مريض يبدأ ميتفورمين. أي أثر جانبي شائع يُعلَّم عنه؟

A client starts metformin. Which common side effect is taught?

1. Swollen feet with increasing breathlessness
2. Early stomach upset and diarrhoea, eased by food
3. Severe hypoglycaemia when it is taken alone each day
4. Large weight gain during the first month

Answer: B) Early stomach upset and diarrhoea, eased by food. Metformin causes early GI symptoms, reduced by taking it with food and slow titration. Alone it rarely causes hypoglycaemia; rarely it causes lactic acidosis with renal failure or hypoxia.