Birth control pills can cause an increase in hormone levels in the body, which can accelerate the loss of nutrients from the body, that is, due to increased metabolism. Among them, the loss of vitamins increases the fastest, and vitamin C, which is the vitamin required by the body in the largest amount, is also lost the most. Therefore, taking birth control pills and vitamin C together can alleviate this loss. At the same time, reduce the damage to the body, timely supplementation of vitamin C is good for the body. In addition, vitamin C has a certain effect of enhancing human immunity, which can improve the body’s resistance to diseases and can also relieve the side effects of nausea and vomiting caused by birth control pills.