Is my copper IUD causing recurrent BV?

Author: Aunt Vadge
Qualified Naturopath | BHSc(N)

Last reviewed: July 2, 2026

Hi Aunty Vadge,

I have a question about the copper IUD and recurrent BV. I got my copper IUD in January, and I’ve had persistent BV ever since — treated with antibiotics in February, back in April (I tried tea tree and coconut oil suppositories), worse by October so antibiotics again, and now it’s back.

Before the IUD, I’d had maybe one BV in my whole life. Is there a correlation? I’m scared my IUD has caused a more permanent dysbiosis that can only be fixed by removing it. Should my treatment be different because of this?

Thank you,
G
Age 26, USA

Dear G,

Your instinct is correct — the timing isn’t a coincidence. There’s a real, documented link between IUDs and recurrent BV, and going from one BV in your whole life to relentless BV the moment your IUD went in is a textbook example, so well spotted.

The mechanism explains why antibiotics keep failing you: the IUD’s smooth surface is a perfect anchor point for a BV biofilm, a protected bacterial colony that sits on the device as a permanent reservoir, and antibiotics only kill the free-floating bacteria — they can’t penetrate the biofilm.

So each course clears your symptoms briefly, the biofilm re-seeds, and you’re back to square one. That’s your whole pattern, right there.

The reassuring part is that this isn’t necessarily permanent, and you very likely don’t have to lose your IUD. The goal isn’t to keep killing bacteria — it’s to evict the bad biofilm and grow a healthy lactobacillus one on the device instead, because once protective bacteria colonise the IUD surface, the BV stops recurring and you keep your contraception.

That’s why I’d steer you toward a lactulose-and-probiotic approach rather than more antibiotics: it’s about rebuilding the right biofilm, not just stripping everything back again. Our free Killing BV guide walks through it, and you can get personal help any time in the free support section.

If you’ve truly thrown everything at it and it still won’t shift, the fallback is to have the IUD removed, clear the BV, get three clean symptom-free months, then have a fresh IUD placed — a true reset — but try the biofilm-rebuild route first, because many women clear it with the device still in.

There’s more on the impact of an IUD on vaginal bacteria, and on whether you need to remove it before the BV program, if you’d like to read around it.

Best,
Aunt Vadge

This is general information based on current research and our clinical experience, not a substitute for personalised medical advice.