I ordered both:
Irwin Naturals, Advanced Yohimbe-Plus, 120 Softgels
and
Now Foods, Men's Virility Power, 120 Capsules
Not sure which one or both but between the two a noticeable difference. Duration, rigidity and quickness to erection is noticeably better. It's not an artificial Viagra feeling either. Just a wow, I haven't been able to hang a towel since I was 20 kind of change.

Hate to say it but unless you're willing to spend coin for a good multi-vitamin in the long run you're waisting money. Large tablet that is immediately noticeable in the urine. Noticeable general feeling of good health effect a good vitamin should produce.

Great price for actual D3. My favorite brand too Source Naturals. Smaller than I expected, .5" long narrow clear capsules with white power. Read article about the lack of D3 in diet. I started with 10,000 daily for a month to build up then cut back to 4,000 daily. I did not get a specific D3 test but with my diet I didn't have to waste my money. I knew I was or would be deficient. Easy and cheap way to solve a serious problem of D3 deficiency.

I ordered both:
Irwin Naturals, Advanced Yohimbe-Plus, 120 Softgels
and
Now Foods, Men's Virility Power, 120 Capsules
Not sure which one or both but between the two a noticeable difference. Duration, rigidity and quickness to erection is noticeably better. It's not an artificial Viagra feeling either. Just a wow, I haven't been able to hang a towel since I was 20 kind of change.