Dandellion root, Caffeine, Taurine also has mild diuretic qualities...Dandelion root is probably the most potent OTC (some sources claim as potent as Lasix, but in animal studies ) diuretic and given it contains K+(potassium) you don't have to worry about being in a state of electrolyte imabalance, at least as far as potassium goes. Getting depleted of sodium is also dangerous so don't overdo..