I disagree, I have cycled t3 without any negative sides. I can use as little as 12.5mg and see results.
I start clen at 10mcg and run it 2 weeks on, one week off with 2 benedryl everynight in the second and third week.
My t3/clen cycles usually run 8-10 weeks.
I am running a cycle of t3/gh right now. It is great because the gh keeps you from loosing muscle.
If youd like to see a more detailed cycle log, feel free to message me. Good luck!