I would suggest brush teeth and listerine mouthwash afterwards. Like I said earlier, if you take flagyl for a period of time your body adjusts, and you do not notice the taste. I had the same metallic taste everyone else has mentioned when I started taking it in 1995, but not anymore. My body/taste buds probably recognizes it and learned to adapt because it helps my pouch. Normally nobody likes the taste of food that is too salty, but when your body needs salt it is a different story and you start to crave salty foods. I think with flagyl my brain instructed my taste buds to tone down the reaction. Natural adaptation.