Zosaar Side Effects

Losartan potassium has been found to be generally well tolerated in hypertension; side effects have usually been mild and transient in nature and have not required discontinuation of therapy.
The most common drug-related side effects were asthenia/fatigue, dizziness, hypotension and hyperkalaemia (see Hypotension and Electrolyte/Fluid Imbalance under Precautions).
Hypersensitivity have been reported in post-marketing experience. Anaphylactic reactions, angioedema including swelling of the larynx and glottis causing airway obstruction and/or swelling of the face, lips, pharynx and/or tongue has been reported rarely in patients treated with losartan; some of these patients previously experienced angioedema with other medicines including ACE inhibitors.
Vasculitis, including Henoch-Schoenlein purpura, has been reported rarely.
Gastrointestinal: Hepatitis (reported rarely), liver function abnormalities, vomiting.
Haematologic: Anaemia.
Musculoskeletal: Myalgia.
Nervous System/Psychiatric: Migraine.
Respiratory: Cough.
Skin: Urticaria, pruritus.