Nancy, I experienced a metallic taste for several months in the early 90's. This was at a time when I had been on Sinemet as well as an agonist and eldepryl for several months. I did not change medications during this time period........the taste seemed to just disappear much as it had arrived.......no apparent change in anything to trigger the beginning or the end. Occasionally I have the "taste" recur........have never found a link to coincide with it. Only problem seems to be the "taste" associated with it. Rita Weeks 55/10