The generic name of Gold Yukon is Levonorgestrel Tablets. The side effects of levonorgestrel tablets are mainly gastrointestinal symptoms, which usually disappear gradually within 24 hours to 3 days, and the withdrawal bleeding caused usually occurs in 3 to 10 days. 1. Gastrointestinal symptoms: after taking levonorgestrel tablets, there may be nausea, vomiting, dizziness, generalized weakness and other symptoms, you need to drink more water, usually within 24 hours the symptoms will gradually disappear, the longest not more than 3 days, no treatment is needed. 2. Withdrawal bleeding: after taking levonorgestrel tablets, generally in 3 to 10 days will produce withdrawal bleeding, withdrawal bleeding amount is more or less, the largest amount is generally the same as normal menstruation, the next time to menstruation is uncertain, generally within three menstrual periods will be able to return to the normal menstrual cycle. Levonorgestrel tablets belong to the post facto contraception, there is no contraceptive effect on sexual life after taking the drug. Emergency contraceptive pills should not be used indiscriminately, and must be used under the guidance of a doctor.