First of all, you must understand the efficacy and indications of 'Yougui Pills', and then you will know "will there be any side effects"...

Yougui Pills

Efficacy: Warm and nourish kidney yang, replenish semen and stop hemorrhage.

Indications: Insufficient Yuan Yang, or congenital weakness, or overwork, which can lead to the death of the door fire, resulting in deficiency and coldness of the spleen and stomach, less food intake; or vomiting and swelling; or stomach upset and choking; or cowardice Aversion to cold; or multiple pain in the umbilicus and abdomen; or loose stools and frequent diarrhea; or spontaneous discharge of water, resulting in weak stranguria and cold hernia; or cold invading the valley, resulting in numbness and pain in the limbs; or cold in the lower burner and water evil Swelling; impotence deficiency and slippery semen, impotence and semen coldness.

"Prescription Science" says: This prescription is formulated, "It is suitable to benefit the source of fire to cultivate the yang of the right kidney." To nourish the yang in the kidneys, we must "seek yang from the yin", that is, to nourish the yang in the kidneys and tonify the yang with a product that nourishes the essence, then we can have the effect of nourishing the yang. The cinnamon in the prescription and the antler glue added with flesh and blood are all good at warming and tonifying kidney yang, replenishing essence and marrow; Rehmannia glutinosa, dogwood, yam, dodder, wolfberry, Eucommia ulmoides are all designed to nourish yin and kidney, nourish the liver and spleen; especially Angelica sinensis. Nourish blood and nourish liver. The combination of various medicines can warm the yang and benefit the kidneys. It can replenish essence and blood to cultivate the yang in the kidney.

It is also beneficial to health if a normal person takes it occasionally...