Esiclene and synthol are very different. Also, Esiclene (Formebolone) is not the same as Caverject (alprostadil) (prostaglandin) even though it seems to be sold as such on the black market. Esiclene is no longer available and has not been available or manufactured for about 20 years. What is sold as Esiclene (simply capitalizing on the name) is Caverject which produces a similar effect, although through a different mechanism. It works by increasing blood flow to the tissue, essentially causing swelling (Which is why it works as a form of ED treatment when injected into the penis). In my experience this lasts only a few hours at best. There is no permenant damage or distortion from Caverject unless it is done daily in large doses, but even then it would be only tissue scaring from frequent injections. It can hurt like hell though at times, which is why the lidocaine (which actually hurts initially more than it helps) is there. Caverject is soluble in bacteriostatic water and comes in a powder like hcg. I have used between 20-60mcg per site for mediocre results. Not worth it in my opinion.
Snythol, on the other hand, is dependant upon long term buildup of triglyceride oils, which causes definate distortion and is truely fake tissue. Synthol will make you look like shit in the long run. Caverject will just make you poor for a day of 0.5" larger biceps.