It nourishes the kidney and replenishes essence; nourishes the liver and improves eyesight; consolidates the fetus and stops diarrhea. It is mainly used to treat back and knee pain; spermatorrhea; impotence; premature ejaculation; infertility; thirst; stranguria; enuresis; blurred vision and tinnitus; restless fetus; miscarriage; diarrhea