The gentle diuretic. Water-weight loss formula. Helps relieve: bloat & puffiness, related fatigue; water weight gain. America's No. 1 OTC diuretic (Based on independent syndicated market research data). Prompt & effective. Lose excess body water. Maximum strength per easy to swallow 2 pill dose. Medically recognized relief. Helps reduce excess body water: weight; bloat; puffiness. Calcium content: 30 mg/pill. Identification: Light green colored, round pill bearing the identifying mark Alva. The active ingredient in Diurex Ultra Water Pills has been recognized to be safe and effective by a US Government Medical Expert Advisory Panel when taken as directed.