Collagen Peptides
Limited nutritional benefit
Hydrolysed collagen powder, about 90% protein, rich in glycine and proline, almost no tryptophan.
Collagen peptides are gelatin broken down until they dissolve in cold water, made from bovine hide, pork skin or fish skin. About 90% is protein, and a third of it is glycine, with proline and hydroxyproline making up much of the rest, the building blocks of tendon, skin and cartilage. That is also its weakness as food: it has almost no tryptophan and little leucine, so it scores close to zero as a protein for muscle and should not be counted towards a muscle-building protein target. 10-15 g a day with vitamin C has modest evidence for joint and tendon comfort and for skin elasticity. Fish collagen is a fish allergen.
As a supplement
Supplement page: dosing, interactions, lab tests →A usual adult range, not a national label — the dose and the timing differ by country and by product.
Used for
- Joints
- Skin
What to know while taking it
Timing is flexible: the peptides can be taken with a meal or between meals, and no particular food is needed for absorption. The amino acid profile is unbalanced and low in the essential amino acids, so collagen does not count as a complete protein source and should not displace ordinary dietary protein. It is a supplement rather than a treatment, and any effect builds slowly over weeks rather than being felt immediately.
When to see a doctor
Joint pain that is new, worsening, one-sided, or comes with swelling, redness or fever is not something a supplement addresses, and warrants seeing a doctor rather than continuing to wait it out.
Worth knowing
- Not a complete protein source
Reference information, not medical advice. Discuss any change with your doctor.
Macronutrients Distribution
Basic Nutritional Info
| Nutrient | Value | DV |
|---|---|---|
| Protein | 90g | 160.7% |
| Fat | 0.1g | 0.1% |
| Carbs | 0g | 0.0% |
| Simple Sugars | 0g | Estimate |
| Complex Carbs | 0g | Estimate |
| Fiber | 0g | 0.0% |
| Water | 6g | 0.2% |
| Calories | 360 | 16.0% |
Minerals
| Mineral | Amount | Unit | DV |
|---|---|---|---|
| calcium | 30 | mg | 3.0% |
| magnesium | 20 | mg | 5.0% |
| potassium | 20 | mg | 0.8% |
| sodium | 150 | mg | 6.5% |
Essential Amino Acids
| Amino Acid | Amount | Unit | DV | DIAAS |
|---|---|---|---|---|
| Histidine | 700 | mg | 100.0% | 46% |
| Isoleucine | 1230 | mg | 87.9% | 43% |
| Leucine | 2640 | mg | 96.7% | 46% |
| Lysine | 3560 | mg | 169.5% | 78% |
| Methionine | 820 | mg | 78.1% | 38% |
| Phenylalanine | 2100 | mg | 120.0% | 54% |
| Threonine | 1800 | mg | 171.4% | 76% |
| Tryptophan limiting | 10 | mg | 3.6% | 2% |
| Valine | 2220 | mg | 122.0% | 59% |
Compare with other products
Values per 100 g
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