Usage: Decoction, external use: powdered and sprinkled on the affected area. Hippocampus is sweet and warm, mainly into the kidney meridian, has the effect of warming the kidney and strengthening the yang. If treating the impotence of kidney yang deficiency, it can be used together with sea dog kidney and deer kidney; if treating the urinary and urinary frequency of kidney deficiency, it can be used together with wolfberry and swim bladder; if treating the asthma of kidney yang insufficiency and lack of power to take in and take out, it can be used together with mealybugs, walnut meat and ginseng. Hippocampus has the effect of dispersing lumps and subduing swelling. It can be used in combination with rhubarb and green peels to treat impediments (tangible or intangible lumps in the abdomen with distension and pain), and with Rhizoma Ligustici Chuanxiong, Safflower, and Panax Ginseng to treat bruises, blood stasis, swelling and pain. Hippocampus is contraindicated in cases of yin deficiency and fire exuberance. The adverse reactions of this product are not clear. The drug needs to be used under the guidance of a doctor, do not use the drug blindly.