this metallic taste in your mouth most likely is from acid reflux of stomach acid coming up to the back of your throat.
to control this, you have to eat healthier, avoid spicy foods, sodas, alcohol, fatty meals
and use stomach acid reducing medications like prilosec or pepcid to decrease stomach acid.
regular exercise to improve your abdominal core muscle strengthen can also help keep stomach acid in your stomach.
also avoid laying down for 2 hours after you eat
let me know if you have other questions.
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