Managing Emergency Contraceptive Pills After Vomiting: What to Do Next? - Obstetrics and Gynecology

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Vomiting twice after taking emergency contraception?


Hello, Doctor.
On April 9th, I took the fourth pill of my 21-day contraceptive regimen at 11 PM.
However, around 2 AM, I experienced vomiting and diarrhea.
After vomiting, I took an additional pill.
Then, at 4 AM, I vomited and had diarrhea again, and I took another pill (so I took two pills in the early morning of April 10th).
What should I do next regarding my medication? Should I continue taking the pills as normal?

Xiao Ji, 20~29 year old female. Ask Date: 2022/04/10

Dr. Cao Guotao reply Obstetrics and Gynecology


Hello, just continue eating normally and finish your medication.
Wishing you good health.

Reply Date: 2022/04/10

More Info


When managing emergency contraceptive pills (ECPs) after experiencing vomiting and diarrhea, it’s important to understand how these conditions can affect the efficacy of the medication. ECPs, such as those containing levonorgestrel or ulipristal acetate, are designed to prevent pregnancy after unprotected intercourse or contraceptive failure. However, their effectiveness can be compromised if they are not absorbed properly due to gastrointestinal disturbances.

In your case, since you took your fourth pill of the cycle and then experienced vomiting and diarrhea shortly thereafter, here are some key points to consider:
1. Timing of Vomiting: If you vomited within two hours of taking the ECP, there is a chance that the pill may not have been fully absorbed into your system. In such cases, it is generally recommended to take another dose as soon as possible. Since you vomited again after taking a replacement pill, it is advisable to continue taking the ECPs as directed, but you should also consider the timing of your symptoms.

2. Diarrhea Considerations: Diarrhea can also affect the absorption of oral medications. If you experienced diarrhea that was severe or prolonged, it may be wise to consult with a healthcare provider about whether you should take an additional dose of the ECP. Generally, if diarrhea occurs within a few hours of taking the pill, it may not have been fully absorbed.

3. Continue the Regimen: After the initial doses and considering your symptoms, you should continue taking your ECPs as per the prescribed schedule. If you have already taken two extra doses due to vomiting, do not take more than the recommended amount for the cycle. Follow the instructions on the package or those given by your healthcare provider.

4. Consult a Healthcare Provider: Given the circumstances, it is advisable to reach out to a healthcare provider for personalized advice. They can assess your situation and may recommend additional measures, such as taking a different form of emergency contraception if necessary.

5. Monitor Your Symptoms: Keep an eye on your symptoms. If vomiting or diarrhea persists, or if you experience any other concerning symptoms, seek medical attention. It’s important to ensure that you are not dehydrated and that your overall health is stable.

6. Follow-Up: After this episode, it may be beneficial to discuss with your healthcare provider about your contraceptive options moving forward. If you find that you frequently experience gastrointestinal issues after taking medications, there may be alternative methods of contraception that could be more suitable for you.

In summary, after experiencing vomiting and diarrhea following the intake of emergency contraceptive pills, continue with your regimen while monitoring your symptoms closely. If you have any doubts or if your symptoms persist, don’t hesitate to consult a healthcare professional for further guidance. Your health and well-being are paramount, and a healthcare provider can offer the best advice tailored to your specific situation.

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Dr. Cao Guotao reply Obstetrics and Gynecology
Hello, I have responded to your question. Wishing you good health.

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