Lettuce is a vegetable, does not have the same efficacy and effect as drugs, but eaten in moderation can be supplemented with a variety of nutrients for the human body. Lettuce is one of the common vegetables with certain nutritional value. Lettuce contains many nutrients, such as carbohydrates (2.8/100g), vitamin C (4mg/100g), calcium, iron, zinc and so on. When eaten in moderation, it can maintain normal life activities to a certain extent. Lettuce can supplement some of the nutrients needed by the human body, but lettuce can not replace the drug, there is no specific efficacy and effect. If you are not feeling well, it is recommended to go to the hospital for standardized treatment so as not to delay the condition, and not to replace drugs with food.