Question 1

What is Plan B?

Accepted Answer

Plan B is an emergency contraceptive medication that contains levonorgestrel, a synthetic version of the hormone progestin. It is categorized as a backup method of contraception intended to reduce the likelihood of conception.

The medication functions by delaying or preventing the release of an egg from the ovary, thereby stopping fertilization before it can occur. It is designed for short-term use and is not a substitute for routine contraceptive options.

Question 2

What is Plan B used for?

Accepted Answer

Plan B is used to treat emergency contraception .

Question 3

How does Plan B work?

Accepted Answer

How Plan B Prevents Pregnancy

Plan B contains levonorgestrel, a synthetic version of the hormone progesterone. It is designed to prevent pregnancy before it starts by interfering with the normal reproductive cycle. It works in the following ways:

Delaying Ovulation: The primary way this medication works is by stopping or delaying the release of an egg from the ovary. If there is no egg available for sperm to fertilize, pregnancy cannot occur.

Preventing Fertilization: It may also work by preventing sperm from reaching and fertilizing an egg that has already been released.

Altering the Uterine Lining: It may change the lining of the uterus to prevent a fertilized egg from attaching (implanting), although its main effect is believed to occur before fertilization.

Plan B is an emergency contraceptive and is not the same as an abortion pill. It will not work if a person is already pregnant, and it cannot end or disrupt an established pregnancy. Because it works by preventing the start of a pregnancy, it is most effective when taken as soon as possible after unprotected intercourse.

Question 4

What are the active ingredients in Plan B?

Accepted Answer

The active ingredient in Plan B is Levonorgestrel .

Question 5

What are the side effects of Plan B?

Accepted Answer

Common side effects of Plan B may include:

Nausea

Abdominal pain

Fatigue

and others.

Always consult with a healthcare professional about potential side effects.

Question 6

What drug class is Plan B?

Accepted Answer

Plan B belongs to the emergency contraceptive drug class.

Question 7

What is the dosage of Plan B and how do I take it?

Accepted Answer

How to Take

This medication is taken by mouth as a single tablet. It can be taken at any time during the menstrual cycle. The tablet can be swallowed with or without food.

Timing for Effectiveness

For the medication to work most effectively, it should be taken as soon as possible after unprotected sex or the failure of another contraceptive method. While it is intended for use within a specific timeframe after the event, its ability to prevent pregnancy is highest when taken immediately and decreases as more time passes.

Special Considerations

Vomiting: If you vomit within two hours of taking the dose, contact a healthcare professional. You may need to take another tablet to ensure the medication is effective.

Follow-up: If your next menstrual period is delayed by more than one week, you should take a pregnancy test and follow up with a healthcare provider.

Ongoing Contraception: This medication is for emergency use only and does not provide long-term protection against pregnancy. You should continue using your regular method of birth control or start a new method immediately after use.

Question 8

Is Plan B safe during pregnancy and breastfeeding?

Accepted Answer

Pregnancy

Plan B is intended for emergency contraception and should not be taken if you are already pregnant. It is not an abortion pill and will not end a pregnancy that has already begun. If you accidentally take this medication while pregnant, evidence suggests it will not harm the developing fetus or affect the pregnancy.

Breastfeeding

Levonorgestrel, the active ingredient in Plan B, can pass into breast milk. Most healthcare experts consider it safe to use while breastfeeding. To minimize the amount of medication the baby receives, you may choose to take the pill immediately after a nursing session.

If you have questions about the timing or safety of emergency contraception, speak with a healthcare provider.

Question 9

What forms and strengths does Plan B come in?

Accepted Answer

Available Forms

Plan B is provided in the following form:

Oral Tablet: This medication is a tablet designed to be taken by mouth.

The medication is intended for use as soon as possible after unprotected intercourse or a known contraceptive failure.

Question 10

What is the FDA approval status of Plan B?

Accepted Answer

FDA Approval and Availability

The U.S. Food and Drug Administration (FDA) approved Plan B One-Step (1.5 mg levonorgestrel) as an emergency contraceptive. It is available over-the-counter (OTC) without a prescription, and there are no age requirements or identification needed for its purchase.

Approved Indications

The medication is indicated for the prevention of pregnancy following unprotected sexual intercourse or the known failure of a contraceptive method, such as a condom break or missed birth control pills. It is not intended for routine use as a primary form of birth control.

Regulatory Labeling Updates

The FDA has updated the labeling for levonorgestrel emergency contraceptives to clarify the medication's mechanism of action. The updated information specifies that the drug works by preventing or delaying the release of an egg from the ovary (ovulation). According to the FDA, current evidence indicates that the medication does not prevent a fertilized egg from implanting in the uterus and does not terminate an existing pregnancy.

Safety and Warnings

There are no Boxed Warnings or Risk Evaluation and Mitigation Strategies (REMS) associated with this medication. The FDA has determined that the medication is not an abortifacient because it works before pregnancy is established.

Question 11

What should I know about Plan B and effectiveness?

Accepted Answer

Timing and Success Rates

Plan B is intended for use as emergency contraception following unprotected intercourse or birth control failure. Its effectiveness is highly dependent on how quickly it is taken. While it is labeled for use up to 72 hours (3 days) after the event, it is most effective when taken within the first 24 hours. Research indicates that Plan B can reduce the risk of pregnancy by approximately 75% to 89% if taken within the 72-hour window.

Factors Influencing Effectiveness

Time Elapsed: The probability of pregnancy increases the longer a person waits to take the medication.

Ovulation: Plan B works primarily by delaying or preventing the release of an egg (ovulation). If ovulation has already occurred before the pill is taken, it may not be effective in preventing pregnancy.

Existing Pregnancy: Plan B is not an abortion pill and will not end an established pregnancy. It is only effective if taken before a pregnancy has begun.

Body Weight: Some studies suggest that emergency contraceptive pills containing levonorgestrel may be less effective in individuals with a higher body mass index (BMI).

Plan B is significantly less effective at preventing pregnancy than regular, long-term birth control methods such as daily oral contraceptives, intrauterine devices (IUDs), or implants. It is not intended for routine use as a primary form of contraception.

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