Garlic has the efficacy of detoxifying and reducing swelling, killing worms and stopping dysentery, garlic water can only relieve the corresponding discomfort. Garlic is easy to cause skin redness, burning and even blistering, so it should not be applied externally for too long. It should not be taken by those who have deficiency of yin and fire (deficiency of yin essence in the body and hyperactive fire) and those who have diseases of the eyes, tongue, throat and mouth. Garlic is a kind of traditional Chinese medicine, pungent in flavor, warm in nature, and enters the spleen, lung and large intestine meridians. This medicine has the effect of detoxifying swelling, killing worms and stopping dysentery, and is used for treating carbuncle, swollen boils, ringworm, dysentery, lung consumption, and tonic cough. Garlic is easy to cause skin redness, burning and even blistering when used externally, so it should not be applied externally for too long. It should not be taken by those who are suffering from deficiency of yin and fire, or those who have diseases of the eyes, tongue, throat and mouth. If there is a need for medication, it should be used under the guidance of a Chinese medicine doctor, and should not be used blindly on its own to avoid adverse consequences.