Dear Barb and all, Zinc deficiency is associated with loss of taste; also, zinc may help alleviate cold symptoms. Zinc is also necessary to keep the immune system strong. However, too much zinc can actually weaken the immune system; and zinc is associated with Alzheimer's disease, although in what way is not clear. I'm not sure exactly how much actual zinc was in the 45-mg zinc sulfate tablets (45 mg of zinc, or 45 mg of zinc sulfate?). In general, though, I don't believe it's recommended to take supplements of much more than the RDA (15 mg/day) on a prolonged basis. I recommend to nearly all my clients a supplement such as Centrum (Centrum Silver if over age 50), which contains the RDA for zinc. Best regards, Kathrynne Barbara Mallut wrote: > In an attempt to confirm this in a controlled setting, > the group randomly assigned 18 head and neck > cancer patients to take a placebo (''dummy'' pills) > or 45 milligrams of oral zinc sulfate three times a > day at the onset of any taste abnormalities related > to radiotherapy. The patients took the tablets for up > to 30 days following treatment. -- Kathrynne Holden, MS, RD "Nutrition you can live with!" Medical nutrition therapy http://www.nutritionucanlivewith.com/ Tel: 970-493-6532 // Fax: 970-493-6538