Plan B One-Step is an over-the-counter emergency contraceptive pill containing 1.5 mg of levonorgestrel. It is designed to prevent pregnancy after unprotected sex or birth control failure when taken orally as soon as possible within 72 hours (3 days).
Key Product Details
Active Ingredient: Levonorgestrel (1.5 mg)
Form: Single oral tablet
Availability: Over-the-counter without an ID or age requirement in all U.S. states
Timing Window: Most effective when taken within 72 hours of unprotected intercourse
How It Works
Delays Ovulation: Temporarily stops or delays the release of an egg from the ovary
Prevents Fertilization: Can thicken cervical mucus to block sperm from reaching an egg
Limitations: Does not work if you are already pregnant, will not terminate an existing pregnancy, and does not protect against STIs
Common Side Effects
Changes to your period (heavier, lighter, or early/delayed)
Nausea, fatigue, or headache
Spotting or bleeding before your next period
If you'd like, I can provide information on:
Generic alternatives that cost less
How to take it with tips to avoid nausea
When to take a pregnancy test to confirm it worked
Plan B One-Step is an over-the-counter emergency contraceptive pill containing 1.5 mg of levonorgestrel. It is designed to prevent pregnancy after unprotected sex or birth control failure when taken orally as soon as possible within 72 hours (3 days).
Key Product Details
Active Ingredient: Levonorgestrel (1.5 mg)
Form: Single oral tablet
Availability: Over-the-counter without an ID or age requirement in all U.S. states
Timing Window: Most effective when taken within 72 hours of unprotected intercourse
How It Works
Delays Ovulation: Temporarily stops or delays the release of an egg from the ovary
Prevents Fertilization: Can thicken cervical mucus to block sperm from reaching an egg
Limitations: Does not work if you are already pregnant, will not terminate an existing pregnancy, and does not protect against STIs
Common Side Effects
Changes to your period (heavier, lighter, or early/delayed)
Nausea, fatigue, or headache
Spotting or bleeding before your next period
If you'd like, I can provide information on:
Generic alternatives that cost less
How to take it with tips to avoid nausea
When to take a pregnancy test to confirm it worked