Breastfeeding After Flunarizine: How Long to Wait?

I would like to inquire about breastfeeding issues?

Hello, I have been taking flunarizine for tinnitus for about a week, one 10mg tablet each night, totaling 8 days.
I would like to know how long after stopping flunarizine I can start breastfeeding.
Thank you for your response.

Ruby, 30~39 year old female. Ask Date: 2021/08/26

Dr. Cao Guotao reply Obstetrics and Gynecology

Hello, if you want to feed earlier, you can do so in about 3-4 days.
Wishing you good health.

Reply Date: 2021/08/26

More Info

When considering breastfeeding after taking flunarizine, it is important to understand both the pharmacokinetics of the drug and the potential implications for the infant. Flunarizine is a calcium channel blocker primarily used for the treatment of migraines and vestibular disorders. It is not typically recommended for use during breastfeeding due to limited data on its safety profile in nursing infants.

Flunarizine has a half-life of approximately 20 to 40 hours, which means that it takes this amount of time for the concentration of the drug in the bloodstream to reduce by half. After stopping the medication, it generally takes about five half-lives for a drug to be eliminated from the body. Therefore, if we consider the longer half-life of flunarizine (around 40 hours), it could take up to 8 days for the drug to be sufficiently cleared from your system.
Given that you have taken flunarizine for 8 days, it would be prudent to wait at least 8 to 10 days after your last dose before resuming breastfeeding. This waiting period allows for the drug to be eliminated from your system, minimizing the risk of exposure to your infant through breast milk.
In addition to the timing, it is also essential to monitor for any potential side effects or reactions in your infant once you resume breastfeeding. Although flunarizine is not known to be excreted in significant amounts in breast milk, caution is always advised when introducing any medication into your system while breastfeeding.

Moreover, it is advisable to consult with your healthcare provider or a lactation consultant before making decisions about breastfeeding after medication use. They can provide personalized guidance based on your specific situation, including any underlying health conditions and the overall health of your infant.

In summary, after taking flunarizine for a week, it is recommended to wait at least 8 to 10 days after your last dose before resuming breastfeeding. Always consult with your healthcare provider for tailored advice and to ensure the safety of both you and your baby.

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