My experience with Metformin has been that it has changed my taste buds, I have gone of certain foods and drinks, I enjoyed Chinese food, and now find it difficult to find anything I like, I enjoyed fajitas and no longer do, also green peppers, broccolli, and (weirdly) oxidised red wine! I can drink it as soon as the bottle has been opened, then I have a 20 - 30 minute window to drink it, after that it just tastes disgusting! Oh how that makes me mad, I was never a big drinker, but I did enjoy a glass of wine with my Sunday dinner or a special meal.