What pregnancy, fertility, and contraception questions should be discussed before Zepbound?

Discuss stopping Zepbound 2 months before a planned pregnancy, its potential effect on oral birth control, and the need to report a pregnancy immediately.

Pregnancy Planning: The Two-Month Washout Period

Zepbound is not recommended for use during pregnancy. Due to a lack of data in humans, potential risks cannot be ruled out. Animal reproduction studies showed that tirzepatide, the active ingredient in Zepbound, could cause fetal abnormalities or harm at certain exposure levels.

The U.S. Food and Drug Administration (FDA) prescribing information advises that individuals who can become pregnant should discontinue Zepbound at least two months before they plan to conceive.

This two-month "washout period" is recommended because tirzepatide has a half-life of approximately 5 days. It takes multiple half-lives for the drug to be fully cleared from the body, and this timeframe helps ensure minimal exposure to a developing fetus.

Before starting treatment, discuss your family planning goals with your physician. If you are already taking Zepbound and decide you want to become pregnant, create a plan with your doctor to safely discontinue the medication in advance.

Interaction with Oral Birth Control Pills

Zepbound works in part by slowing down gastric emptying, which is the rate at which food and medicine leave your stomach. This can affect the absorption of orally administered medications, including birth control pills.

This interaction could potentially decrease the effectiveness of oral hormonal contraceptives, increasing the risk of an unplanned pregnancy. The impact is most significant when starting the medication and during dose increases.

The manufacturer advises patients using oral contraceptives to add a barrier method of contraception, such as condoms, for 4 weeks after starting Zepbound and for 4 weeks after each dose escalation.

Alternatively, you and your physician may discuss switching to a non-oral contraceptive method. Options like an intrauterine device (IUD), contraceptive patch, vaginal ring, or injection are not affected by changes in gastric emptying. For more details on medication interactions, visit other GOAL.MD Answers.

What to Do If You Become Pregnant on Zepbound

If you learn that you are pregnant while taking Zepbound, you should stop taking the medication immediately and contact your healthcare provider for guidance.

Do not panic. The most critical step is to inform your physician, who can advise you on the next steps for your prenatal care. Early communication ensures you receive the appropriate support and monitoring.

Your physician may also encourage you to participate in a pregnancy surveillance program. Eli Lilly and Company, the manufacturer, maintains a registry to collect information about pregnancy outcomes in individuals exposed to Zepbound. This data is vital for improving future safety recommendations.

Considerations for Breastfeeding and Male Fertility

It is not known if tirzepatide passes into human breast milk or what effect it may have on a nursing infant. The decision to use Zepbound while breastfeeding should be made in consultation with your doctor, carefully weighing the potential benefits against the unknown risks.

For men, studies on tirzepatide in animals did not find adverse effects on sperm or male fertility. However, human data is not available to confirm these findings.

It is well-established that significant weight loss achieved through any means can positively impact fertility in both men and women who have obesity-related subfertility. This is a separate effect from any direct action of the drug itself and should be discussed with your physician.

Your Pre-Zepbound Contraception & Fertility Checklist

To ensure a safe and effective treatment journey, use this checklist to guide the conversation with your physician before starting Zepbound:

1. Pregnancy Plans: Inform your doctor about any plans to become pregnant within the next year to establish a timeline for stopping the medication.

2. Current Contraception: Discuss your current birth control method. If it's an oral pill, ask about the need for a backup barrier method or the option of switching to a non-oral form.

3. Action Plan: Ask, "What is the plan if I miss a period or suspect I am pregnant while on this medication?" to ensure you know exactly what to do.

4. Fertility Effects: Inquire about how weight loss may impact your overall fertility, especially if you have a history of conditions like Polycystic Ovary Syndrome (PCOS).

Bottom Line

Open communication with your physician about fertility, contraception, and pregnancy is essential before starting Zepbound. The key safety protocols are to stop treatment two months before planned conception and to manage the drug's interaction with oral birth control.

If you become pregnant while on Zepbound, stop the medication and notify your doctor immediately. This ensures you and your pregnancy are monitored appropriately.

This article is for informational purposes only and does not constitute medical advice. Always consult a physician-supervised telehealth practice for personalized guidance regarding your health and treatment plan.

Generated from GOAL.MD's physician-reviewed source library. This page has not received its own physician review. Physician-supervised telehealth. More at goal.md/answers.