When taking Cistanche deserticola orally, it usually takes 3 to 5 days to see certain effects. Cistanche deserticola is a commonly used traditional Chinese medicine in clinical practice. It has the effects of tonifying the kidneys, strengthening the yang, moistening the intestines and laxative. It can be used to treat cold pain in the waist and knees caused by insufficient kidney yang, difficulty in urination or edema, impotence and premature ejaculation, and short sexual function time. If it is used to treat kidney yang deficiency, the effect will be relatively slow. If necessary, it can be treated with other drugs, and the effect will be better. Hope this helps, thank you for your support!