Evening primrose oil is not recommended for long-term use by men. Evening primrose oil, the name of Chinese medicine. It is the fatty oil of the seeds of evening primrose and yellow-flowered evening primrose of the willowherb family. Taste bitter, slightly pungent, slightly sweet, flat. It has the efficacy and effect of activating blood circulation, restoring wind and calming the liver, reducing swelling and astringing sores. If taken for a long time, it can sometimes irritate the stomach and intestines leading to side effects such as stomach pain, nausea and constipation. The disease is constantly changing, taking a long time to take a drug is not conducive to the recovery of the disease. Take a period of time need to check regularly to see how the disease is recovering, according to the different changes in the condition of the timely adjustment of the drug. If the disease has been cured, under the guidance of the doctor to continue to consolidate a period of time in a timely manner to stop, do not recommend too long to take the drug. It is recommended to take the medication under the guidance of a professional doctor, do not take the medication on your own, so as not to delay the condition.