Men Taking "Collagen" May Be Getting the Wrong Kind for Sexual and Vascular Health
The collagen supplement market is dominated by bovine (cow) and marine (fish) sources. Both are marketed broadly for skin, joints, and gut health. But when it comes to men's vascular function and sexual health, the amino acid profile of the collagen source matters significantly — and this is where horse gelatin stands apart.
The difference isn't marketing. It's biochemistry. And the video above breaks it down clearly for anyone who wants to understand it before making any decision.
"Glycine content varies dramatically between collagen sources — and glycine is the amino acid most relevant to nitric oxide production and vascular tissue support in men."
Collagen Source Comparison — Glycine & Proline Content
| Source | Glycine | Proline | Type |
|---|---|---|---|
| Horse (Equine) | ~33% | ~12% | Type I + III |
| Bovine (Cow) | ~26% | ~10% | Type I |
| Marine (Fish) | ~22% | ~7% | Type I |
Approximate values based on available literature. Individual products vary.
Three Reasons the Amino Acid Difference Matters for Men
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01Glycine Supports the Nitric Oxide Pathway Glycine is a co-factor in endothelial nitric oxide synthase (eNOS) activity — the enzyme system that produces the nitric oxide responsible for signaling blood vessel dilation. Higher glycine density means more substrate available for this pathway.
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02Type III Collagen Supports Vascular Walls Marine collagen is predominantly Type I. Horse gelatin contains both Type I and Type III — the latter being the collagen type most present in blood vessel walls, organs, and smooth muscle tissue. For men focused on circulation, this dual profile is relevant.
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03Higher Peptide Bioavailability from Draft Horses Percheron horses — a heavy draft breed — develop exceptionally dense connective tissue. The collagen peptides derived from this tissue have a molecular structure researchers describe as highly bioavailable, meaning a greater proportion reaches target tissues after digestion.
See the Full Comparison in the Free Video
The researcher explains this in plain language — no biochemistry degree required.
▶ Watch the Video NowOpens in a new tab — free educational content
What This Means If You've Already Tried Collagen
If you've taken bovine or marine collagen and didn't notice much difference in your energy, libido, or circulation, the source may be part of the reason. The video explores this specifically — why men who switch to equine collagen often report a different experience, and what the likely biological explanation is.
This is not a claim that horse gelatin is a cure or treatment for any condition. It is an educational explanation of why different collagen sources have different amino acid profiles, and what that difference may mean for men's circulatory health.
Medical Disclaimer
This content is for educational purposes only and has not been evaluated by the FDA. It is not intended to diagnose, treat, cure, or prevent any disease. Individual results vary. Always consult a qualified healthcare provider before starting any supplement program.