You don't need an "anti e", you need an "anti p". Tren does not aromatize into estrogen, but it does make the body release progesterone, same with Deca. The best thing to use to prevent pregesterone-induced gyno is a dopaminergic like bromocriptine. Google "Tren deca dopaminergic" and you should find your answers there. I've heard that the only non-dopaminergic that might work in your case might be Letro, but I've never read a document on it...
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