Levocanidin is generally used to improve sperm quality, and it is best to stop taking the drug and then prepare for pregnancy, so it is not possible to have a child while taking the drug. After short-term use, nausea and vomiting as well as special body odor may occasionally occur, and then can disappear by itself, long-term use may have gastrointestinal reactions, abdominal pain, diarrhea and so on. During the preparation for pregnancy, it is best for both men and women not to take any medication, which is not conducive to the healthy birth of the baby, usually pay attention to avoiding fatigue, relaxation, stress relief, coitus in the ovulation period of women will improve the chances of pregnancy, men are prohibited from smoking during the preparation for pregnancy, prohibited from drinking alcohol. If any uncomfortable symptoms, it is recommended to go to the regular hospital to find a professional doctor for treatment.