My tongue has a metallic taste and a slight tingling. My ability to taste is unaffected, as is my appetite. I am a white male, 61 years old, 6'0", 313 lbs. I received a "shingles" shot in October 2015. These symptoms began approximately 6 weeks after receiving the shot and I believe that there is a connection. I take Metformin, Levothyroxine, Lisinopril, Atenolol, and Simvastatin. The metallic taste seems stronger today than it has on other days.
-Andy Weaver