For syrup and tablet: Immune system disorders: Anaphylactic reactions (rare, life-threatening allergic reactions) [including anaphylactic shock, angioedema (rapid swelling of the skin), pruritus (itchiness), rash, urticaria, and other hypersensitivity], severe allergic reactions, severe cutaneous allergic reactions (SCARs) [which includes erythema multiforme and Stevens-Johnson syndrome].
Gastrointestinal disorders: Abdominal pain, diarrhea, dyspepsia (indigestion, feeling of fullness), heartburn, nausea, vomiting.
Additional undesirable effects for syrup only: Nervous system disorders: Dysgeusia (changed taste).
Respiratory, thoracic and mediastinal disorders: Dry throat, oral and pharyngeal hypoesthesia (partial loss of sensation).
Gastrointestinal disorders: Dry mouth.