Pravastatin

12.1 Mechanism of Action Pravastatin is a reversible inhibitor of 3-hydroxy-3-methylglutaryl-coenzyme A (HMG-CoA) reductase, the enzyme that catalyzes the conversion of HMG-CoA to mevalonate, an early and rate limiting step in the biosynthetic pathway for cholesterol. In addition, pravastatin reduces VLDL and TG and increases HDL-C.

1 INDICATIONS AND USAGE Therapy with lipid-altering agents should be only one component of multiple risk factor intervention in individuals at significantly increased risk for atherosclerotic vascular disease due to hypercholesterolemia. Drug therapy is indicated as an adjunct to diet when the response to a diet restricted in saturated fat and cholesterol and other nonpharmacologic measures alone has been inadequate. Pravastatin Sodium is an HMG-CoA reductase inhibitor (statin) indicated as an adjunctive therapy to diet to: Reduce the risk of MI, revascularization, and cardiovascular mortality in hypercholesterolemic patients without clinically evident CHD. (1.1) Reduce the risk of total mortality by reducing coronary death, MI, revascularization, stroke/TIA, and the progression of coronary atherosclerosis in patients with clinically evident CHD. (1.1) Reduce elevated Total-C, LDL-C, ApoB, and TG levels and to increase HDL­ C in patients with primary hypercholesterolemia and mixed dyslipidemia. (1.2) Reduce elevated serum TG levels in patients with hypertriglyceridemia. (1.2) Treat patients with primary dysbetalipoproteinemia who are not responding to diet. (1.2) Treat children and adolescent patients ages 8 years and older with heterozygous familial hypercholesterolemia after failing an adequate trial of diet therapy. (1.2) Limitations of use: Pravastatin sodium has not been studied in Fredrickson Types I and V dyslipidemias. (1.3) 1.1 Prevention of Cardiovascular Disease In hypercholesterolemic patients without clinically evident coronary heart disease (CHD), Pravastatin Sodium is indicated to: reduce the risk of myocardial infarction (MI). reduce the risk of undergoing myocardial revascularization procedures. reduce the risk of cardiovascular mortality with no increase in death from non-cardiovascular causes. In patients with clinically evident CHD, Pravastatin Sodium is indicated to: reduce the risk of total mortality by reducing coronary death. reduce the risk

2 DOSAGE AND ADMINISTRATION Adults: the recommended starting dose is 40 mg once daily. Use 80 mg dose only for patients not reaching LDL-C goal with 40 mg. (2.2) Significant renal impairment: the recommended starting dose is pravastatin 10 mg once daily. (2.3) Children (ages 8 to 13 years, inclusive): the recommended starting dose is 20 mg once daily. (2.4) Adolescents (ages 14 to 18 years): the recommended starting dose is 40 mg once daily. (2.4) 2.1 General Dosing Information The patient should be placed on a standard cholesterol-lowering diet before receiving Pravastatin Sodium and should continue on this diet during treatment with Pravastatin Sodium [see NCEP Treatment Guidelines for details on dietary therapy]. 2.2 Adult Patients The recommended starting dose is 40 mg once daily. If a daily dose of 40 mg does not achieve desired cholesterol levels, 80 mg once daily is recommended. Pravastatin Sodium can be administered orally as a single dose at any time of the day, with or without food. Since the maximal effect of a given dose is seen within 4 weeks, periodic lipid determinations should be performed at this time and dosage adjusted according to the patient’s response to therapy and established treatment guidelines. 2.3 Patients with Renal Impairment In patients with severe renal impairment, a starting dose of 10 mg pravastatin daily is recommended. 2.4 Pediatric Patients Children (Ages 8 to 13 Years, Inclusive) The recommended dose is 20 mg once daily in children 8 to 13 years of age. Doses greater than 20 mg have not been studied in this patient population. Adolescents (Ages 14 to 18 Years) The recommended starting dose is 40 mg once daily in adolescents 14 to 18 years of age. Doses greater than 40 mg have not been studied in this patient population. Children and adolescents treated with pravastatin should be reevaluated in adulthood and appropriate changes made to their cholesterol-lowering regimen to achieve adult goals for LDL-C [see Indications and Usage (1.2) ]. 2.5 Concomitant Lipid-Altering Therapy Pravastatin Sodium may be used with bile acid resins. When administering a bile-acid-binding resin (e.g., cholestyramine, colestipol) and pravastatin, Pravastatin Sodium should be given either 1 hour or more before or at least 4 hours following the resin. [See Clinical Pharmacology (12.3) ] 2.6 Dosage in Patients Taking Cyclosporine In patients taking immunosuppressive drugs such as cyclosporine concomitantly with pravastatin, therapy should begin with 10 mg of pravastatin sodium once-a-day at bedtime and titration to higher doses should be done with caution. Most patients treated with this combination received a maximum pravastatin sodium dose of 20 mg/day. In patients taking cyclosporine, therapy should be limited to 20 mg of pravastatin sodium once daily [see Warnings and Precautions (5.1) and Drug Interactions (7.1) ]. 2.7 Dosage in Patients Taking Clarithromycin In patients taking clarithromycin, therapy should be limited to 40 mg of pravastatin sodium once daily [see Drug Interactions (7.2) ].

6 ADVERSE REACTIONS Pravastatin is generally well tolerated; adverse reactions have usually been mild and transient. In 4-month-long placebo-controlled trials, 1.7% of pravastatin-treated patients and 1.2% of placebo-treated patients were discontinued from treatment because of adverse experiences attributed to study drug therapy; this difference was not statistically significant. In short-term clinical trials, the most commonly reported adverse reactions (≥2% and > placebo) regardless of causality were: musculoskeletal pain, nausea/vomiting, upper respiratory infection, diarrhea, and headache. (6.1) To report SUSPECTED ADVERSE REACTIONS, contact Biocon Pharma Inc. at 1-866-924-6266 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. 6.1 Adverse Clinical Events Short-Term Controlled Trials In the Pravastatin Sodium placebo-controlled clinical trials database of 1313 patients (age range 20-76 years, 32.4% women, 93.5% Caucasians, 5% Blacks, 0.9% Hispanics, 0.4% Asians, 0.2% Others) with a median treatment duration of 14 weeks, 3.3% of patients on Pravastatin Sodium and 1.2% patients on placebo discontinued due to adverse events regardless of causality. The most common adverse reactions that led to treatment discontinuation and occurred at an incidence greater than placebo were: liver function test increased, nausea, anxiety/depression, and dizziness. All adverse clinical events (regardless of causality) reported in ≥2% of pravastatin-treated patients in placebo-controlled trials of up to 8 months duration are identified in Table 1: Table 1: Adverse Events in ≥2% of Patients Treated with Pravastatin 5 to 40 mg and at an Incidence Greater Than Placebo in Short-Term Placebo-Controlled Trials (% of patients) Body System/Event 5 mg N=100 10 mg N=153 20 mg N=478 40 mg N=171 Any Dose N=902 Placebo N=411 Cardiovascular Angina Pectoris 5.0 4.6 4.8 3.5 4.5 3.4 Dermatologic Rash 3.0 2.6 6.7 1.2 4.5 1.4 Gastrointestinal Nausea/Vomiting Diarrhea Flatulence Dyspepsia/Heartburn Abdominal Distension 4.0 8.0 2.0 0.0 2.0 5.9 8.5 3.3 3.3 3.3 10.5 6.5 4.6 3.6 2.1 2.3 4.7 0.0 0.6 0.6 7.4 6.7 3.2 2.5 2.0 7.1 5.6 4.4 2.7 2.4 General Fatigue Chest Pain Influenza 4.0 4.0 4.0 1.3 1.3 2.6 5.2 3.3 1.9 0.0 1.2 0.6 3.4 2.7 2.0 3.9 1.9 0.7 Musculoskeletal Musculoskeletal Pain Myalgia 13.0 1.0 3.9 2.6 13.2 2.9 5.3 1.2 10.1 2.3 10.2 1.2 Nervous System Headache Dizziness 5.0 4.0 6.5 1.3 7.5 5.2 3.5 0.6 6.3 3.5 4.6 3.4 Respiratory Pharyngitis Upper Respiratory Infection Rhinitis Cough 2.0 6.0 7.0 4.0 4.6 9.8 5.2 1.3 1.5 5.2 3.8 3.1 1.2 4.1 1.2 1.2 2.0 5.9 3.9 2.5 2.7 5.8 4.9 1.7 Investigation ALT Increased g-GT Increased CPK Increased 2.0 3.0 5.0 2.0 2.6 1.3 4.0 2.1 5.2 1.2 0.6 2.9 2.9 2.0 4.1 1.2 1.2 3.6 The safety and tolerability of Pravastatin Sodium at a dose of 80 mg in 2 controlled trials with a mean exposure of 8.6 months was similar to that of Pravastatin Sodium at lower doses except that 4 out of 464 patients taking 80 mg of pravastatin had a single elevation of CK >10 times ULN compared to 0 out of 115 patients taking 40 mg of pravastatin. Long-Term Controlled Morbidity and Mortality Trials In the Pravastatin Sodium placebo-controlled clinical trials database of 21,483 patients (age range 24-75 years, 10.3% women, 52.3% Caucasians, 0.8% Blacks, 0.5% Hispanics, 0.1% Asians, 0.1% Others, 46.1% Not Recorded) with a median treatment duration of 261 weeks, 8.1% of patients on Pravastatin Sodium and 9.3% patients on placebo discontinued due to adverse events regardless of causality. Adverse event data were pooled from 7 double-blind, placebo-controlled trials (West of Scotland Coronary Prevention Study [WOS]; Cholesterol and Recurrent Events study [CARE]; Long-term Intervention with Pravastatin in Ischemic Disease study [LIPID]; Pravastatin Limitation of Atherosclerosis in the Coronary Arteries study [PLAC I]; Pravastatin, Lipids and Atherosclerosis in the Carotids study [PLAC II]; Regression Growth Evaluation Statin Study [REGRESS]; and Kuopio Atherosclerosis Prevention Study [KAPS]) involving a total of 10,764 patients treated with pravastatin 40 mg and 10,719 patients treated with placebo. The safety and tolerability profile in the pravastatin group was comparable to that of the placebo group. Patients were exposed to pravastatin for a mean of 4.0 to 5.1 years in WOS, CARE, and LIPID and 1.9 to 2.9 years in PLAC I, PLAC II, KAPS, and REGRESS. In these long-term trials, the most common reasons for discontinuation were mild, non-specific gastrointestinal complaints. Collectively, these 7 trials represent 47,613 patient-years of exposure to pravastatin. All clinical adverse events (regardless of causality) occurring in ≥2% of patients treated with pravastatin in these studies are identified in Table 2. Table 2: Adverse Events in ≥2% of Patients Treated with Pravastatin 40 mg and at an Incidence Greater Than Placebo in Long-Term Placebo- Controlled Trials Body System/Event Pravastatin (N=10,764) % of patients Placebo (N=10,719) % of patients

7 DRUG INTERACTIONS For the concurrent therapy of either cyclosporine, fibrates, niacin (nicotinic acid), or erythromycin, the risk of myopathy increases [see Warnings and Precautions (5.1) and Clinical Pharmacology (12.3) ]. Concomitant lipid-lowering therapies: use with fibrates or lipid-modifying doses (≥1 g/day) of niacin increases the risk of adverse skeletal muscle effects. Caution should be used when prescribing with Pravastatin Sodium. (7) Cyclosporine: combination increases exposure. Limit pravastatin to 20 mg once daily. (2.6, 7.1) Clarithromycin: combination increases exposure. Limit pravastatin to 40 mg once daily. (2.7, 7.2) 7.1 Cyclosporine The risk of myopathy/rhabdomyolysis is increased with concomitant administration of cyclosporine. Limit pravastatin to 20 mg once daily for concomitant use with cyclosporine [see Dosage and Administration (2.6) , Warnings and Precautions (5.1) , and Clinical Pharmacology (12.3) ]. 7.2 Clarithromycin and Other Macrolide Antibiotics The risk of myopathy/rhabdomyolysis is increased with concomitant administration of clarithromycin. Limit pravastatin to 40 mg once daily for concomitant use with clarithromycin [see Dosage and Administration (2.7) , Warnings and Precautions (5.1) , and Clinical Pharmacology (12.3) ]. Other macrolides (e.g., erythromycin and azithromycin) have the potential to increase statin exposures while used in combination. Pravastatin should be used cautiously with macrolide antibiotics due to a potential increased risk of myopathies. 7.3 Colchicine The risk of myopathy/rhabdomyolysis is increased with concomitant administration of colchicine [see Warnings and Precautions (5.1) ]. 7.4 Gemfibrozil Due to an increased risk of myopathy/rhabdomyolysis when HMG-CoA reductase inhibitors are coadministered with gemfibrozil, concomitant administration of Pravastatin Sodium with gemfibrozil should be avoided [see Warnings and Precautions (5.1) ]. 7.5 Other Fibrates Because it is known that the risk of myopathy during treatment with HMG-CoA reductase inhibitors is increased with concurrent administration of other fibrates, Pravastatin Sodium should be administered with caution when used concomitantly with other fibrates [see Warnings and Precautions (5.1) ]. 7.6 Niacin The risk of skeletal muscle effects may be enhanced when pravastatin is used in combination with niacin; a reduction in Pravastatin Sodium dosage should be considered in this setting [see Warnings and Precautions (5.1) ].