Cistanchis should not be consumed by hypertensive patients suffering from yin deficiency (deficiency of yin and essence in the body, resulting in hyperactivity of deficiency fire). Cistanchis is a kind of traditional Chinese medicine, which is the fleshy stem of Cistanchis with scaly leaves in the genus Cistanchis of the family Ledebouriidae. It is sweet, salty and warm in nature, and belongs to the kidney and large intestine meridians. Its effect is to tonify the kidney and aid yang, in addition to its laxative effect. It is useful in treating deficiency of kidney yang, insufficient essence and blood, impotence and premature ejaculation, infertility with uterine coldness, lumbar and knee pain, and impotence and weakness. Adverse effects of Cistanche are not clear. Contraindications are not clear. It is contraindicated in cases of yin deficiency and fire and loose stools (loose, unformed feces) and diarrhea. From the above, it can be seen that Cistanchis are contraindicated in patients with yin deficiency and exuberant fire, so hypertensive patients with yin deficiency and exuberant fire should not take Cistanchis. If you need to use medication, it is recommended to use it under the guidance of traditional Chinese medicine doctors, do not use medication on your own to avoid bringing discomfort to your body.