What is the best combination for Spleen and Kidney Yang Deficiency to take Radix Rehmanniae Pills with?

What is the best combination for Spleen and Kidney Yang Deficiency to take Radix Rehmanniae Pill with, needs to be determined by the disease condition. Generally speaking, if there is diarrhea, it can be combined with Si Shen Wan; if there is fire failure of the vital gate (weakness of kidney yang in the body, which reduces the function of warming and promoting the movement of qi and blood), it can be combined with Yu Gui Wan.
For those with spleen and kidney yang deficiency, due to deficiency of spleen and kidney yang qi and malfunction of transportation, there are often symptoms such as cold pain in the abdomen, lack of warmth in the limbs and abdominal distension, etc. They can take Radix Rehmanniae Pills to warm the middle and strengthen the spleen and improve the symptoms of spleen and stomach coldness. If there is diarrhea, it can be combined with Si Shen Wan which warms the kidney and disperses cold, astringes the intestines and stops diarrhea (relieves diarrhea by enhancing the intestinal astringency), and this medicine cures diarrhea due to deficiency of kidney yang.
For those with spleen and kidney yang deficiency, if there are also symptoms of kidney yang deficiency such as coldness in the lower back and knees, impotence and spermatorrhea, frequent and clear urination, loose stools, etc., it can be combined with Right Angelica Pill, which consists of Chinese medicines such as Chinese yam, ripened Chinese yam, Chinese cinnamon and other Chinese medicines, and has the effect of warming and nourishing the kidney yang, filling up the essence and stopping the spermatorrhea, and has no contraindications to be combined with Radix Rehmanniae Praeparata Pills.
The adverse effects of these drugs are not known. Patients who feel unwell are advised to consult a doctor for standardized treatment. Different diseases, spleen and kidney yang deficiency people in taking with the medication is also different, the specific use of drugs, need to be combined with the physical condition, follow the instructions of the doctor.