There is no such thing as the best combination of lock yang, it is only good if it suits the needs of the condition. Lock yang is a Chinese medicine, for lock yang plant lock yang fleshy stem, has the effect of tonifying the kidney to help yang, laxative effect. For the impotence of slippery semen, constipation and other symptoms have a therapeutic effect. There is no such thing as the best match for lock yang, and the combination of drugs to meet the needs of the condition is a good match. For example, lock yang is used in conjunction with dragon bone, cistanche, cuttlebone and poria to treat impotence and spermatorrhea. Lockyang is used with Radix Codonopsis pilosulae and Radix et Rhizoma Dioscoreae to treat impotence and premature ejaculation. Lockyang is used with mulberry seeds for weak qi and yin deficiency in old age; Lockyang is used with Lonicera japonica for blood in urine and gonorrhea. Adverse effects and contraindications of lock yang are not clear at present. It should be noted that it is contraindicated in cases of yin deficiency (deficiency of yin and essence in the body, resulting in hyperactive fire), and is contraindicated in cases of solid heat and constipation. If you need to use the drug, should be guided by a traditional Chinese medicine practitioner under the guidance of the identification of drugs, not to buy their own use of drugs, so as to avoid the delay of the drug is not the right evidence.