De Gas 48sActive ingredient Simethicone 100mg Inactive ingredients Hydroxybenzoates. No artificial colouring or flavouring. Product description De Gas relieves the pressure and discomfort caused by a build up of natural wind in the body. Simethicone has been used for many years to help relieve wind, gas and bloating. It has no reported side effects. De Gas is useful for adults and children and is suitable for pregnant women. Each packet of De Gas contains 24