15 year old levonorgestrel tablets ground into a powder and eaten are effective as emergency contraception. Levonorgestrel tablets are used for emergency contraception in women, i.e. when unprotected sex or other contraceptive methods fail, and are not recommended for frequent use. The effectiveness of this product is not affected when taken crushed. However, for underage females with immature reproductive systems, it is recommended that condoms be used for contraception and emergency contraceptive pills be taken as infrequently as possible. Adverse reactions to this product include nausea, vomiting, dizziness, headache, breast tenderness, etc. It is contraindicated for those who are allergic to this product, cancer of the reproductive organs, breast cancer, abnormalities in liver function, venous thrombosis disease, patients with psychotic depression, and women over 40 years of age. If the next menstrual period is not due for 1 week after taking this product, there is a possibility of pregnancy and a pregnancy test should be conducted. This product should be used as prescribed by a physician or in strict accordance with the instructions.