1. A multifaceted approach to maximize erectile function and vascular health 
David R. Meldrum, M.D., Joseph C. Gambone, D.O., M.P.H., Marge A. Morris, M. Ed., R.D., C.D.E., Louis J. Ignarro, Ph.D. 
Fertility and Sterility 
Volume 94, Issue 7, Pages (December 2010)
DOI: /j.fertnstert
Copyright © 2010 American Society for Reproductive Medicine Terms and Conditions

2. Figure 1 Factors that promote and inhibit NO production.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2010 American Society for Reproductive Medicine Terms and Conditions

3. Figure 2
The level (mean ± SE) of red blood cell reduced glutathione in men with ED was significantly lower (P<.001) compared with men without ED (14).
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2010 American Society for Reproductive Medicine Terms and Conditions

4. Figure 3
Vasodilatation reflected by peripheral arterial tonometry (PAT) was significantly higher after 5 days of ingestion of flavinol-rich cocoa, and also acutely after a single exposure on day 5 (both P<.01). The increase was almost completely abolished by an inhibitor of NO production, NG-nitro-L-arginine methyl ester (L-NAME) (P<.004) (16).
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2010 American Society for Reproductive Medicine Terms and Conditions

5. Figure 4
In a group of infertile men, a combination of L-arginine and pycnogenol significantly increased semen volume, total sperm, % A motility, and % normal morphology (P<.001) (22). In men with erectile dysfunction, this same regimen significantly increased the serum levels of testosterone (P<.001) (23).
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2010 American Society for Reproductive Medicine Terms and Conditions