Clinically, taking contraceptive pills is harmful, only some contraceptive pills have relatively small side effects, so when choosing contraceptive pills, it is recommended to choose the contraceptive pills with relatively small side effects for oral administration. At present, the clinical short-acting contraceptive pills side effects are relatively small is Yosmin, because Yosmin in the selection of progesterone is kynurenone, will not cause sodium retention in the body of the situation, so in the clinic will not make the drug users appear fat situation. It is recommended to take vitamin E and vitamin C while taking short-acting oral contraceptives to avoid skin discoloration and dullness due to contraceptives. In addition, if you take emergency contraceptive pills, the side effects will be greater, because the progestin in emergency contraceptive pills is five times more than the progestin in other short-acting contraceptive pills, so it may cause damage to the liver and kidney functions, and lead to menstrual disorders.