The hazards of evening primrose are unknown. The medicinal source of evening primrose is the root of the plant evening primrose in the willowherb family. The medicine is sweet, bitter and warm in nature, with the efficacy of dispelling wind-dampness and strengthening tendons and bones. Clinically, it can be used for the treatment of wind-cold-dampness paralysis (wind, cold and dampness three evils invade the body resulting in paralysis of the limbs), soreness and weakness of the tendons and bones and other conditions. Evening primrose is mainly taken by decoction and internal use. The adverse reactions and contraindications of the drug are not clear, but avoid eating spicy and greasy food that is not suitable for digestion during the period of taking. The hazards of the drug are not clear. Before using Evening Primrose, it is recommended to go to a regular hospital, under the guidance of a professional physician to identify the evidence of the treatment, not to take it on their own, so as not to delay the condition.