10mg cialis every 72 hours and dosing another 10mg before sexual activity FTW
Keeps your penis in the healthiest condition possible because you get a lot of erections.
I also like Viagra a lot, and Levitra.. Levitra at first worked best, now I'd say Viagra works best, followed closely by Cialis which didnt do anything for me before, but now works well.. weird eh?
These drugs will also give you a sickkkk full body pump, ideally Cialis, since it has such a long half-life.

Better erections, better full body pump.. WIN-WIN.
I also like yohimbine HCL.. the studies used 15mg TID and this was all the rage before Viagra came onto the market, it used to be the #1 impotence drug.
PDE-5 inhibitors are far superior but they both act through different pathways so using BOTH is a nice thing to do.. attacking from both sides.
I gotta be honest, I've ordered sooooo much stuff, I've done so many experiments, and at the end of the day, what works is what works, and the PDE-5 inhibitors isn't a multi-billion dollar coporation for nothing, these drugs work, and they work well.