Have you done your research on T3 and clen use?
If you have what are you thinking of taking?
A non-suppressive dose of T3 (12.5mcg) day may be good to start and stay at. If results are not what you are looking for, you might want to try and pyramid your dose of T3. However, make sure you CYLE it and READ on how to cycle T3. This stuff is nothign to play with. Serious side effects such as temporarily (as well as permanently) shutting down your thyroid is not worth losing a couple pounds imho. Also, if your thyroid is temporarily "out-of-service" you are pretty much screwed. You will begin to store body fat and a nice rapid rate. ALso, T3 (triidothyronine) and T4 (thyroxine, the other major thyroid hormone) control all metabolic activities in your body. Your metabolism isnt just how fats you burn off cals, its the speed at which your entire body works at. every cell's metabolic activity in your body is controlled by thyroid hormones, so be safe.
Clen- I actually like clen. the first 2 weeks it honestly didnt do anything for me, but once i started my second 2 weeks of clen (you are suppose to cycle it, i do 2 weeks on 2 weeks off with NYC in my off period) i really started to burn up and started to drop the weight.
But remember, no matter what drugs you decide to use, diet IS the key. if i wasnt dieting while on the clen and T3, i would not have lost the 16lbs that i did.
Also, you might wanna stay on a good Anabolic Androgenic Steroids (AAS) such as Anavar (var), tren, Winstrol (winny), or boldenone while cutting to maintain muscle. hope this helps somewhat