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Evidence Based Longevity (EBL) Check what I take
Hormonal

Sexual Health & Low Testosterone

Evidence-graded supplements studied for erectile function, libido, and testosterone in men. Grades reflect the strength of the human trial evidence for each specific use, most of this area rests on small or short trials.

Evidence last reviewed October 2026

At a glance

The letters on this page

Six interventions on this page. Three carry a letter; three are listed without one, with the reason.

How it is measured

Published cutoffs · retest cadence
Erectile function (IIEF-5)
A score of 22 to 25 is the range without erectile dysfunction (PMID PubMed ID: the permanent number the US National Library of Medicine gives a published paper. Each one links to that paper's record on PubMed. 10637462)
Retest @ 12w
Total testosterone (morning)
Below 300 ng/dL on two morning tests is the AUA cutpoint for low testosterone (PMID 29601923)
Retest @ 12w
Libido
No target value is set.

What has been graded

Interventions · evidence-graded

Cautions

Cautions
  • •PDE5 inhibitors (sildenafil, tadalafil) are the evidence-based first-line medical therapy for ED; discuss with a clinician.
  • •Testosterone replacement therapy is a prescription decision requiring lab confirmation of deficiency.
When to consult your physician

Anything in this page is educational only. Whether to start, stop or change a supplement for this condition, and how it fits with any medication you take, is a decision for your clinician. The Drug-Nutrient Depletion tool and the Contraindications Search are designed to help you prepare that conversation.

Disclosure

Medical disclaimer

These statements have not been evaluated by the Food and Drug Administration. Any grade on this page describes the strength of published human trial evidence in the populations studied. It is not a recommendation for any individual and is not medical advice. Starting, stopping or changing any supplement or medication is a decision for your physician.