how long can i run synthroid? stacking it w/ hgh

[s.norman]

i know that normally u cycle thyroid meds...but while using hgh do u still need to cycle it??

[scotty51312]

synthroid is t4 which converts into t3 in the body, unfortunatley the body has a feeback loop that stops the conversion when there are sufficient levels of t3. So unless you're t3 deficient synthroid is pretty worthless for cutting. T3 is the hormone that plays the active role in metabolism so you want cytomel if you're trying to cut, and to answer your question some people run t3 for months at a time with no damage to thier natural thyroid hormone output. T3 is usually run in a pyramid dose depending on your goals. T3 burns weight indescriminatley (meaning it burns muscle as well as fat). So without AAS support you will loose wieght but you'll loose muscle mass as well. I've seen people on t3 only go from being muscular looking bigger guys to looking flat in a matter of a few months