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  1. Estrogen and progestin
    • 根据 2 个来源
    The combination pill is a type of birth control pill that contains both estrogen and progestin, which are two hormones used to prevent pregnancy. Many brands of combination pills are available.
    Birth control pills, the birth control patch, and the vaginal birth control ring are combined hormonal birth control methods. They contain two hormones: estrogen and progestin.
  2. Combined Hormonal Contraceptives | Contraception | CDC

  3. Combination Birth Control Pills: Effectiveness & Side Effects

  4. Combination birth control pills - Mayo Clinic

  5. Combined estrogen-progestin oral contraceptives: Patient

  6. The Combined Pill (Contraception): Effectiveness and …

    2024年9月16日 · The pill contains two hormones - an oestrogen and a progestogen. If taken correctly, it is a very effective form of contraception (birth control) that can help prevent pregnancy.

  7. Choosing a birth control pill - Mayo Clinic

  8. Combination Birth Control Pill: What You Need To Know - Healthline

  9. Combined Hormonal Birth Control: Pill, Patch, and Ring - ACOG

  10. Combined hormonal contraception - Wikipedia