Erections

Erections refers to the ability to achieve and maintain and erection as well as its rigidity. Many supplements catering towards erectile dysfunction are said to possess these pro-erectile properties.


Research analysis by and verified by the Examine.com Research Team. Last updated on Apr 29, 2017.

Human Effect Matrix

The Human Effect Matrix looks at human studies (it excludes animal and in vitro studies) to tell you what supplements affect erections

Grade Level of Evidence
Robust research conducted with repeated double-blind clinical trials
Multiple studies where at least two are double-blind and placebo controlled
Single double-blind study or multiple cohort studies
Uncontrolled or observational studies only
Level of Evidence
? The amount of high quality evidence. The more evidence, the more we can trust the results.
Outcome Magnitude of effect
? The direction and size of the supplement's impact on each outcome. Some supplements can have an increasing effect, others have a decreasing effect, and others have no effect.
Consistency of research results
? Scientific research does not always agree. HIGH or VERY HIGH means that most of the scientific research agrees.
Notes
Panax ginseng
All comparative evidence is now gathered in our ​Supplement Goals Reference.
The evidence for each separate supplement is still freely available ​here.
Yohimbine  
Coenzyme Q10  
Eurycoma Longifolia Jack  
Maca  
Tribulus terrestris  
Ashwagandha  
Butea superba  
Dehydroepiandrosterone  
Saffron  
Citrulline  
L-Carnitine  
Pycnogenol