The generic name for Yohtex is levonorgestrel, which is an emergency contraceptive, and the sooner it is taken after unprotected sex or contraceptive failure, the more effective it will be. Levonorgestrel is used as an emergency contraceptive within 72 hours of unprotected sex or contraceptive failure, so the sooner you take it, the better. Adverse effects such as early or delayed menstruation in the month in which the medicine is taken, vomiting, etc. may occur after taking the medicine, which can be relieved on their own. Nursing women should suspend breastfeeding for at least 3 days after taking the medicine. This product is not recommended for frequent use, and reliable contraception should be used after taking the drug until the next menstrual period. The use of this drug is contraindicated in cases of hypersensitivity to this drug or to the components of the formula, in cases of suspected pregnancy, in women over 40 years of age. The specific dosage and usage of the above medicines should follow the doctor’s instructions, and should not be used on their own to avoid adverse reactions.