The side effects and contraindications of Sha Yuan Zi are not known. Sha Yuan Zi is the dried mature seeds of Astragalus flatulatus, a leguminous plant. The drug is sweet and warm in nature, and belongs to the liver and kidney meridians. It has the effects of tonifying the kidney and assisting the yang, consolidating semen and urination (consolidating semen and urine, preventing random leakage), and nourishing the liver and brightening the eyes. Clinically, it can be used in the treatment of kidney deficiency and lumbago, spermatorrhea and premature ejaculation, dysuria and frequent urination, leucorrhoea (cloudy urine like white slurry), dizziness, and darkened and blurred eyes. The side effects and contraindications of Sha Yuan Zi are not clear, but it is not recommended for patients with yin deficiency and fire (deficiency of yin and essence in the body, and the appearance of hyperactive deficiency fire). Before using Sha Yuan Zi, 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 on their own, so as not to delay the condition.