Damn. Well that sucks. I would understand if the lack of effectiveness is due to one's acquired tolerance to the stimulants found in the old Venom, as usually is the case with these products (for those that were taking the old Venom and switched to the new version without giving your body time to "reset" its response to stimulants, thus not feeling the same desired effect, and ultimately rendering the new product as ineffective, while in reality even the old Venom would not work as desired). Unfortunately for ALRI customers, I beleive that is a very narrow and unlikely scenario, since users like you have both versions to compare.
Then of course, one cannot rule out the popular mindset of "New and Improved" versions of products are always junk, as it has been proven time and time again, meaning that the new Venom IS in fact better, and one's lack of response to its effects are purely unconscious rooted by this propaganda... then again, this is also unlikely.