Trenbolone binds well to the AR, dianabol does not, hence the type 1 and 11 designation. I believe deca binds well to the AR as well so its also same type as tren, so is adding deca to tren and dianabol a total waste?
Yes, in terms of anabolic effect, adding Deca to trenbolone accomplishes nothing that adding a little more trenblone wouldn’t accomplish.
You still might want to do it though if you
like the effect of Deca on your joints, which might be due to progestagenic activity but that
is pure speculation and there also is some evidence I think that it is not so. It’s always been something of a mystery to me why Deca has this property, but it does.