ALDACTAZIDE BASICS: Athletes use diuretics (like Aldactazide) in order to shed extra water retained in the body. This practice is popular in competitive bodybuilding situations, as a drop in subcutaneous water storage can result in an increase in the level of definition to the physique. Competitors in weight class sports like boxing and wrestling also make use of diuretics (like Aldactazide), administering them to manipulate their body weight for category adjustments. Since the "weigh-in" procedure is generally done a day or days before a competition, the athlete has a clear window of opportunity to drop body weight and lower his/her weight class assignment. The hours or days after the weigh-in gives the competitor more than ample time to rehydrate, and compete at a weight well above that which is dictated by their category. This could certainly be considered an (extremely) unfair advantage, if it were not balanced out by the fact that "dropping weight" (either pharmaceutically or otherwise) is an almost universal practice within such disciplines.