Birth Control Pill vs. Shot (Depo-Provera): Similarities and Differences

Birth Control Pill vs. Shot (Depo-Provera): Similarities and Differences

Side Effects of Birth Control Pills

Combination birth control pills contain estrogen and progestin, and are about 99% effective in preventing pregnancy if you take them as directed. The mini-pill only contains estrogen, and is up to 95% effective.

Examples of side effects of birth control pills include weight gain, irregular bleeding, mood changes, nausea, and breast tenderness.