Dydrogesterone tablets are generally not fattening. Dydrogesterone tablets are progestins with menstrual stimulating and fetus preserving effects. When women take drogastrol under the guidance of a doctor, they should take it in small doses and for a short period of time, so that they will not gain weight significantly. However, some women may experience nausea, vomiting and other gastrointestinal discomfort and headache when taking drogastrol, which are normal. The side effects will gradually disappear after stopping taking the drug. When used as a menstrual stimulant medication, drospirenone tablets need to be taken for ten days in a menstrual cycle, and when used as a birth control medication, they should be taken within the third trimester of pregnancy, and after the third trimester, drospirenone tablets are no longer needed.