I've been taking metronidazole (flagyl) for 9 days now for bacterial vaginosis. I have one day left. I have an AWFUL taste in my mouth 24/7. It is horrible! I know this drug can cause a metallic taste but I wouldn't say this was metallic. It's hard to describe, almost more like sour milk. Nothing I eat tastes right. I have to chew gum a lot or I just can't stand it! I am sure hoping it goes away when I stop the medicine. I have so much mucus in my throat and I think I am refluxing more while on this drug. Just wondering if anybody else has experienced this. Could the horrid taste just be from the reflux?