OK, I am starting this thread because I have been asked on a number of occasions... "What is the difference between FINAFLEX's 1-ANDRO and EPI-V, they both appear to be Androsterone?" I have asked our research and development team here at FINAFLEX as well as dug around and did a little research on my own and here is what I have come up with....
OK, I'm glad you asked me question actually, because at first glance EPI-V does appear to be 1-Androsterone, but it is not... Our 1-ANDRO is 1-Androsterone Androsterone - Wikipedia, the free encyclopedia, but our EPI-V is Androstanolone File:Androstanolone.svg - Wikipedia, the free encyclopedia, a completely different compound according the our manufacturers.
1-ANDRO = 3-hydroxy-5alpha-androst-1-en-17-one
EPI-V = 3alpha-Hydroxy-5-alpha-androstan-17-one
Now having some really good Chemistry background myself, if you look at the pictures of the compound (structurally) Androsterone & Androstanolone (via my Wikipedia links) they appear to be identical, where I think the major difference lie personally is a couple of things: 1) EPI-V is 3alpha-hydroxy vs. 1-ANDRO just being 3-hydrox, 2) the addition of the 1-en in the 1-ANDRO, and finally 3) 1-ANDRO has Bergamottin (grapefruit extract) which acts as a pretty serious amplifier to the Androsterone (making it stronger and better for overall strength and weight gain).
Also, you have to take into account the the addition of the cortisol inhibitor blend & the stimulant & shredding matrix that is present in our EPI-V and not in our 1-ANDRO, these additional compounds will slightly hinder the massive weight gains compared to the 1-ANDRO, but will help cut excess water, increase the fat burning potential of taking a anabolic product, and obviously eliminate any and all water bloat / retention. Therefore making the 1-ANDRO our go-to product for the hard-gainers and/or someone looking to run a mass cycle and our EPI-V our go-to product for the easy gainers that have a tendency to hold some extra fat, but don't want to sacrifice hard earned muscle in order to drop that hard to lose fat, and of course anyone trying to cut down and shred up for a show or to just look good for the summer.
I hope this answers all your questions. All I can say is EPI-V worked very well for me, I am an easy gainer, but always have that tendency to hold on to the extra fat, so it did exactly what I was hoping it would do, I dropped all the fat I wanted to drop during my cut and amazingly enough I gained 1Lb of lean muscle during that cut, that is awesome in my book, I'll take that any and every day of the week!!!