Should thyroid hormones be used with Clen?
Animal studies have shown that Clen’s effects rapidly fade away. It was hypothesized that the rapid beta receptor down regulation was the cause of this. As thyroid hormones are one of the regulators of those beta receptors, their use while on Clen has been suggested in order to prevent the receptor down regulation. I think it is a mistake. Serious (non-natural) bodybuilders are on thyroid medications most of the year so they are not concerned by this issue. But what about health conscious drug users? Should they stack Clen and thyroid hormones for greater effectiveness? It is true that in order to get lean fast, this is a cheap and very effective stack. But as you stop those drugs, you will have a hard time retaining your lean condition. So, this is a very short term solution. I do not know how rumors of Clen shutting down the user thyroid got started and why scientific research was ignored on that point. Clen (and most beta agonist) tend to increase (not decrease) thyroid activity whi