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Boric Acid Again!

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  • Boric Acid Again!

    I saw the answer in May 2019 re: boric acid, but wanted to ask about 1/2 life and frequency. I know there is no real data with boric acid, and I saw the comment that around 6% is absorbed systemically from a vaginal insertion of a 600 mg dose. I know boron is toxic ingested so I am trying to very careful. Is my math correct in that would equal around a 36mg "dose" in my blood and potentially milk supply? How long would that last?

    I ask because I am currently nursing my 13 month old only once in the evening, before bed. I have been fighting recurrent vaginal infections for 6 months and am at my wits end, I'm ready to quit breastfeeding if I need to to get my infection cleared up, but I'd love to keep the one nursing session through this winter and and flu season if I could.

    I am wondering if I did a boric acid suppository immediately after nursing in the evening, and then went 24 hours before nursing again-- do you think whatever boric acid was in my milk supply would be out by then? How long would be a "safe" time to wait to breastfeed again if I wanted to ideally have none left in my milk supply?

    Thank you so much, I am so glad this forum exists.

  • #2

    boric acid half life is 10.5 hours. If you used it following the evening breastfeeding, levels in milk would be lower, but I'm not sure how low. I really doubt that at 13 months your infant is getting enough milk to produce much of a dose of boric acid...but who knows for sure.

    Sorry, I can't give you more data but we simply don't know anything.

    Tom Hale Ph.d.