What is the effect of short-acting contraceptives?

If we only look at the success rate of contraception, the effective rate of short-acting contraceptives is 99%, which can meet the requirements. However, short-acting contraceptives need to be taken continuously for 2 1 day, without omission, otherwise contraceptive failure may occur, and early pregnancy reactions such as dizziness, nausea, vomiting and breast swelling may easily occur, which will bring a lot of discomfort to women. Short-acting contraceptives have shortcomings and are easily missed. Unprotected sexual intercourse occurred during the missed service, and need to take emergency contraceptives to remedy it? Mei Dan levonorgestrel enteric-coated tablets can be taken, which have the patent of enteric-coated tablets and only dissolve in the small intestine, thus greatly alleviating the vomiting reaction caused by gastric disintegration, leaving more ingredients in the body, ensuring the dosage of the drug, and thus improving the success rate of contraception. You need to take it within 72 hours after the event, and the sooner you take it, the better. After four clinical stages, the success rate is as high as 99.8%, which not only greatly reduces the discomfort after taking it, but also has higher contraceptive efficiency.