Stay away from clen. It's effects are minimal, and it stimulates the beta receptors in your heart. It's not good for your heart. Diet, T3/T4 combo, test, and GH is all you need to get lean.
I'm sorry but this post is teetering on fear mongering combined with irony and inaccuracy.
First of all, clenbuterol is heavily studied and there is no evidence whatsoever directly linking it to heart problems. In fact, if you review case studies of those who accidentally (or purposefully) overdosed on clenbuterol and wind up in the ER, it is often doses in the grams. Yes grams, not the micrograms that bodybuilders take...
A lot of this fear mongering tends to come from animal (rodent) studies ...but again, we are taking about rodents taking the equivalent of grams/day so not really something that can be translated to our realities.
The inaccuracy stems from the fact that clenbuterol is VERY potent at stimulating lipolysis, particularly when combined with compounds that sensitize the β2 pathway to agonists (think thyroid, GH, and to a lesser degree AAS).
Now, the irony is that you advise not using clenbuterol because it is "not good for your heart" but then proceed to recommend exogenous thyroid, growth hormone, and supraphysiological testosterone? All three of these have more concrete links to effects on the heart than clenbuterol does...1. Burniston JG, Ng Y, Clark WA, Colyer J, Tan LB, Goldspink DF. Myotoxic effects of clenbuterol in the rat heart and soleus muscle. J Appl Physiol (1985). 2002 Nov;93(5):1824-32.