ATORVASTATIN CALCIUM

7 DRUG INTERACTIONS The risk of myopathy during treatment with statins is increased with concurrent administration of fibric acid derivatives, lipid-modifying doses of niacin, cyclosporine, or strong CYP 3A4 inhibitors (e.g., clarithromycin, HIV protease inhibitors, and itraconazole) [ see Warnings and Precautions ( 5.1 ) and Clinical Pharmacology ( 12.3 ) ]. Drug Interactions Associated with Increased Risk of Myopathy/Rhabdomyolysis ( 2.6 , 5.1 , 7 , 12.3 ) Interacting Agents Prescribing Recommendations Cyclosporine, HIV protease inhibitors (tipranavir plus ritonavir), hepatitis C protease inhibitor (telaprevir) Avoid atorvastatin HIV protease inhibitor (lopinavir plus ritonavir) Use with caution and lowest dose necessary Clarithromycin, itraconazole, HIV protease inhibitors (saquinavir plus ritonavir, darunavir plus ritonavir, fosamprenavir, fosamprenavir plus ritonavir) Do not exceed 20 mg atorvastatin daily HIV protease inhibitor (nelfinavir) Hepatitis C protease inhibitor (boceprevir) Do not exceed 40 mg atorvastatin daily • Other Lipid-Lowering Medications: Use with fibrate products or lipid-modifying doses (≥ 1 g/day) of niacin increases the risk of adverse skeletal muscle effects. Caution should be used when prescribing with atorvastatin calcium ( 7 ). • Digoxin: Patients should be monitored appropriately ( 7.8 ). • Oral Contraceptives: Values for norethindrone and ethinyl estradiol may be increased ( 7.9 ). • Rifampin should be simultaneously coadministered with atorvastatin calcium ( 7.7 ). 7.1 Strong Inhibitors of CYP 3A4 Atorvastatin calcium is metabolized by cytochrome P450 3A4. Concomitant administration of atorvastatin calcium with strong inhibitors of CYP 3A4 can lead to increases in plasma concentrations of atorvastatin. The extent of interaction and potentiation of effects depend on the variability of effect on CYP 3A4. Clarithromycin Atorvastatin AUC was significantly increased with concomitant administration of atorvastatin 80 mg with clarithromycin (500 mg twice daily) compared to that of atorvastatin calcium alone [ see Clinical Pharmacology ( 12.3 ) ]. Therefore, in patients taking clarithromycin, caution should be used when the atorvastatin dose exceeds 20 mg [ see Dosage and Administration ( 2.6 ) and Warnings and Precautions ( 5.1 ) ]. Combination of Protease Inhibitors Atorvastatin AUC was significantly increased with concomitant administration of atorvastatin calcium with several combinations of HIV protease inhibitors, as well as with the hepatitis C protease inhibitor telaprevir, compared to that of atorvastatin calcium alone [ see Clinical Pharmacology ( 12.3 ) ]. Therefore, in patients taking the HIV protease inhibitor tipranavir plus ritonavir, or the hepatitis C protease inhibitor telaprevir, concomitant use of atorvastatin calcium should be avoided. In patients taking the HIV protease inhibitor lopinavir plus ritonavir, caution should be used when prescribing atorvastatin calcium and the lowest dose necessary should be used. In patients taking the HIV protease inhibitors saquinavir plus ritonavir, darunavir plus ritonavir, fosamprenavir, or fosamprenavir plus ritonavir, the dose of atorvastatin should not exceed 20 mg and should be used with caution [ see Dosage and Administration ( 2.6 ) and Warnings and Precautions ( 5.1 ) ]. In patients taking the HIV protease inhibitor nelfinavir or the hepatitis C protease inhibitor boceprevir, the dose of atorvastatin should not exceed 40 mg and close clinical monitoring is recommended. Itraconazole Atorvastatin AUC was significantly increased with concomitant administration of atorvastatin 40 mg and itraconazole 200 mg [ see Clinical Pharmacology ( 12.3 ) ]. Therefore, in patients taking itraconazole, caution should be used when the atorvastatin dose exceeds 20 mg [ see Dosage and Administration ( 2.6 ) and Warnings and Precautions ( 5.1 ) ]. 7.2 Grapefruit Juice Contains one or more components that inhibit CYP 3A4 and can increase plasma concentrations of atorvastatin, especially with excessive grapefruit juice consumption (> 1.2 liters per day). 7.3 Cyclosporine Atorvastatin and atorvastatin-metabolites are substrates of the OATP1B1 transporter. Inhibitors of the OATP1B1 (e.g., cyclosporine) can increase the bioavailability of atorvastatin. Atorvastatin AUC was significantly increased with concomitant administration of atorvastatin 10 mg and cyclosporine 5.2 mg/kg/day compared to that of atorvastatin calcium alone [ see Clinical Pharmacology ( 12.3 ) ]. The coadministration of atorvastatin calcium with cyclosporine should be avoided [ 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 atorvastatin calcium 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, atorvastatin calcium 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 atorvastatin calcium is used in combination with niacin; a reduction in atorvastatin calcium dosage should be considered in this setting [ see Warnings and Precautions ( 5.1 ) ]. 7.7 Rifampin or Other Inducers of Cytochrome P450 3A4 Concomitant administration of atorvastatin calcium with inducers of cytochrome P450 3A4 (e.g., efavirenz, rifampin) can lead to variable reductions in plasma concentrations of atorvastatin. Due to the dual interaction mechanism of rifampin, simultaneous coadministration of atorvastatin calcium with rifampin is recommended, as delayed administration of atorvastatin calcium after administration of rifampin has been associated with a significant reduction in atorvastatin plasma concentrations. 7.8 Digoxin When multiple doses of atorvastatin calcium and digoxin were coadministered, steady state plasma digoxin concentrations increased by approximately 20%. Patients taking digoxin should be monitored appropriately. 7.9 Oral Contraceptives Coadministration of atorvastatin calcium and an oral contraceptive increased AUC values for norethindrone and ethinyl estradiol [ see Clinical Pharmacology ( 12.3 ) ]. These increases should be considered when selecting an oral contraceptive for a woman taking atorvastatin calcium. 7.10 Warfarin Atorvastatin calcium had no clinically significant effect on prothrombin time when administered to patients receiving chronic warfarin treatment. 7.11 Colchicine Cases of myopathy, including rhabdomyolysis, have been reported with atorvastatin coadministered with colchicine, and caution should be exercised when prescribing atorvastatin with colchicine.

1 INDICATIONS AND USAGE Atorvastatin calcium tablets is indicated: To reduce the risk of: Myocardial infarction (MI), stroke, revascularization procedures, and angina in adults with multiple risk factors for coronary heart disease (CHD) but without clinically evident CHD MI and stroke in adults with type 2 diabetes mellitus with multiple risk factors for CHD but without clinically evident CHD Non-fatal MI, fatal and non-fatal stroke, revascularization procedures, hospitalization for congestive heart failure, and angina in adults with clinically evident CHD As an adjunct to diet to reduce low-density lipoprotein cholesterol (LDL-C) in: Adults with primary hyperlipidemia. Adults and pediatric patients aged 10 years and older with heterozygous familial hypercholesterolemia (HeFH). As an adjunct to other LDL-C-lowering therapies, or alone if such treatments are unavailable, to reduce LDL-C in adults and pediatric patients aged 10 years and older with homozygous familial hypercholesterolemia (HoFH). As an adjunct to diet for the treatment of adults with: Primary dysbetalipoproteinemia Hypertriglyceridemia Atorvastatin calcium tablets is an HMG-CoA reductase inhibitor (statin) indicated: To reduce the risk of: Myocardial infarction (MI), stroke, revascularization procedures, and angina in adults with multiple risk factors for coronary heart disease (CHD) but without clinically evident CHD. MI and stroke in adults with type 2 diabetes mellitus with multiple risk factors for CHD but without clinically evident CHD. Non-fatal MI, fatal and non-fatal stroke, revascularization procedures, hospitalization for congestive heart failure, and angina in adults with clinically evident CHD. As an adjunct to diet to reduce low-density lipoprotein (LDL-C) in: Adults with primary hyperlipidemia. Adults and pediatric patients aged 10 years and older with heterozygous familial hypercholesterolemia (HeFH) As an adjunct to other LDL-C-lowering therapies to reduce LDL-C in adults and pediatric patients aged 10 years and older with homozygous familial hypercholesterolemia. As an adjunct to diet for the treatment of adults with: Primary dysbetaliproteinemia. Hypertriglyceridemia.

2 DOSAGE AND ADMINISTRATION • Dose range: 10 to 80 mg once daily ( 2.1 ). • Recommended start dose: 10 or 20 mg once daily ( 2.1 ). • Patients requiring large LDL-C reduction (> 45%) may start at 40 mg once daily ( 2.1 ). • Pediatric patients with HeFH: starting dose: 10 mg once daily; dose range: 10 to 20 mg/day for patients 10 years to 17 years of age ( 2.2 ). 2.1 Hyperlipidemia and Mixed Dyslipidemia The recommended starting dose of atorvastatin calcium tablets is 10 or 20 mg once daily. Patients who require a large reduction in LDL-C (more than 45%) may be started at 40 mg once daily. The dosage range of atorvastatin calcium tablets is 10 to 80 mg once daily. Atorvastatin calcium tablets can be administered as a single dose at any time of the day, with or without food. The starting dose and maintenance doses of atorvastatin calcium tablets should be individualized according to patient characteristics such as goal of therapy and response. After initiation and/or upon titration of atorvastatin calcium tablets, lipid levels should be analyzed within 2 to 4 weeks and dosage adjusted accordingly. 2.2 Heterozygous Familial Hypercholesterolemia in Pediatric Patients (10 Years to 17 Years of Age) The recommended starting dose of atorvastatin calcium tablets is 10 mg/day; the usual dose range is 10 to 20 mg orally once daily [see Clinical Studies ( 14.6 )] . Doses should be individualized according to the recommended goal of therapy [ see Indications and Usage ( 1.2 ) and Clinical Pharmacology ( 12 ) ]. Adjustments should be made at intervals of 4 weeks or more. 2.3 Homozygous Familial Hypercholesterolemia The dosage of atorvastatin calcium tablets in patients with HoFH is 10 to 80 mg daily. Atorvastatin calcium tablets should be used as an adjunct to other lipid-lowering treatments (e.g., LDL apheresis) in these patients or if such treatments are unavailable. 2.4 Concomitant Lipid-Lowering Therapy Atorvastatin calcium tablets may be used with bile acid resins. The combination of HMG-CoA reductase inhibitors (statins) and fibrates should generally be used with caution [ see Warnings and Precautions ( 5.1 ) and Drug Interactions ( 7 ) ]. 2.5 Dosage in Patients with Renal Impairment Renal disease does not affect the plasma concentrations nor LDL-C reduction of atorvastatin calcium; thus, dosage adjustment in patients with renal dysfunction is not necessary [ see Warnings and Precautions ( 5.1 ) and Clinical Pharmacology ( 12.3 ) ]. 2.6 Dosage in Patients Taking Cyclosporine, Clarithromycin, Itraconazole, or Certain Protease Inhibitors In patients taking cyclosporine or the HIV protease inhibitors (tipranavir plus ritonavir) or the hepatitis C protease inhibitor (telaprevir), therapy with atorvastatin calcium tablets should be avoided. In patients with HIV taking lopinavir plus ritonavir, caution should be used when prescribing atorvastatin calcium tablets and the lowest dose necessary employed. In patients taking clarithromycin, itraconazole, or in patients with HIV taking a combination of saquinavir plus ritonavir, darunavir plus ritonavir, fosamprenavir, or fosamprenavir plus ritonavir, therapy with atorvastatin calcium tablets should be limited to 20 mg, and appropriate clinical assessment is recommended to ensure that the lowest dose necessary of atorvastatin calcium tablets is employed. In patients taking the HIV protease inhibitor nelfinavir or the hepatitis C protease inhibitor boceprevir, therapy with atorvastatin calcium tablets should be limited to 40 mg, and appropriate clinical assessment is recommended to ensure that the lowest dose necessary of atorvastatin calcium tablets is employed [ see Warnings and Precautions ( 5.1 ) and Drug Interactions ( 7 ) ].

6 ADVERSE REACTIONS The following important adverse reactions are described below and elsewhere in the labeling: Myopathy and Rhabdomyolysis [see Warnings and Precautions ( 5.1 )] Immune-Mediated Necrotizing Myopathy [see Warnings and Precautions ( 5.2 )] Hepatic Dysfunction [see Warnings and Precautions ( 5.3 )] Increases in HbA1c and Fasting Serum Glucose Levels [see Warnings and Precautions ( 5.4 )] Most common adverse reactions (incidence ≥5%) are nasopharyngitis, arthralgia, diarrhea, pain in extremity, and urinary tract infection ( 6.1 ). To report SUSPECTED ADVERSE REACTIONS, contact Nivagen Pharmaceuticals, Inc. at 1-877-977-0687 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, the 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. In the atorvastatin calcium tablets placebo-controlled clinical trial database of 16,066 patients (8755 atorvastatin calcium tablets vs. 7,311 placebo; age range 10–93 years, 39% women, 91% White, 3% Black or African American, 2% Asian, 4% other) with a median treatment duration of 53 weeks, The most common adverse reactions in patients treated with atorvastatin calcium tablets that led to treatment discontinuation and occurred at a rate greater than placebo were: myalgia (0.7%), diarrhea (0.5%), nausea (0.4%), alanine aminotransferase increase (0.4%), and hepatic enzyme increase (0.4%). Table 1 summarizes adverse reactions reported in ≥ 2% and at a rate greater than placebo in patients treated with atorvastatin calcium tablets (n=8,755), from seventeen placebo-controlled trials. Table 1. Adverse Reactions Occurring in > 2% in Patients atorvastatin calcium tablets Treated with any Dose and Greater than Placebo Adverse Reaction % Placebo N=7,311 %10 mg N=3,908 %20 mg N=188 %40 mg N=604 %80 mg N=4,055 % Any dose N=8,755 Nasopharyngitis 8.2 12.9 5.3 7.0 4.2 8.3 Arthralgia 6.5 8.9 11.7 10.6 4.3 6.9 Diarrhea 6.3 7.3 6.4 14.1 5.2 6.8 Pain in extremity 5.9 8.5 3.7 9.3 3.1 6.0 Urinary tract infection 5.6 6.9 6.4 8.0 4.1 5.7 Dyspepsia 4.3 5.9 3.2 6.0 3.3 4.7 Nausea 3.5 3.7 3.7 7.1 3.8 4.0 Musculoskeletal pain 3.6 5.2 3.2 5.1 2.3 3.8 Muscle Spasms 3.0 4.6 4.8 5.1 2.4 3.6 Myalgia 3.1 3.6 5.9 8.4 2.7 3.5 Insomnia 2.9 2.8 1.1 5.3 2.8 3.0 Pharyngolaryngeal pain 2.1 3.9 1.6 2.8 0.7 2.3 Other adverse reactions reported in placebo-controlled trials include: Body as a Whole : malaise, pyrexia Digestive System: abdominal discomfort, eructation, flatulence, hepatitis, cholestasis Musculoskeletal System : musculoskeletal pain, muscle fatigue, neck pain, joint swelling Metabolic and Nutritional system : transaminases increase, liver function test abnormal, blood alkaline phosphatase increase, creatine phosphokinase increase, hyperglycemia Nervous System : nightmare Respiratory System: epistaxis Skin and Appendages : urticaria Special Senses : vision blurred, tinnitus Urogenital System: white blood cells urine positive Elevations in Liver Enzyme Tests Persistent elevations in serum transaminases, defined as more than 3 times the ULN and occurring on 2 or more occasions, occurred in 0.7% of patients who received atorvastatin calcium tablets in clinical trials. The incidence of these abnormalities was 0.2%, 0.2%, 0.6%, and 2.3% for 10, 20, 40, and 80 mg, respectively. One patient in clinical trials developed jaundice. Increases in liver enzyme tests in other patients were not associated with jaundice or other clinical signs or symptoms. Upon dose reduction, drug interruption, or discontinuation, transaminase levels returned to or near pretreatment levels without sequelae. Eighteen of 30 patients with persistent liver enzyme elevations continued treatment with a reduced dose of atorvastatin calcium tablets. Treating to New Targets Study (TNT) In TNT [see Clinical Studies ( 14.1 )] 10,001 patients (age range 29–78 years, 19% women; 94% - White, 3% Black or African American, 1% Asian, 2% other) with clinically evident CHD treated with atorvastatin calcium tablets 10 mg daily (n=5006) or atorvastatin calcium tablets 80 mg daily (n=4995), In the high-dose atorvastatin calcium tablets group, there were more patients with serious adverse reactions (1.8%) and discontinuations due to adverse reactions (9.9%) as compared to the low-dose group (1.4%; 8.1%, respectively) during a median follow-up of 4.9 years. Persistent transaminase elevations (≥ 3 x ULN twice within 4–10 days) occurred in 1.3% of individuals with atorvastatin 80 mg and in 0.2%of individuals with atorvastatin 10 mg. Elevations of CK (≥ 10 x ULN) were higher in the high-dose atorvastatin group (0.3%) compared to the low-dose atorvastatin group (0.1%). Stroke Prevention by Aggressive Reduction in Cholesterol Levels (SPARCL) In SPARCL, 4,731 patients (age range 21–92 years, 40% women; 93% White, 3% Black or African American, 1% Asian, 3% other) without clinically evident CHD but with a stroke or transient ischemic attack (TIA) within the previous 6 months were treated with atorvastatin calcium tablets 80 mg (n=2365) or placebo (n=2366) for a median follow-up of 4.9 years. There was a higher incidence of persistent hepatic transaminase elevations (≥ 3 x ULN twice within 4–10 days) in the atorvastatin group (0.9%) compared to placebo (0.1%). Elevations of CK (> 10 x ULN) were rare, but were higher in the atorvastatin group (0.1%) compared to placebo (0.0%). Diabetes was reported as an adverse reaction in (6.1%) of subjects in the atorvastatin group and 3.8% of subjects in the placebo group. In a post-hoc analysis, atorvastatin calcium tablets 80 mg reduced the incidence of ischemic stroke (9.2% vs. 11.6%) and increased the incidence of hemorrhagic stroke (2.3% vs. 1.4%) compared to placebo. The incidence of fatal hemorrhagic stroke was similar between groups (17 atorvastatin calcium tablets vs. 18 placebo). The incidence of non-fatal hemorrhagic strokes was significantly greater in the atorvastatin group (38 non-fatal hemorrhagic strokes) as compared to the placebo group (16 non-fatal hemorrhagic strokes). Patients who entered the trial with a hemorrhagic stroke appeared to be at increased risk for hemorrhagic stroke (16% atorvastatin calcium tablets vs. (4% placebo). Adverse Reactions from Clinical Studies of atorvastatin calcium tablets in Pediatric Patients with HeFH In a 26-week controlled study in pediatric patients with HeFH (ages 10 years to 17 years) (n=140, 31% female; 92% White,, 1.6% Black or African American, 1.6% Asians, 4.8% other), the safety and tolerability profile of atorvastatin calcium tablets 10 to 20 mg daily, as an adjunct to diet to reduce total cholesterol, LDL-C, and apo B levels, was generally similar to that of placebo [see Use in Specific Populations ( 8.4 ) and Clinical Studies ( 14.6 )] . 6.2 Postmarketing Experience The following adverse reactions have been identified during post-approval use of atorvastatin calcium tablets. 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. Gastrointestinal Disorders: pancreatitis General Disorders: fatigue Hepatobiliary Disorders: fatal and non-fatal hepatic failure Immune System Disorders: anaphylaxis Injury: tendon rupture Musculoskeletal and Connective Tissue Disorders: rhabdomyolysis, myositis. There have been rare reports of immune-mediated necrotizing myopathy associated with statin use. Nervous system Disorders: dizziness, peripheral neuropathy. There have been rare reports of cognitive impairment (e.g., memory loss, forgetfulness, amnesia, memory impairment, confusion) associated with the use of all statins. Cognitive impairment was generally nonserious, and reversible upon statin discontinuation, with variable times to symptom onset (1 day to years) and symptom resolution (median of 3 weeks). There have been rare reports of new-onset or exacerbation of myasthenia gravis, including ocular myasthenia, and reports of recurrence when the same or a different statin was administered. Psychiatric Disorders: depression Respiratory Disorders: interstitial lung disease Skin and Subcutaneous Tissue Disorders: angioneurotic edema, bullous rashes (including erythema multiforme, Stevens-Johnson syndrome, and toxic epidermal necrolysis)