The difference between Gou Deer Er Gum Pills and Gou Deer Er Xian Gum is the different drug composition, efficacy and clinical application. 1. The two pills are composed of tortoise shell glue, antler glue, Ba Ji Tian, boneset, continuity, Cortex Eucommiae, ripened di Huang, Angelica sinensis, white peony and so on. Gou Deer Er Xian Gum is composed of antler, turtle board, ginseng and wolfberry. 2. Turtle Deer Erxian Pill has the effect of warming the kidney yang (warming and replenishing the kidney yang qi), filling the essence and marrow; Turtle Deer Erxian Pill has the effect of nourishing yin and filling the essence, benefiting the qi and strengthening the yang. 3. Gu De Er Xian Pill is used for kidney yang deficiency (lack of yang qi in kidney), deficiency of essence and blood, impotence and premature ejaculation, dreaming and slippery semen, lumbar pain and soreness, weakness of muscles and bones, dizziness, tinnitus, blurred eyes, thirst and excessive urination, fatigue (lack of mental energy) and lethargy, and coldness and fear of cold, etc.. Turtle and Deer Erxian Gum is mainly used for the deficiency of true essence, insufficiency of essence and blood, generalized thinness, impotence and spermatorrhea, blurred vision, lumbar and knee soreness and weakness (the feeling of lumbar and knee soreness and weakness), prolonged infertility, and so on. If you need to take the above medicine to cure your illness, it is recommended to take it under the guidance of a doctor in order to avoid the risk of medication and adverse consequences to your body.