Lamivudineside effects

The following adverse reactions are discussed in other sections of the labeling:

Hematologic toxicity, including neutropenia and anemia.

Symptomatic myopathy.

Lactic acidosis and severe hepatomegaly with steatosis.

Exacerbations of hepatitis B.

Hepatic decompensation in patients co-infected with HIV-1 and hepatitis C.

Exacerbation of anemia in HIV-1/HCV co-infected patients receiving ribavirin and zidovudine.

Pancreatitis.

Immune reconstitution syndrome.

Lipoatrophy.

Most commonly reported adverse reactions (incidence greater than or equal to 15%) in clinical trials of combination lamivudine and zidovudine were headache, nausea, malaise and fatigue, nasal signs and symptoms, diarrhea, and cough. To report SUSPECTED ADVERSE REACTIONS, contact Hetero Labs Limited at 1-866-495-1995 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 with rates in the clinical trials of another drug and may not reflect the rates observed in clinical practice. Lamivudine plus Zidovudine Administered as Separate Formulations In 4 randomized, controlled trials of EPIVIR 300 mg per day plus RETROVIR 600 mg per day, the following selected adverse reactions and laboratory abnormalities were observed (Tables 1 and 2). Table 1. Selected Clinical Adverse Reactions (Greater than or Equal to 5% Frequency) in 4 Controlled Clinical Trials with EPIVIR 300 mg per day and RETROVIR 600 mg per day Adverse Reaction EPIVIR plus RETROVIR (n = 251) Body as a whole Headache 35% Malaise & fatigue 27% Fever or chills 10% Digestive Nausea Diarrhea 33% 18% Nausea & vomiting 13% Anorexia and/or decreased appetite 10% Abdominal pain 9% Abdominal cramps 6% Dyspepsia 5% Nervous system Neuropathy 12% Insomnia & other sleep disorders 11% Dizziness 10% Depressive disorders 9% Respiratory Nasal signs & symptoms 20% Cough 18% Skin Skin rashes 9% Musculoskeletal Musculoskeletal pain 12% Myalgia 8% Arthralgia 5% Pancreatitis was observed in 9 of the 2,613 adult subjects (0.3%) who received EPIVIR in controlled clinical trials. Selected laboratory abnormalities observed during therapy are listed in Table 2. Table 2. Frequencies of Selected Laboratory Abnormalities among Adults in 4 Controlled Clinical Trials of EPIVIR 300 mg per day plus RETROVIR 600 mg per day a Test (Abnormal Level) EPIVIR plus RETROVIR % (n) Neutropenia (ANC <750/mm 3 ) 7.2% Anemia (Hgb <8 g/dL) 2.9% Thrombocytopenia (platelets <50,000/mm 3 ) 0.4% ALT (>5.0 x ULN) 3.7% AST (>5.0 x ULN) 1.7% Bilirubin (>2.5x ULN) 0.8% Amylase (>2.0 x ULN) 4.2% ULN = Upper limit of normal. ANC = Absolute neutrophil count. n = Number of subjects assessed. a Frequencies of these laboratory abnormalities were higher in subjects with mild laboratory abnormalities at baseline.

6.2 Postmarketing

Experience The following adverse reactions have been identified during postmarketing use. Because these reactions are reported voluntarily from a population of unknown size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure. Body as a Whole Redistribution/accumulation of body fat. Cardiovascular Cardiomyopathy. Endocrine and Metabolic Gynecomastia, hyperglycemia. Gastrointestinal Oral mucosal pigmentation, stomatitis. General Vasculitis, weakness. Hemic and Lymphatic Anemia, (including pure red cell aplasia and anemias progressing on therapy), lymphadenopathy, splenomegaly. Hepatic and Pancreatic Lactic acidosis and hepatic steatosis, pancreatitis, posttreatment exacerbations of hepatitis B. Hypersensitivity Sensitization reactions (including anaphylaxis), urticaria. Musculoskeletal Muscle weakness, CPK elevation, rhabdomyolysis. Nervous Paresthesia, peripheral neuropathy, seizures. Respiratory Abnormal breath sounds/wheezing. Skin Alopecia, erythema multiforme, Stevens-Johnson syndrome.