Long-term consumption of garlic water may lead to gastrointestinal diseases, cause mouth ulcers, sore throat, constipation, hemorrhoids and other symptoms, and some damage to the eyes. 1. Gastrointestinal diseases: garlic water is mainly made of raw garlic, garlic is a spicy stimulating food, containing allicin, the stomach and intestines have a certain irritating effect, long time to take a large number of patients may lead to gastritis, gastric ulcers, enteritis and other gastrointestinal diseases. 2. Fire: garlic water can cause mouth ulcers, sore throat, constipation, hemorrhoids and other symptoms if eaten in large quantities. 3. Eye damage: garlic water can affect the absorption of vitamin B, can cause the lack of B vitamins in the body, there is some damage to the eyes, there may be dry eyes, eye astringency, photophobia, blurred vision, tearing, and even conjunctivitis. In daily life, moderate consumption of garlic has certain benefits to the body, but too much will produce many uncomfortable symptoms, if accidentally eat a large amount of garlic water and discomfort, it is recommended to consult a doctor in time.