Beyond cosmetics, collagen peptides also appear in orally taken dietary supplements. That's a completely different route of administration than a serum or cream — the raw material can be similar (freeze-dried fish collagen), but the absorption mechanism and purpose differ. In this article we explain how collagen supplementation works, using Nutrivi Collagen Booster as an example.
As with cosmetics, it's worth distinguishing full-size collagen from its hydrolysed fragments — peptides — in dietary supplements too. The raw material used in Nutrivi Collagen Booster is freeze-dried fish collagen: collagen sourced from fish skins, with water removed through freeze-drying, without high temperatures.
Regardless of the route of administration (capsule or cosmetic), the raw material undergoes further processing either in the body or during manufacturing — for a supplement, the key step is digestion, which breaks collagen down into smaller fragments and individual amino acids before they're absorbed in the gut.
The raw material sourced from fish skins is exceptionally rich in signal peptides. Nutrivi removes the water through freeze-drying rather than conventional drying or heating — this keeps the delicate peptide structure intact.
Collagen Booster is the simplest form of collagen supplementation in the Nutrivi range — a capsule for everyday use, with no need to dissolve it in water.
| Ingredient | Content |
|---|---|
| Freeze-dried fish collagen | 200 mg per serving |
| Vitamin C | from rosehip |
| Form | capsule |
| Dosage | once a day |
Vitamin C isn't a random addition to Collagen Booster — it acts as a cofactor in the hydroxylation of proline and lysine, steps essential for the body to properly form the collagen molecule. This is one reason collagen supplements are usually paired with vitamin C rather than sold as pure collagen.
Collagen taken orally enters the digestive tract, where digestive enzymes break it down into shorter peptides and individual amino acids — only in this form can these compounds be absorbed through the intestinal lining and enter the bloodstream. This is a fundamentally different route than a cosmetic applied to the skin, where the peptide must cross the epidermal barrier rather than the digestive system.
A full comparison of both routes of administration — including differences in mechanism and purpose — is covered in a separate article: Peptides in cosmetics vs supplements — is it the same technology? →
Collagen Booster isn't the only form of collagen supplementation in the Nutrivi range. For those needing more intensive support, there are also peptide drinks in sachets, with a higher dose and an extended composition:
| Product | Form | Collagen dose | Additional ingredients | Focus |
|---|---|---|---|---|
| Collagen Booster | capsule | 200 mg | vitamin C (rosehip) | everyday skin support |
| Holistic Peptide Complex | drink (sachet) | 300 mg | astaxanthin, Maitake, Reishi | immunity, prevention |
| Physio Sport Peptide Complex | drink (sachet) | 650 mg | hyaluronic acid, MSM, glucosamine, chondroitin | joints, post-exercise recovery |
Choosing between a capsule and a drink mostly comes down to dose, convenience, and additional purpose — Collagen Booster works well as a simple, everyday dietary addition, while the peptide drinks offer more targeted support for a specific need.
Thanks to its simple form (one capsule a day) and no need to dissolve it in water, Collagen Booster is usually recommended as an entry point for people who want to add collagen supplementation to their daily routine without changing habits — unlike the peptide drinks, which require preparation and target more specific needs (joints, immunity).
Content prepared: September 2026. Content requires periodic review in line with composition and manufacturer material updates. Dietary supplements should not be used as a substitute for a varied diet.