Can you drink apple cider vinegar to cure BV? from Medline...
ACV bath treatment for mild cases - Two glasses of raw, unfiltered apple cider vinegar can be added to warm bath water for a whole body soak that helps to reduce levels of bacteria and balance vaginal pH. ... We recommend drinking two tablespoons of apple cider vinegar mixed with warm water every morning.
WARNING! I used cider vinegar in a bath because I had repeating and persistent thrush. I used half the recommended amount and after the bath my vulva was burning - it was on fire! I think that is what contributed to my thrush turning into permanent vulva pain (vulvodynia) that took me 2 years of determination and several treatments to get rid of. When I told my dr about the cider vinegar bath she said she wasn’t surprised - I mean .... vinegar!