only thing that takes awhile to kick in are slow releasing esters such as Testosterone enanthate or cypionate. also nandrolone decanoate is also real slow acting. the stuff that kicks right away are pretty much all orals and steroids like winstrol and trenbolone. also Test suspension kicks right away because its not attached to an ester. if your impatient your best off using fast acting stuff with short esters and half lifes. such as test prop,nandrolone phenyl-prop, test suspension, trenbolone, winstrol, halotestin. the more patinet users prefer the slow acting gear like Test enanthate and cypionate and nandrolone decanoate.