Walnut is also known as walnut kernel. Its tonic kidney how long to see the effect needs to be based on the patient’s constitution and condition to judge, can not be generalized, generally based on clinical experience, if the use of the right symptoms, usually about 3 to 7 days may see the effect. The specific time to use the medication to follow the doctor’s instructions. Walnut kernel is a kind of traditional Chinese medicine, for the walnut plant walnut fruit kernel, its flavor is sweet, warm, to the kidney, lung, large intestine meridian, with tonifying the lungs and kidneys, the gas to set wheezing, lubricate the bowel and laxative effect, can be used for lumbar and knee pain, spermatorrhea and enuresis, cold and panting cough, bowel dryness and constipation and other diseases. The adverse effects of this product are not clear at present. Note that this product is prohibited for those who are allergic to this product, allergic individuals should be cautious, phlegm fire accumulation of heat, yin deficiency and fire (deficiency of yin essence in the body, the emergence of hyperactive fire) and loose stools are prohibited to take. If you need to use this product, you should be under the guidance of a physician, do not use the drug without authorization, so as not to cause adverse reactions.