Eating birth control pills want to vomit is a side effect of the drug, birth control pills will stimulate the gastric mucosa, if the patient has such symptoms, you can take oral vitamin B6 or multivitamin to reduce the symptoms. If you take short-acting oral contraceptives, it is best to take them at night before going to bed, which will help to reduce the side effects. If the patient feels that the symptoms are more serious after taking it, consider changing the variety of short-acting contraceptive pills, because there are more varieties of short-acting contraceptive pills. In addition, try to eat a lighter diet, do not eat too greasy, do not eat cold, spicy, stimulating food, eat more vegetables and fruits.