Male NudeThere is some evidence to show that without physical contact with a BV-infected vagina, a male sexual partner’s G. vaginalis infection in the urethra and on the penis will disappear by itself. (See this article discussing the evidence that men with female partners with BV have G. vaginalis on and in their penises.)

Evidence suggests that the bacteria will continue to live in his urethra and on his penis so long as he is exposed to it, which is good news for the male partners of women with BV, because with the use of condoms, the infection goes away most of the time. Most – not all. Men do need to know that there is a very high chance that they have G. vaginalis in their urethra and on the end of their penises though, so use condoms with all sex partners to stop the spread of the infection, via biofilm seed bacteria.

Men may be prescibed antibiotics if their female sex partner gets a BV diagnosis, but this is a stab in the dark – men aren’t tested for G. vaginalis and therefore there is no way of knowing – or effectively using – antibiotics. The biofilm is resistant to antibiotics, so to be sure of elimination of BV, both men and women must effectively address the biofilm. This can be done in a few ways, but because men are not tested, removing the biofilm from the penis is very much an at-home operation, much like all biofilm eradication methods for BV.

There is so little research into BV in men that nobody has yet offered up any sort of treatment at all, bar antibiotics which are still not routine for men. Once a woman treats herself – and has been three months without a flare-up – her partner is very likely to be free from BV without any treatment too, but condoms are necessary in the short-term to prevent reinfection and steps can be taken to help reduce any lingering penile biofilms.

After treating BV, the female vaginal microflora should be very strong after three months if the treatment is successful, but it is advisable to be really careful and don’t go too gung-ho with the semen – and the penis – until it is clear the BV won’t be returning.

Key facts:

  • Condoms stop the spread and reinfection of BV
  • Men’s G. vaginalis infection seems to disappear without contact with a BV vagina, but the time it takes is not known
  • Men can spread different biotypes of G. vaginalis to different women, infecting them (BV can be sexually transmitted)
  • A man can be treated using elements of the Killing BV treatment protocol to make sure the infection is really gone


Killing BV – the definitive way to clean up the mess left by bacterial vaginosis


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