The benefits of drinking lemon in water are to replenish the body with the nutrients it contains, such as vitamin C, and to maintain physiological functions. However, lemon is a food and does not have any efficacy. Lemon is a common fruit with some nutritional value. From a nutritional point of view, because lemons contain 91% water, 1.1% protein, 6.2 carbohydrates, 22mg of vitamin C, 1.3% dietary fiber and 37 calories of energy. So there are some benefits of using lemon in water to drink, where the vitamin C is soluble in water and the carbohydrates can be partially soluble in water. However, lemon belongs to food, and food does not have any effect. Secondly, because of the limited ingredients in food, it can not replace medication, so when the body is in discomfort you need to cooperate with the doctor to take medication.