Metronidazole
"I'm on day 3 of 7, 3x a day. Have taken every pill straight after a meal, & get a mouthful of water before putting pill in mouth - no taste at all other than the 1st time when it wasn't even that bad anyway, just tasted like when you accidentally leave a paracetamol in your mouth too long! As for side effects, I've had a headache pretty much every day but nothing bad that paracetamol won't help and very slight continuous stomach ache (nothing crippling!). No diarrhea or vomiting here, and infection slowly subsiding. I definitely recommend, the side effects for me simply aren't bad enough to stop you taking it at the expense of not treating your bacterial vaginitis."