t3 is a thyroid medication..your thyroid controls many different functions in the body..one being your metabolism...and yes it is used to cut..
protein synthesis...
t3 is not something to take lightly...you`ll want to do alot of research before you dig in....it is possible to fuck up your thyroid and have to take medication for life...if your family has a history of thyroid problems I definitely wouldn`t touch..
keep in mind I`m not a t3 expert.I have taken it but by no means an expert.
another rule of thumb is never run t3 without some kind of juice..it will eat muscle just as fast as it will eat fat...
hope this helps bud...do some research..