doses ranges between 2 and 3.6 hours. Excretion Budesonide is excreted in urine and feces in the form of metabolites. After oral as well as intravenous administration of micronized [ 3 H]-budesonide, approximately 60% of the recovered radioactivity is found in urine. The major metabolites, including 6β-hydroxy budesonide and 16α-hydroxy prednisolone, are mainly renally excreted, intact or in conjugated forms. No unchanged budesonide is detected in urine. Specific Populations Patients with Renal Impairment The pharmacokinetics of budesonide in patients with renal impairment have not been studied. Intact budesonide is not renally excreted, but metabolites are to a large extent, and might therefore reach higher levels in patients with impaired renal function. However, these metabolites have negligible corticosteroid activity as compared with budesonide (less than 1/100). Patients with Hepatic Impairment In patients with liver cirrhosis, systemic availability of orally administered budesonide correlates with disease severity and is, on average, 2.5-fold higher compared with healthy controls. Patients with mild liver disease are minimally affected. Patients with severe liver dysfunction were not studied. Absorption parameters were not altered, and for the intravenous dose, no significant differences in CL or V SS were observed. Drug Interaction Studies Budesonide is metabolized via CYP3A4. Potent inhibitors of CYP3A4 can increase the plasma levels of budesonide several-fold. Coadministration of ketoconazole results in an eight-fold increase in AUC of budesonide, compared to budesonide alone. Grapefruit juice, an inhibitor of gut mucosal CYP3A, approximately doubles the systemic exposure of oral budesonide. Conversely, induction of CYP3A4 can result in the lowering of budesonide plasma levels [see Dosage and Administration (2) and Drug Interactions (7)]. Oral contraceptives containing ethinyl estradiol, which are also metabolized by CYP3A4, do not affect the pharmacokinetics of budesonide. Budesonide does not affect the plasma levels of oral contraceptives (i.e., ethinyl estradiol).

20231017

2

3 DOSAGE FORMS AND STRENGTHS Extended-release tablets: White, round, biconvex film-coated tablets imprinted with “ WPI ” and “ 2510 ” on one side and plain on the other. Each extended-release tablet contains 9 mg budesonide, USP. Extended-release tablets: 9 mg ( 3 )

Budesonide Budesonide MICROCRYSTALLINE CELLULOSE SILICON DIOXIDE HYDROXYPROPYL CELLULOSE (90000 WAMW) HYDROXYPROPYL CELLULOSE (110000 WAMW) HYPROMELLOSE 2910 (3 MPA.S) HYPROMELLOSE 2910 (6 MPA.S) FERROSOFERRIC OXIDE LACTOSE MONOHYDRATE MAGNESIUM STEARATE METHACRYLIC ACID - METHYL METHACRYLATE COPOLYMER (1:1) METHACRYLIC ACID - METHYL METHACRYLATE COPOLYMER (1:2) POLYETHYLENE GLYCOL 400 POLYSORBATE 80 PROPYLENE GLYCOL SODIUM STARCH GLYCOLATE TYPE A POTATO LECITHIN, SOYBEAN TALC TITANIUM DIOXIDE TRIETHYL CITRATE BUDESONIDE BUDESONIDE WPI;2510

13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility Carcinogenicity Carcinogenicity studies with budesonide were conducted in rats and mice. In a two-year study in Sprague-Dawley rats, budesonide caused a statistically significant increase in the incidence of gliomas in male rats at an oral dose of 50 mcg/kg (approximately 0.05 times the maximum recommended human dose on a body surface area basis). In addition, there were increased incidences of primary hepatocellular tumors in male rats at 25 mcg/kg (approximately 0.023 times the maximum recommended human dose on a body surface area basis) and above. No tumorigenicity was seen in female rats at oral doses up to 50 mcg/kg (approximately 0.05 times the maximum recommended human dose on a body surface area basis). In an additional two-year study in male Sprague-Dawley rats, budesonide caused no gliomas at an oral dose of 50 mcg/kg (approximately 0.05 times the maximum recommended human dose on a body surface area basis). However, it caused a statistically significant increase in the incidence of hepatocellular tumors at an oral dose of 50 mcg/kg (approximately 0.05 times the maximum recommended human dose on a body surface area basis). The concurrent reference glucocorticosteroids (prednisolone and triamcinolone acetonide) showed similar findings. In a 91-week study in mice, budesonide caused no treatment-related carcinogenicity at oral doses up to 200 mcg/kg (approximately 0.1 times the maximum recommended human dose on a body surface area basis). Mutagenesis Budesonide was not genotoxic in the Ames test, the mouse lymphoma cell forward gene mutation (TK +/- ) test, the human lymphocyte chromosome aberration test, the Drosophila melanogaster sex-linked recessive lethality test, the rat hepatocyte unscheduled DNA synthesis (UDS) test and the mouse micronucleus test. Impairment of Fertility In rats, budesonide had no effect on fertility at subcutaneous doses up to 80 mcg/kg (approximately 0.07 times the maximum recommended human dose on a body surface area basis). However, it caused a decrease in prenatal viability and viability in pups at birth and during lactation, along with a decrease in maternal body weight gain, at subcutaneous doses of 20 mcg/kg (approximately 0.02 times the maximum recommended human dose on a body surface area basis) and above. No such effects were noted at 5 mcg/kg (approximately 0.005 times the maximum recommended human dose on a body surface area basis).

13 NONCLINICAL TOXICOLOGY 13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility Carcinogenicity Carcinogenicity studies with budesonide were conducted in rats and mice. In a two-year study in Sprague-Dawley rats, budesonide caused a statistically significant increase in the incidence of gliomas in male rats at an oral dose of 50 mcg/kg (approximately 0.05 times the maximum recommended human dose on a body surface area basis). In addition, there were increased incidences of primary hepatocellular tumors in male rats at 25 mcg/kg (approximately 0.023 times the maximum recommended human dose on a body surface area basis) and above. No tumorigenicity was seen in female rats at oral doses up to 50 mcg/kg (approximately 0.05 times the maximum recommended human dose on a body surface area basis). In an additional two-year study in male Sprague-Dawley rats, budesonide caused no gliomas at an oral dose of 50 mcg/kg (approximately 0.05 times the maximum recommended human dose on a body surface area basis). However, it caused a statistically significant increase in the incidence of hepatocellular tumors at an oral dose of 50 mcg/kg (approximately 0.05 times the maximum recommended human dose on a body surface area basis). The concurrent reference glucocorticosteroids (prednisolone and triamcinolone acetonide) showed similar findings. In a 91-week study in mice, budesonide caused no treatment-related carcinogenicity at oral doses up to 200 mcg/kg (approximately 0.1 times the maximum recommended human dose on a body surface area basis). Mutagenesis Budesonide was not genotoxic in the Ames test, the mouse lymphoma cell forward gene mutation (TK +/- ) test, the human lymphocyte chromosome aberration test, the Drosophila melanogaster sex-linked recessive lethality test, the rat hepatocyte unscheduled DNA synthesis (UDS) test and the mouse micronucleus test. Impairment of Fertility In rats, budesonide had no effect on fertility at subcutaneous doses up to 80 mcg/kg (approximately 0.07 times the maximum recommended human dose on a body surface area basis). However, it caused a decrease in prenatal viability and viability in pups at birth and during lactation, along with a decrease in maternal body weight gain, at subcutaneous doses of 20 mcg/kg (approximately 0.02 times the maximum recommended human dose on a body surface area basis) and above. No such effects were noted at 5 mcg/kg (approximately 0.005 times the maximum recommended human dose on a body surface area basis).

ANDA205457

Budesonide

Budesonide

51407-824

HUMAN PRESCRIPTION DRUG

ORAL

Principal Display Panel NDC 51407-824-30 Budesonide Extended-Release Tablets 9 mg Swallow tablet whole, do not chew, crush, or break. 30 Tablets Rx Only 51407-824-30OL - Budesonide ER 9mg - Actavis - Rev. 1023.jpg

17 PATIENT COUNSELING INFORMATION Advise the patient to read the FDA-approved patient labeling (Patient Information). Patients being treated with budesonide extended-release tablets should receive the following information and instructions. This information is intended to aid the patient in the safe and effective use of budesonide extended-release tablets. Hypercorticism and Adrenal Suppression Patients should be advised that budesonide extended-release tablets may cause systemic glucocorticosteroid effects of hypercorticism and adrenal suppression. Patients should taper slowly from systemic corticosteroids if transferring to budesonide extended-release tablets [see Warnings and Precautions (5.1) and (5.2)] . Immunosuppression Patients who are on immunosuppressant doses of glucocorticosteroids should be warned to avoid exposure to chickenpox or measles and, if exposed, to consult their physician immediately. If exposure to such a person occurs, and the patient has not had chickenpox or been properly vaccinated, a physician should be consulted immediately. Patients should be informed of potential worsening of existing tuberculosis, fungal, bacterial, viral, or parasitic infections, or ocular herpes simplex [see Warnings and Precautions (5.3)] . How to Take Budesonide Extended-Release Tablets Budesonide extended-release tablets should be swallowed whole with water and NOT CHEWED, CRUSHED, OR BROKEN. Patients should be advised to avoid the consumption of grapefruit juice for the duration of their budesonide extended-release tablets therapy [see Dosage and Administration (2)] . Pregnancy Advise female patients that budesonide extended-release tablets may cause fetal harm and to inform their healthcare provider with a known or suspected pregnancy [see Use in Specific Populations (8.1)] . Manufactured by: Actavis Laboratories FL, Inc. Fort Lauderdale, FL 33314 USA Distributed by: Actavis Pharma, Inc. Parsippany, NJ 07054 USA Rev. A 6/2020 Marketed by: GSMS, Inc. Camarillo, CA USA 93012

14 CLINICAL STUDIES Induction of Remission in Active, Mild to Moderate Ulcerative Colitis Two similarly designed, randomized, double-blind, placebo-controlled studies were conducted in a total of 970 adult patients with active, mild to moderate ulcerative colitis (UC) which was defined as an Ulcerative Colitis Disease Activity Index (UCDAI of greater than or equal to 4 and less than or equal to 10). Eight hundred ninety-nine of these patients had histology consistent with active UC; this was considered the primary analysis population. UCDAI is a four-component scale (total score of 0 to 12) that encompasses the clinical assessments of stool frequency, rectal bleeding, mucosal appearance and physician's rating of disease activity (score of 0 to 3 for each of the components). The baseline median UCDAI score in both studies was 7. In Study 1, 56% of patients were male, and the median age was 42 years. In Study 2, 57% of patients were male, and the median age was 44 years. In Study 1, 50% of patients were Caucasian, 7% were African American, and 34% were Asian. In Study 2, more than 99% were Caucasian. Both studies compared budesonide extended-release tablets 9 mg and 6 mg with placebo and included an active reference arm (a mesalamine 2.4 g in Study 1 and a budesonide * 9 mg not approved for the treatment of UC in Study 2). The primary endpoint was induction of remission after 8 weeks of treatment. Remission was defined as a UCDAI score of less than or equal to 1, with subscores of 0 for rectal bleeding, stool frequency, and mucosal appearance and with a greater than or equal to 1 point reduction in an endoscopy-only score. 2 In both studies, budesonide extended-release tablets 9 mg demonstrated superiority to placebo in inducing remission (Table 4). Table 4. Induction of Remission in Studies 1 and 2 Treatment Group Study 1 n/N (%) Study 2 n/N (%) Budesonide Extended-Release Tablets 9 mg 22/123 (17.9) 19/109 (17.4) Budesonide Extended-Release Tablets 6 mg 16/121 (13.2) 9/109 (8.3) Reference arm* 15/124 (12.1) 13/103 (12.6) Placebo 9/121 (7.4) 4/89 (4.5) Treatment difference between Budesonide Extended-Release Tablets 9 mg and placebo (95% CI) † 10.4% (2.2%, 18.7%) 12.9% (4.6%, 21.3%) Remission is defined as a UCDAI score of less than or equal to 1, with subscores of 0 for rectal bleeding, stool frequency, and mucosal appearance and with a greater than or equal to 1 point reduction in an endoscopy-only score. 2 The primary analysis population included only patients that had histology consistent with active UC. CI=Confidence Interval * The reference arm in Study 1 is a delayed release mesalamine 2.4 g; the reference arm in Study 2 is a budesonide 9 mg not approved for the treatment of UC. † p<0.025 for budesonide extended-release tablets 9 mg vs. placebo in both Studies 1 and 2 based on the Chi-square test (alpha = 0.025)

15 REFERENCES 1. Rachmilewitz D. Coated mesalazine (5-aminosalicylic acid) versus sulphasalazine in the treatment of active ulcerative colitis: a randomised trial. BMJ . 1989;298:82-6.

8.5 Geriatric Use Clinical studies of budesonide extended-release tablets did not include sufficient numbers of subjects aged 65 and over to determine whether they respond differently from younger subjects. Other reported clinical experience has not identified differences in responses between the elderly and younger patients. In general, budesonide extended-release tablets should be used cautiously in elderly patients due to the potential for decreased hepatic, renal, or cardiac function, and of concomitant disease or other drug therapy.

8.4 Pediatric Use Safety and effectiveness of budesonide extended-release tablets in pediatric patients have not been established. Glucocorticosteroids, such as budesonide extended-release tablets, may cause a reduction of growth velocity in pediatric patients.

8.1 Pregnancy Risk Summary Limited published studies report on the use of budesonide in pregnant women; however, the data are insufficient to inform a drug-associated risk for major birth defects and miscarriage. There are clinical considerations (see Clinical Considerations). In animal reproduction studies with pregnant rats and rabbits, subcutaneous administration of budesonide during organogenesis at doses 0.5 times and 0.05 times, respectively, the maximum recommended human dose, resulted in increased fetal loss, decreased pup weights, and skeletal abnormalities. Maternal toxicity was observed in both rats and rabbits at these dose levels ( see Data ). Based on animal data, advise pregnant women of the potential risk to a fetus. The estimated background risk of major birth defects and miscarriage of the indicated population is unknown. All pregnancies have a background risk of birth defect, loss, or other adverse outcomes. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2% to 4%, and 15% to 20%, respectively. Clinical Considerations Disease-Associated Maternal and/or Embryo/Fetal Risk Published data suggest that increased disease activity is associated with the risk of developing adverse pregnancy outcomes in women with ulcerative colitis. Adverse pregnancy outcomes include preterm delivery (before 37 weeks of gestation), low birth weight (less than 2500 g) infants, and small for gestational age at birth. Fetal/Neonatal Adverse Reactions Hypoadrenalism may occur in infants born of mothers receiving corticosteroids during pregnancy. Infants should be carefully observed for signs of hypoadrenalism, such as poor feeding, irritability, weakness, and vomiting, and managed accordingly [see Warnings and Precautions ( 5.1 )] . Data Animal Data Budesonide was teratogenic and embryolethal in rabbits and rats. In an embryo-fetal development study in pregnant rats dosed subcutaneously with budesonide during the period of organogenesis from gestation days 6 to 15 there were effects on fetal development and survival at subcutaneous doses up to approximately 500 mcg/kg in rats (approximately 0.5 times the maximum recommended human dose on a body surface area basis). In an embryo-fetal development study in pregnant rabbits dosed during the period of organogenesis from gestation days 6 to 18, there was an increase in maternal abortion, and effects on fetal development and reduction in litter weights at subcutaneous doses up to approximately 25 mcg/kg in rabbits (approximately 0.05 times the maximum recommended human dose on a body surface area basis). Maternal toxicity, including reduction in body weight gain, was observed at subcutaneous doses of 5 mcg/kg in rabbits (approximately 0.01 times the maximum recommended human dose on a body surface area basis) and 500 mcg/kg in rats (approximately 0.5 times the maximum recommended human dose on a body surface area basis). In a peri-and post-natal development study, rats dosed subcutaneously with budesonide during the period of Day 15 post coitum to Day 21 postpartum, budesonide had no effects on delivery but did have an effect on growth and development of offspring. In addition, offspring survival was reduced, and surviving offspring had decreased mean body weights at birth and during lactation at exposures 0.02 times the MRHD (on a mg/m 2 basis at maternal subcutaneous doses of 20 mcg/kg/day and higher). These findings occurred in the presence of maternal toxicity.

8 USE IN SPECIFIC POPULATIONS Pregnancy: Based on animal data, may cause fetal harm. ( 8.1 ) Hepatic Impairment: Monitor patients for signs and/or symptoms of hypercorticism. ( 5.4 , 8.6 ) 8.1 Pregnancy Risk Summary Limited published studies report on the use of budesonide in pregnant women; however, the data are insufficient to inform a drug-associated risk for major birth defects and miscarriage. There are clinical considerations (see Clinical Considerations). In animal reproduction studies with pregnant rats and rabbits, subcutaneous administration of budesonide during organogenesis at doses 0.5 times and 0.05 times, respectively, the maximum recommended human dose, resulted in increased fetal loss, decreased pup weights, and skeletal abnormalities. Maternal toxicity was observed in both rats and rabbits at these dose levels ( see Data ). Based on animal data, advise pregnant women of the potential risk to a fetus. The estimated background risk of major birth defects and miscarriage of the indicated population is unknown. All pregnancies have a background risk of birth defect, loss, or other adverse outcomes. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2% to 4%, and 15% to 20%, respectively. Clinical Considerations Disease-Associated Maternal and/or Embryo/Fetal Risk Published data suggest that increased disease activity is associated with the risk of developing adverse pregnancy outcomes in women with ulcerative colitis. Adverse pregnancy outcomes include preterm delivery (before 37 weeks of gestation), low birth weight (less than 2500 g) infants, and small for gestational age at birth. Fetal/Neonatal Adverse Reactions Hypoadrenalism may occur in infants born of mothers receiving corticosteroids during pregnancy. Infants should be carefully observed for signs of hypoadrenalism, such as poor feeding, irritability, weakness, and vomiting, and managed accordingly [see Warnings and Precautions ( 5.1 )] . Data Animal Data Budesonide was teratogenic and embryolethal in rabbits and rats. In an embryo-fetal development study in pregnant rats dosed subcutaneously with budesonide during the period of organogenesis from gestation days 6 to 15 there were effects on fetal development and survival at subcutaneous doses up to approximately 500 mcg/kg in rats (approximately 0.5 times the maximum recommended human dose on a body surface area basis). In an embryo-fetal development study in pregnant rabbits dosed during the period of organogenesis from gestation days 6 to 18, there was an increase in maternal abortion, and effects on fetal development and reduction in litter weights at subcutaneous doses up to approximately 25 mcg/kg in rabbits (approximately 0.05 times the maximum recommended human dose on a body surface area basis). Maternal toxicity, including reduction in body weight gain, was observed at subcutaneous doses of 5 mcg/kg in rabbits (approximately 0.01 times the maximum recommended human dose on a body surface area basis) and 500 mcg/kg in rats (approximately 0.5 times the maximum recommended human dose on a body surface area basis). In a peri-and post-natal development study, rats dosed subcutaneously with budesonide during the period of Day 15 post coitum to Day 21 postpartum, budesonide had no effects on delivery but did have an effect on growth and development of offspring. In addition, offspring survival was reduced, and surviving offspring had decreased mean body weights at birth and during lactation at exposures 0.02 times the MRHD (on a mg/m 2 basis at maternal subcutaneous doses of 20 mcg/kg/day and higher). These findings occurred in the presence of maternal toxicity. 8.2 Lactation Risk Summary Lactation studies have not been conducted with budesonide extended-release tablets or other oral budesonide products and no information is available on the effects of budesonide on the breastfed infant or the effects of the drug on milk production. One published study reports that budesonide is present in human milk following maternal inhalation of budesonide (see Data) . The developmental and health benefits of breastfeeding should be considered along with the mother’s clinical need for budesonide extended-release tablets and any potential adverse effects on the breastfed infant from budesonide extended-release tablets, or from the underlying maternal condition. Data One published study reports that budesonide is present in human milk following maternal inhalation of budesonide which resulted in infant doses approximately 0.3% to 1% of the maternal weight-adjusted dosage and a milk/plasma ratio ranging between 0.4 and 0.5. Budesonide plasma concentrations were not detected, and no adverse events were noted in the breastfed infants following maternal use of inhaled budesonide. The recommended daily dose of budesonide extended-release tablets are higher (9 mg daily) compared with inhaled budesonide (up to 800 mcg daily) given to mothers in the above described study. The maximum budesonide plasma concentration following a 9 mg daily dose (in both single-and repeated-dose pharmacokinetic studies) of oral budesonide is approximately 5 to 10 nmol/L which is up to 10 times higher than the 1 to 2 nmol/L for a 800 mcg daily dose of inhaled budesonide at steady state in the above inhalation study. Assuming the coefficient of extrapolation between the inhaled and oral doses is constant across all dose levels, at therapeutic doses of budesonide extended-release tablets, budesonide exposure to the nursing child may be up to 10 times higher than that by budesonide inhalation. 8.4 Pediatric Use Safety and effectiveness of budesonide extended-release tablets in pediatric patients have not been established. Glucocorticosteroids, such as budesonide extended-release tablets, may cause a reduction of growth velocity in pediatric patients. 8.5 Geriatric Use Clinical studies of budesonide extended-release tablets did not include sufficient numbers of subjects aged 65 and over to determine whether they respond differently from younger subjects. Other reported clinical experience has not identified differences in responses between the elderly and younger patients. In general, budesonide extended-release tablets should be used cautiously in elderly patients due to the potential for decreased hepatic, renal, or cardiac function, and of concomitant disease or other drug therapy. 8.6 Hepatic Impairment Patients with moderate to severe liver disease should be monitored for increased signs and/or symptoms of hypercorticism. Discontinuing the use of budesonide extended-release tablets should be considered in these patients [see Warnings and Precautions (5.4) ].

16 HOW SUPPLIED/STORAGE AND HANDLING Budesonide extended-release tablets 9 mg, are white, round, biconvex, film-coated tablets imprinted with “ WPI ” and “ 2510 ” on one side and plain on the other. Tablets are supplied in bottles of 30, NDC 51407-824-30. Store at 20° to 25°C (68° to 77°F) [see USP Controlled Room Temperature]. Keep container tightly closed. Protect from light and moisture.