for t3 I have used cytomel and cynomel, I did not find either one useful at all.
I kept the diet the same during and after.
I think that my body just is more resistant to fat loss than most people.
I made a big booboo in my early days of bodybuilding, I believed everything i read. In those days, (late 80's early 90's) no one took steroids (wink, wink). they just ate 10,000 calories a day and worked out like madmen.
so, thats what I did... for a year. I gained about 80-100 pounds
(started at 125lbs, 28in. waist) I thought I was huge! till I looked at a pic of myself... I was huge, but not the way I wanted. I was FAT! (220lbs, 38in. waist). it has taken me a LONG time to recover.
I have managed to gain significant muscle over the years and to lose fat. finally down to about 180 with 32in. waist.
you see, you need to do your own research and not rely on everything you read.
t3 set me back, never helped me progress.