Personally, I wouldn't take them. I DID try Metabolite (a Metabolife knockoff). They made me feel sick. The thyroid warning is basically for those with hyperthyroid, because these kinds of suppliments up your metabolism. I asked my doctor about that. You might want to ask your doctor if there is a drug interaction between these products and your medication.

HOWEVER, anything with ephedrine can cause psychological side effects. They have been banned by the NFL. My mother took ephedrine based products and they made her quasi-suicidal. Then she read an article and saw where ephedrine can cause psychosis in some people. I am not sure if the products you mentioned are made with ephedrine, but please be careful.

Paleoanth