Radix Rehmanniae Pill is mainly used for warming the spleen yang and has limited efficacy in kidney yang deficiency, and the drug should be taken correctly under the guidance of a doctor.
A common proprietary Chinese medicine, Radix Rehmanniae Pill consists of Radix Rehmanniae Praeparata, Radix Codonopsis Pilosulae, Radix Ginseng, Radix et Rhizoma Atractylodis Macrocephalae with Radix et Rhizoma Glycyrrhizae, and can be used for the treatment of diarrhea, vomiting, and abdominal coldness and pain caused by deficiency of spleen and kidney yang (spleen and kidney deficiency with cold).
Although the drug can also be used for diarrhea caused by spleen and kidney yang deficiency (deficiency of yang qi in the spleen and kidneys), it needs to be combined with medicines that have the effect of warming and tonifying kidney yang (warming and replenishing yang qi in the kidneys) under the guidance of a doctor. Therefore, Radix Rehmanniae Pill is generally not used to tonify kidney yang.
It should be noted that pregnant women should be cautious in using this drug. The drug is warm in nature and should not be taken if the diarrhea is caused by dampness-heat and is accompanied by unsmooth bowel movements and burning in the anus.