Yohtex is also known as levonorgestrel tablets, and the first time you take Yohtex the damage is usually not too great, but there are still side effects. Levonorgestrel tablets are mainly used for emergency contraception for women. The main ingredient is levonorgestrel, which is a hormonal drug that can inhibit ovulation, prevent fertilization, thinning of the uterine lining, and thickening of the cervical mucus, preventing penetration of sperm. Taking levonorgestrel tablets for the first time is usually not very harmful to the body, but there will be some side effects, such as headaches, caused by excessive hormones and water retention. Manifested as loss of appetite, nausea, fatigue, dizziness, etc. There is also a possibility that the lack of progesterone may lead to irregular menstruation and endocrine disorders. It needs to be treated under the guidance of a doctor and should not be taken without authorization.