QUICK ANSWER
- Stronger evidence: Zinc (if deficient) and Tongkat Ali.
- Mixed or early: Magnesium, Epimedium, Saw Palmetto, Hawthorn.
- Weak or thin: Tribulus, Chrysin, Winged Treebine.
Stronger evidence
Tongkat Ali raised total testosterone in a 2022 meta-analysis, most clearly in men who started low (PubMed). Zinc raises testosterone when correcting a deficiency but adds little otherwise (2023 review).
Mixed or early evidence
Magnesium is essential but not proven to boost vitality in men who get enough. Epimedium (icariin) shows lab effects on blood-flow pathways, with limited human data; see Epimedium explained. Saw palmetto (NCCIH) and hawthorn (NCCIH) have large but mixed literatures.
Weak or thin evidence
Tribulus: a 2025 review found no robust testosterone effect (PubMed). Chrysin is poorly absorbed. Winged treebine is traditional with thin human data.
The missing milligrams
None of the nine has a published amount on the label. Evidence on an ingredient is not evidence about a finished product at unknown doses.
Bottom line
Two solid pillars, several supporting herbs. Pair it with realistic expectations from our review and check saw palmetto and PSA if you are over 50.
Frequently asked questions
Which ErecPower ingredient is strongest?
Tongkat Ali has the best human evidence, followed by zinc for men who are deficient.
Are the doses listed?
No. The label names all nine ingredients but does not publish milligram amounts.
This article is general information, not medical advice. Talk to your doctor or pharmacist before starting any supplement. We may earn a commission from links on this page; see our disclosure and editorial standards.
