What's the Difference Between High- and Low-Dose Birth Control?

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What's the Difference Between High- and Low-Dose Birth Control?

Medically reviewed by Laura YoungCris Cantón / Getty ImagesCombination birth control pills contain both estrogen and progesterone. The hormones prevent pregnancy by stopping ovulation and changing the lining of your uterus (womb) and your vaginal discharge to prevent sperm from entering your body.Some people have side effects when taking birth control pills with estrogen. Low-dose pills contain less estrogen than high-dose pills, which may help …