When I started taking T3, it was with clen of course. It worked well. I dopped the clen and just stayed on the T3 because I liked the effect of leaness with my on-target diet, of which I am still on today from 5 years ago. Everytime I thought of wanting to come off T3, I thought about the rebound effects that may happen when your thyroid is shut down and I didn't want to go thru them so I just stayed on. It's such an easy, cheap research chem to get so cost and availability wasn't a factor. I really don't even want to try to see if my thyroid comes back. For what, just cause the doctor asked me too? People stay on thyroid meds for life, right? I just consider it part of my HRT program at age 41, along with my prescribed test cyp and my peptide regime. I was just wanting to know if anyone else went as long as me and tried to get the ol thyroid back and beating.