After eating diet pills thirsty, the main reasons may be the following: First, the diet pill may contain diuretic drugs, some diet pill manufacturers on the market at present illegal to add some drugs in the diet pill, such as diuretic drugs, resulting in patients in a short period of time to drain too much, resulting in weight loss. If diuretics are added to diet pills, the symptoms of excessive urination and thirst will occur. Second, at the same time combined with diabetes, obese patients are prone to insulin resistance, insulin resistance is an important reason for the development of diabetes, so the patient ate diet pills after the thirst of the great also need to further exclude at the same time combined with diabetes. Third, mental thirst, if the patient due to drinking too much water led to increased urination, urination will further aggravate the symptoms of thirst, the more you drink the more thirsty the situation, that is, intermittent thirst. By actively limiting water, the symptoms of intermittent thirst will improve. So if you have a strong thirst after taking diet pills, you should further find out the ingredients of the diet pills and go to the hospital for further examination if necessary.