After all of my experimentation with supplements and logically inducing/deducting from stacks, I have my mixture of products that works extremely well for me. I have tried these for the sole purpose of sex drive and/or erection hardness:
RPM and Drive stack
Activate Extreme
Jungle Warfare
Perform (AI Sports) and Free Test (AppNut)
Test Drive (EST) and Propadrol (non-steroidal)
Primal Male and Blueprint (MAN)
Erase (PES)
White Blood and Blue Up *stim free*
Arginine (half a dozen variants) and other NO boosters primarily containing: citrulline malate, GPLC (4.5 gram dosing), beta alanine, norvaline, etc.
research chems and Rx: Cialis, Viagra, Levitra, carbergoline, Mirapex (pram Rx from doctor), Survector
These all did something. Some more than others.... but for the most part I was trying to cover up for a side effect of some underlying ailment. AndroDrive and Testforce 2 = BOOYA! I don't need to time some powder drink or pills for sex like it's a pre-workout preparation and I'm ready to go whenever. After being on AndroDrive for a good 10 days, I notice that my sex drive (drive in general) goes up and then I have messed around with doses, timing, and such with Testforce 2 now for almost 5 months and I find that taking 2 scoops RIGHT upon waking will have me good to go for the entire day, after I've been taking it for 4-5 days as it builds up in my system.
I had done a process of elimination for a large stack of supplements I was running and I really cut a ton of things out and after narrowing it all down, aside from the basics... (vitamins, minerals, additional protein if needed)... AndroDrive, Testforce 2, and a lot of CoQ10 really shines.