Diuretics usually start working an hour or two after you take them.

How long do Diurex take to work?

Diuretics usually start working an hour or two after you take them.

How many Diurex water pills do you take a day?

Adults: Two (2) pills every 4 to 6 hours while symptoms persist, not to exceed eight (8) pills per day. Start taking 5 or 6 days before onset of period and continue until desired relief is obtained or end of period. Drink 6 to 8 glasses of water daily.