GAVISCON DOUBLE ACTION X24(BLISTER) are tablets used for the treatment of symptoms of: heartburn, acid regurgitation, and indigestion which may occur, for example, following meals and for symptoms of excess stomach acid. Gaviscon double action products contain more calcium carbonate and sodium bicarbonate per dose than original Gaviscon products, so these products also have an antacid effect - hence the double action. To Use: Adults and children 12 years and over: Two to four tablets after meals and at bedtime, up to four times per day. Children under 12 years: Should be given only on medical advice.