prescription ones? oooh yes. Non prescription? well i never found they were much cop, better to cut your salt and increase you water intake.
And if you don't have a medical need for the prescribed ones, don't even think about it.
I have to take two 40mg of Furosemide tabs every day as prescribed by my GP and I don`t go out for about 3 hours afterwards unless I`m sure there is a public loo available nearby.
Bananas are rich in potassium with works in conjunction with sodium and iodine to regulate your body's water levels. If I eat two bananas or more for brekkie, I pass loads of water.
A few years ago my wife had swollen legs and ankles through water retention and a man at the Health Food shop recommended drinking Dandelion tea.
As kids, we used to call dandelions "Piddle Beds" as the are a diuretic.
They worked wonders for my wife and were dirt cheap, about 80 pence for 20 sachets at that time. Now £1.29 from Holland and Barrett.