Yang deficiency is mostly caused by spleen yang deficiency. Taking Fuzi Lizhong Pill has the fastest effect.

But if the kidney is yang-deficient, it will also cause yang deficiency. You need to take Jinkui Shenqi Pill or Gui You Pill to warm and tonify kidney yang, which can solve the problem of yang deficiency as soon as possible.

If your waist and knees are sore or your low back pain is kidney yang deficiency, just take Jingui Shenqi Pill.

This is my answer to your question. Thank you.