Antacids are generally regarded as safe. No data is available to suggest any harmful effects of Aluminium Hydroxide and Magnesium Hydroxide associated with Simethicone in pregnant women. A small amount of Aluminium Hydroxide and Magnesium Hydroxide may be secreted in breastmilk and the concentration is too small to be harmful. Secretion of Simethicone in the breast milk of nursing mothers has not been established.