Immune System Disorders: Very Rare: Hypersensitivity reactions including angioedema, urticaria, bronchospasm, hypotension and collapse.
Metabolism and Nutrition Disorders: Rare: Hypokalaemia.
Potentially serious hypokalaemia may result from beta2 agonist therapy.
Very Rare: Lactic acidosis.
Lactic acidosis has been reported very rarely in patients receiving intravenous and nebulised salbutamol therapy for the treatment of acute asthma exacerbation.
Nervous System Disorders: Common: Tremor, headache. Very Rare: Hyperactivity.
Cardiac Disorders: Common: Tachycardia. Uncommon: Palpitations. Very Rare: Cardiac arrhythmias including atrial fibrillation, supraventricular tachycardia and extrasystoles.
Vascular Disorders: Rare: Peripheral vasodilatation.
Respiratory, Thoracic and Mediastinal Disorders: Very Rare: Paradoxical bronchospasm.
Gastrointestinal Disorders: Uncommon: Mouth and throat irritation.
Musculoskeletal and Connective Tissue Disorders: Uncommon: Muscle cramps.
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