Can I Take Black Garlic with Emergency Contraceptive Pills? - Obstetrics and Gynecology

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Emergency contraceptive pill


Hello, doctor.
May I ask if it is safe to take black garlic while using the oral contraceptive pill (Alesse)? Will this affect the effectiveness of the contraceptive? Or is it sufficient to wait two hours before taking it? Thank you for your help.

Q, 20~29 year old female. Ask Date: 2023/08/30

Dr. Cao Guotao reply Obstetrics and Gynecology


Hello, it generally does not have an impact.
Wishing you good health.

Reply Date: 2023/08/30

More Info


When it comes to the interaction between black garlic and emergency contraceptive pills, there are a few important points to consider. Black garlic, which is essentially fermented garlic, is often praised for its health benefits, including antioxidant properties and potential cardiovascular benefits. However, its interaction with medications, particularly hormonal contraceptives, is not extensively studied.

Emergency contraceptive pills (ECPs), such as the one you mentioned (likely referring to a brand like Ella or Plan B), work primarily by delaying ovulation. They contain hormones that can affect the menstrual cycle and prevent pregnancy after unprotected intercourse. The concern with taking any supplement or herbal product alongside ECPs is whether it could potentially alter the effectiveness of the contraceptive.

Currently, there is no strong evidence to suggest that black garlic directly affects the efficacy of emergency contraceptive pills. Most studies on herbal supplements and contraceptives focus on more common herbs like St. John's Wort, which is known to induce liver enzymes that can decrease the effectiveness of hormonal contraceptives. Black garlic does not have a similar profile and is not known to have such interactions.

However, it is always wise to err on the side of caution. If you choose to take black garlic while on emergency contraceptive pills, it is advisable to space them out, as you suggested. Taking them two hours apart should minimize any potential interaction, although the risk is likely low.
Additionally, it's important to consider the overall context of your health. If you have any underlying conditions or are taking other medications, it would be prudent to consult with a healthcare provider. They can provide personalized advice based on your medical history and current health status.

In summary, while there is no significant evidence to suggest that black garlic will interfere with the effectiveness of emergency contraceptive pills, it is always best to consult with a healthcare professional for tailored advice. If you have further concerns or experience any unusual symptoms after taking both, do not hesitate to reach out to your doctor. They can provide the most accurate information and guidance based on the latest research and your individual health needs.

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