I have been using fixodent for 18 years and I have thought I had fibromyalgia because of neuro conditions. The doctor has tested me for numerous conditions and finally tested me for zinc and other metals.My medical conditions are awful, and I pray that anyone who has used it or polident please get tested. I have had numerous IV's due to dehydration. It is not fake; I am living proof. I had my stomach scraped to get the excess zinc out and it was not a good feeling.