Should not be used during pregnancy unless potential benefit outweighs risk. Malaria in pregnant women increases risk of maternal death, miscarriage, still-birth and low birth weight with associated risk of neonatal death. Although travel to malarious areas should be avoided during pregnancy, if unavoidable, effective prophylaxis strongly advised in pregnant women. Although excreted in breast milk, amount is insufficient to confer any benefit on infant. Separate chemoprophylaxis required for infant.