An Israeli study1, carried out in Tel Aviv in 1999 at the Sourasky Medical Centre’s, Department of Urology, confirmed a positive correlation between erectile dysfunction and nitric oxide deficiency (which is important because it dilates the blood vessels in the male body and thus enables erection in men). Men who have problems with erectile dysfunction due to a lack of nitric oxide in the body can significantly improve their sexual function by consuming L-arginine. Another study conducted in New York2 also confirmed that L-arginine improves sexual function in men with mild erectile dysfunction.
A study conducted in Italy in 2009 on men with mild erectile dysfunction3 found positive effects of maca on erectile dysfunction. Men who consumed maca achieved better results than those in the placebo group.
A study conducted in Switzerland 4 in 2012 showed that the consumption of palmetto in older men with enlarged prostate and erectile dysfunction has a very positive effect on the elimination of erection problems.
A study by the Department of Urology at the University of Hong Kong5 found that men with moderate and high erectile dysfunction and dyslipidemia with niacin use can greatly improve their sexual function.
The main influence of roseroot on the problems associated with erectile dysfunction is that it increases energy and stamina 8,9,10, which contributes to longer sexual intercourse. A study in Newcastle11 confirms that energy and endurance are also improved by guarana, which, in addition to physical impairment, also reduces mental fatigue and increases cognitive performance.
A study carried out in 2002 by the Department of Physiology at the University of Illinois’ College of Medicine found that ginseng enables better erection by accelerating blood circulation and releasing erectile tissue.12 The positive effect of ginseng was confirmed by many other studies, as men with ginseng had fewer problems with erectile dysfunction and were more sexually aroused than men in the placebo group.13,14,15,16
A 2011 study in Brisbane
6 also confirmed the positive influence of Fenugreek on the physiological properties of the libido. Men who consumed Fenugreek had a stronger orgasm and were more sexually aroused than the men in the control group. Besides increasing arousal and preventing erectile dysfunction, consuming Tribulus also helps.
7
1 Chen J, Wollman Y, Chernichovsky T, Iaina A, Sofer M, Matzkin H.; Effect of oral administration of high-dose nitric oxide donor L-arginine in men with organic erectile dysfunction: results of a double-blind, randomized, placebo-controlled study., BJU Int. 1999 Feb;83(3):269-73.
2 Zorgniotti AW, Lizza EF.; Effect of large doses of the nitric oxide precursor, L-arginine, on erectile dysfunction. Int J Impot Res. 1994;6:33–35.
3 Zenico T, Cicero AF, Valmorri L, Mercuriali M, Bercovich E. Subjective effects of Lepidium meyenii (Maca) extract on well-being and sexual performances in patients with mild erectile dysfunction: a randomised, double-blind clinical trial. Andrologia. 2009;41(2):95–99. doi: 10.1111/j.1439-0272.2008.00892.x.
4 Suter A1, Saller R, Riedi E, Heinrich M.; Improving BPH symptoms and sexual dysfunctions with a saw palmetto preparation? Results from a pilot trial., Phytother Res. 2013 Feb;27(2):218-26. doi: 10.1002/ptr.4696. Epub 2012 Apr 23.
5 Ng CF, Lee CP, Ho AL, Lee VW.; Effect of niacin on erectile function in men suffering erectile dysfunction and dyslipidemia., J Sex Med. 2011 Oct;8(10):2883-93. doi: 10.1111/j.1743-6109.2011.02414.x. Epub 2011 Aug 2.
6 Steels E, Rao A, Vitetta L.; Physiological aspects of male libido enhanced by standardized Trigonella foenum-graecum extract and mineral formulation., Phytother Res. 2011 Sep;25(9):1294-300. doi: 10.1002/ptr.3360. Epub 2011 Feb 10.
7 Neychev V., Mitev V.; Pro-sexual and androgen enhancing effects of Tribulus terrestris L.: Fact or Fiction., J Ethnopharmacol. 2016 Feb 17;179:345-55. doi: 10.1016/j.jep.2015.12.055. Epub 2015 Dec 28.
8 Battistelli M1, De Sanctis R, De Bellis R, Cucchiarini L, Dachà M, Gobbi P.; Rhodiola rosea as antioxidant in red blood cells: ultrastructural and hemolytic behaviour., Eur J Histochem. 2005 Jul-Sep;49(3):243-54.
9 De Bock K, Eijnde BO, Ramaekers M, Hespel P.; Acute Rhodiola rosea intake can improve endurance exercise performance., Int J Sport Nutr Exerc Metab. 2004 Jun;14(3):298-307.
10 Abidov M, Crendal F, Grachev S, Seifulla R, Ziegenfuss T.; Effect of extracts from Rhodiola rosea and Rhodiola crenulata (Crassulaceae) roots on ATP content in mitochondria of skeletal muscles., Bull Exp Biol Med. 2003 Dec;136(6):585-7.
11 Kennedy DO, Haskell CF, Robertson B, Reay J, Brewster-Maund C, Luedemann J, Maggini S, Ruf M, Zangara A, Scholey AB.; Improved cognitive performance and mental fatigue following a multi-vitamin and mineral supplement with added guaraná (Paullinia cupana)., Appetite. 2008 Mar-May;50(2-3):506-13. Epub 2007 Oct 30.
12 Murphy LL, Lee TJ.; Ginseng, sex behavior, and nitric oxide., Ann N Y Acad Sci. 2002 May;962:372-7.
13 Hong B, Ji YH, Hong JH, Nam KY, Ahn TY.; A double-blind crossover study evaluating the efficacy of korean red ginseng in patients with erectile dysfunction: a preliminary report. J Urol. 2002;168: 2070–3.
14 Choi HK, Choi YJ.; Evaluation of clinical efficacy of Korea red ginseng for erectile dysfunction by international index of erectile function. J Ginseng Res. 2001;25: 112–7. in Korean.
15 Kim SW, Paick JS.; Clinical efficacy of Korean red ginseng on vasculogenic impotent patients. Korean J Androl. 1999;17:23–8. in Korean.
16 de Andrade E, de Mesquita AA, Claro Jde A, de Andrade PM, Ortiz V, Paranhos M.; et al. Study of the efficacy of Korean Red Ginseng in the treatment of erectile dysfunction. Asian J Androl. 2007;9:241–4.
