I have tried it myself and i liked it, seemed to recover a little faster and hypothyroidism has ran in my family. It also felt like it "gave me a boost" so to speak as well. No negative side effects either, have been using it since.
you probably would be interested in Need2slin ... follow the directions on the bottle. good way to use it before a high carb meal take it to store nutrients into your muscles instead of turning it to fat