What foods should you eat after emergency contraception can increase its effectiveness? Emergency contraception is a sudden method of contraception, but birth control pills cannot guarantee a 100% success rate. Sometimes, birth control pills may not be effective due to personal constitution or drug side effects. Some foods have a certain effect in promoting pregnancy, so what foods should be eaten after emergency contraception to increase the success rate and reduce the risk of pregnancy? 1. Increase protein intake. Protein is one of the nutrients needed by the human body, and increasing protein intake