Using Endometriosis Medication While Breastfeeding: Safety Concerns - Obstetrics and Gynecology

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Use of Atarax during breastfeeding?


Hello, I have been prescribed Danazol for endometriosis by my doctor, who indicated that it should not affect my breastfeeding status.
However, after taking the first pill, I carefully read the information leaflet inside the medication box and discovered that it advises against use during breastfeeding.
Can I still continue to breastfeed? Please assist me with this question, thank you.

Yifen, 30~39 year old female. Ask Date: 2023/05/07

Dr. Huang Yuande reply Obstetrics and Gynecology


In principle, it is not recommended, as breastfeeding itself can suppress endometriosis.

Reply Date: 2023/05/07

More Info


When it comes to using medications for endometriosis, particularly while breastfeeding, it is crucial to weigh the benefits against potential risks. The medication you mentioned, likely a hormonal treatment such as a progestin or a combination of estrogen and progestin, can have implications for both your health and that of your breastfeeding infant.

Endometriosis is a condition where tissue similar to the lining inside the uterus grows outside of it, causing pain and other symptoms. Treatments often involve hormonal therapies that can help manage these symptoms. However, many of these medications are not recommended during breastfeeding due to concerns about their effects on the infant.

The specific medication you referred to, which I assume is similar to "Dienogest" or "Medroxyprogesterone," may have contraindications during lactation. The concern is that these hormones can pass into breast milk and potentially affect the infant. While some studies suggest that the levels of these hormones in breast milk may not be significant enough to cause harm, the lack of extensive research on long-term effects means that caution is warranted.

If your doctor has indicated that it is safe for you to continue breastfeeding while on this medication, it is likely based on their assessment of your specific situation, including the severity of your endometriosis symptoms and the potential risks to your infant. However, it is essential to communicate openly with your healthcare provider about your concerns. If the medication's packaging or accompanying literature advises against its use during breastfeeding, this is a significant point to discuss with your doctor.

In general, the following steps are advisable:
1. Consult Your Doctor: Discuss your concerns about breastfeeding while taking the medication. Ask about the specific risks and benefits in your case and whether there are alternative treatments that may be safer during lactation.

2. Monitor Your Infant: If you continue to breastfeed while on the medication, keep an eye on your infant for any unusual symptoms or changes in behavior. If you notice anything concerning, consult your pediatrician immediately.

3. Consider Alternatives: If your doctor agrees that the risks may outweigh the benefits, inquire about alternative treatments for endometriosis that are considered safer during breastfeeding. Options may include non-hormonal treatments or medications that have a better safety profile during lactation.

4. Stay Informed: Keep yourself updated on the latest research regarding the safety of medications during breastfeeding. Guidelines can change as new studies emerge.

5. Weigh the Risks: Ultimately, the decision to continue breastfeeding while on medication should be made collaboratively with your healthcare provider, considering both your health needs and the well-being of your child.

In conclusion, while your doctor may have deemed it safe for you to continue breastfeeding while taking the medication for endometriosis, it is essential to remain vigilant and informed. Open communication with your healthcare provider is key to ensuring the best outcomes for both you and your baby.

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