If you are using hormonal contraception, including oral contraceptives (birth control pills), NuvaRing, or the Ortho Evra patch, you should know that other medications and supplements you take could increase the risk of contraceptive failure.

Some medications can make hormonal birth control less effective because they increase the metabolism of hormones. When the body breaks down hormones too quickly, it lowers the number of circulating hormones that are needed to provide effective pregnancy protection.﻿﻿

Here are 10 medications that can lower the effectiveness of your hormonal birth control.