10 Pack of Eno Powder Jar 100g - the perfect solution for fast and effective relief from acidity and indigestion. However, Eno is not limited to these uses. Each jar contains 100g of the trusted Eno brand powder which dissolves quickly in water to provide instant relief. The powder is a blend of sodium bicarbonate, citric acid, and anhydrous sodium carbonate. The compact jar is easy to carry with you wherever you go, ensuring that relief is always at hand.