Has anyone ever experienced a foul taste like ( aspirin being stuck in your throat) taste all the time ? I've had every gastro test, endoscopy, digestion empyting,. Hp Probe h pylori,celiac , acid reflux, all coming out negative? Ears,Nose throat doc says vitamin defiencey?? Take multi vitamins now, no relief I did come out lactose intolerant but with dairy free diet no relief.Feels like gas is coming up can't explain it.Some times it gets really bad. Help.Getting desperate. Tired of chewing gum for ten months. Any ideas???I'm running out of things to check out. Gastro doc is puzzled also..Thanks a bunch.