Antacids (e.g., Gaviscon, Magnesium Trisilicate)
Absolute Contraindications
- Severe renal impairment (for magnesium- or aluminium-based antacids) Main Side Effects
- Constipation (aluminium-based) or diarrhoea (magnesium-based)
- Rare: Hypermagnesemia
Main Interactions
- Reduced absorption of drugs like tetracyclines.