Diurex is an over-the-counter diuretic, or water pill, manufactured by Alva-Amco Phamacal Companies, Inc. It is specially formulated to relieve puffiness, water weight gain and bloat, and comes in easy-to-swallow caplets. It is marketed as the number one water pill in the United States, notes the product's manufacturer.
Diurex markets itself as "The Bloat Medicine" for relieving menstrual discomfort and pre-menstrual bloating, according to Alva-Amco. It is purported to increase excess body water flow, pressure-related cramps and swelling promptly. It also works to relieve the pain and discomfort of minor menstrual pain, spasms, headache, breast tenderness, backache and other pains due to strain, stress and overexertion.
The main ingredient in Diurex water pills is pamabrom, which is a diuretic, according to Drugs.com. Pamabrom is not for use by those with kidney disease, high blood pressure or heart disease, and should not be used by anyone who is allergic to it. General dosage of Diurex calls for taking it 6 days before the onset of the menstrual cycle, taking no more than four doses of Diurex within a 24-hour period. It is advisable to drink six to eight glasses of water while taking the medication, and to stop taking it once symptom relief is experienced or the menstrual cycle ends.