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How soon after vomiting should I take another birth control dose?

This Premium Q&A, reviewed and published, features a real conversation between an iCliniq user and a physician.

Patient's Query

Hello doctor,

I recently started taking compounded Semaglutide for weight loss, but I also use oral birth control. Since beginning the medication, I have experienced increased nausea and occasional vomiting. Could this affect the effectiveness of my birth control? Should I consider switching to a different form of contraception, or is there a way to time my doses to minimize any potential issues?

Kindly help.

Thank you.

Hello,

Welcome to icliniq.com.

I can understand your concern.

I understand your concerns. Nausea and vomiting can indeed affect the absorption of oral birth control, potentially reducing its effectiveness. If vomiting occurs within a few hours of taking the pill, it may not be fully absorbed, which could increase the risk of unintended pregnancy.

Considering alternative contraception methods, such as an intrauterine device (IUD) or a contraceptive implant, may be beneficial, as they are not affected by gastrointestinal issues.

Timing your doses may also help. Taking your birth control pill at a time when nausea is less likely, or using anti-nausea medication, could improve absorption and effectiveness.

Please feel free to book a consultation with me if you would like more detailed information on any of these points or if you have other questions.

I hope this information helps you.

Please let us know if you have any further queries.

Thank you.

Medically reviewed byiCliniq medical review team

Published At June 6, 2025
Reviewed AtJune 9, 2025

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