Duhuo has the efficacy of dispelling wind-dampness, relieving pain and detoxifying the surface. Its side effects may include numbness of the tongue, nausea, vomiting and stomach discomfort, etc. In mild cases, the above symptoms may disappear after stopping the medicine, while in severe cases, the symptoms should be treated symptomatically. Duhuo is a traditional Chinese medicine with pungent and bitter flavor, slightly warm in nature, and belongs to the kidney and bladder meridians. It is used in treating wind-cold-dampness paralysis (paralysis of limbs caused by wind, cold and dampness), wind-cold-dampness syndrome, headache of Shaoyin, itching of skin and other diseases. Overdose of this product has irritating effect on the gastrointestinal tract, symptoms of poisoning can be seen as numbness of the tongue, nausea, vomiting and stomach discomfort. In mild cases, the above symptoms can disappear after stopping the drug, and in severe cases, symptomatic treatment should be given. Note that this product is prohibited for those who are allergic to this product, and allergic people should be cautious. The amount of this product should not be taken internally is not too large, people with yin deficiency and blood dryness (deficiency of yin fluid, dryness and heat in blood) should be cautious. If you need to use this product, you should be under the guidance of a physician to identify the evidence, do not blindly use your own medication, so as not to cause adverse reactions.