GSN Marine Collagen Peptides
🐟 9.1g of hydrolysed marine collagen per serving — from wild-caught fish
💧 400mg of hyaluronic acid per serving — skin hydration and joint comfort
🍊 500mg of vitamin C (625% NRV) — essential cofactor for collagen formation
✨ 8.9g protein per serving — 39 kcal — zero sugar — zero carbs
🇧🇪 Belgian brand — clinically formulated — 30 servings per 300g jar
What is GSN Marine Collagen Peptides?
GSN Marine Collagen Peptides is a premium marine collagen supplement developed by GSN Labs — a Belgian sports nutrition brand based in Vilvorde. Each 10g serving delivers 9.1g of hydrolysed marine collagen from wild-caught fish, 400mg of hyaluronic acid and 500mg of vitamin C (625% of the EU NRV) — three complementary actives that together address the full collagen synthesis and connective tissue hydration cycle. The formula is clinically formulated, declares every dose transparently on the label, and provides one of the highest vitamin C and hyaluronic acid concentrations available in the marine collagen category.
Collagen is the most abundant structural protein in the human body — the architectural scaffold of skin, tendons, ligaments, cartilage, bones and blood vessels. After the mid-twenties, natural collagen production declines progressively. Hydrolysed marine collagen peptides address this by providing the specific amino acid building blocks (glycine, proline, hydroxyproline) that fibroblasts need to produce new collagen, delivered in a pre-digested, highly bioavailable form absorbed directly through the intestinal wall.
The marine source is chosen for its bioavailability advantage: fish collagen peptides have a smaller average molecular weight than bovine collagen peptides, enabling faster and more complete intestinal absorption and higher plasma peptide concentrations from equivalent doses.
The 500mg of vitamin C per serving (625% NRV) goes well beyond the minimal cofactor level found in most collagen supplements. Vitamin C is the mandatory cofactor for prolyl hydroxylase and lysyl hydroxylase, the two enzymes that stabilise the collagen triple helix. Without it, newly synthesised collagen degrades before it can be integrated into tissue.
The 400mg of hyaluronic acid (sodium hyaluronate) adds the hydration dimension that collagen peptides alone cannot provide — binding up to 1,000 times its own weight in water in both dermal and articular tissue.
Available in a 300g jar (30 servings) in Fruit Punch flavour.
Wild-caught marine collagen. Clinical doses. One daily scoop.
| Brand | GSN Labs |
| Flavour | Fruit Punch |
| Size | 300 gr |
How GSN Marine Collagen Peptides supports your objectives
🐟 9.1g of hydrolysed marine collagen per serving — from wild-caught fish
Each 10g serving delivers 9.1g of marine collagen peptides — a dose at the upper end of the range studied in clinical research. Marine collagen peptides have a smaller molecular weight than bovine collagen, enabling faster intestinal absorption and higher plasma concentrations. They stimulate fibroblasts to increase endogenous collagen production in skin and connective tissue. The wild-caught fish source ensures the highest quality and traceability of the marine collagen fraction.
✨ Skin firmness, elasticity and hydration
Marine collagen type I — the dominant form in fish collagen — is the primary structural protein of the dermis. Daily oral supplementation with hydrolysed type I marine collagen peptides has been demonstrated in multiple randomised controlled trials to improve skin elasticity, hydration and the visible reduction of fine lines and wrinkles after 8 to 12 weeks of consistent use. At 9.1g per serving, GSN provides a full clinical dose.
🍊 500mg of vitamin C — 625% NRV — the highest-dose cofactor available in this category
At 500mg per serving and 625% of the EU NRV, the vitamin C content of GSN Marine Collagen Peptides is one of the highest in any marine collagen powder on the market. This is not a token addition — it ensures that every gram of collagen peptide consumed has maximal enzymatic support for triple helix stabilisation, while simultaneously providing the highest-level antioxidant protection against the UV-induced oxidative damage that breaks down dermal collagen.
💧 400mg of hyaluronic acid — skin hydration and joint lubrication
Hyaluronic acid (sodium hyaluronate) binds up to 1,000 times its own weight in water. At 400mg per serving — significantly above the 80 to 200mg doses used in most collagen formulas — GSN's hyaluronic acid content provides a clinically meaningful contribution to dermal hydration and joint synovial fluid supplementation. Together with the collagen peptides, it addresses both the structural and hydration dimensions of skin and joint health simultaneously.
💪 8.9g of protein per serving — a meaningful daily protein contribution
The collagen peptides are inherently protein-rich, delivering 8.9g of protein equivalent per 10g serving. While collagen is not a complete protein (it lacks tryptophan), it provides a high concentration of glycine, proline and hydroxyproline — the amino acids most directly used in connective tissue synthesis and among the rarest in typical dietary protein sources.
🦵 Joint, tendon and ligament support for active individuals
For athletes and active individuals who subject their joints to repeated mechanical loading, the combination of collagen peptides (for cartilage and tendon matrix support) and hyaluronic acid (for synovial fluid hydration and joint lubrication) provides a comprehensive connective tissue maintenance formula in a single daily serving.
🎯 Goal guide
🏋️ Mass gain: 1 serving/day. Protects joints, tendons and ligaments under progressive overload and high training volume.
🔥 Weight loss / cutting: 1 serving/day. 39 kcal — near-zero calorie connective tissue and skin support during caloric restriction.
⚖️ Daily wellbeing: 1 serving/day. Skin, joint, hair and nail support as a year-round daily ritual.
Serving suggestion
Mix 10g (½ scoop) with approximately 300ml of water or juice. Shake for up to 30 seconds to achieve perfect consistency and dissolution. Consume once per day. Do not exceed the recommended daily dose. Not recommended during pregnancy or breastfeeding without consulting a physician. Store in a cool, dry place away from sunlight, tightly closed, at room temperature not exceeding 25°C.
Best times to enjoy it
🌅 Morning (recommended)
Morning fasted consumption maximises absorption before other dietary proteins compete for the same intestinal transporters. The Fruit Punch flavour makes the daily collagen serving a genuinely refreshing start to the day.
🏋️ 30 to 60 minutes before training (connective tissue protocol)
Research demonstrates that collagen peptides consumed before exercise — when the mechanical loading of training triggers collagen synthesis in tendons and ligaments — maximise the collagen production stimulus in connective tissue. The vitamin C in the formula ensures the enzymatic machinery for collagen triple helix formation is fully primed at the moment of highest demand.
🌙 Before sleep (alternative)
The overnight period is when the body's natural collagen synthesis and tissue repair are most active. An evening serving of GSN Marine Collagen Peptides aligns the amino acid supply with the peak repair window.
📅 Every day — including rest days
Collagen synthesis is a cumulative process. Consistent daily supplementation over 8 to 12 weeks is required for meaningful, perceptible outcomes. Skipping rest days interrupts the accumulation process and delays results.
Supplementation timeline
| Period | Expected effect |
|---|---|
| Week 1 to 3 | Improved skin hydration; early improvements in joint comfort |
| Week 4 to 8 | Measurable skin elasticity and firmness improvements |
| Week 8 to 12 | Most consistent skin, joint and connective tissue benefits — peak of clinical evidence |
| Month 3+ | Cumulative collagen density improvement; sustained benefits with continued use |
🏅 Sport Nutrition "Did you know?"
The 500mg of vitamin C per serving in GSN Marine Collagen Peptides (625% NRV) is not merely cosmetic supplementation — it corresponds closely to the doses used in the most cited research on pre-exercise collagen-vitamin C protocols. Shaw et al. (2017) demonstrated that consuming 15g of collagen-derived gelatin with 48mg of vitamin C 60 minutes before exercise increased collagen synthesis markers in connective tissue by over 100% compared to placebo. While the mechanism requires only a small amount of vitamin C, the broader antioxidant protection provided by a high-dose vitamin C supplement is separately beneficial for athletes: it reduces exercise-induced oxidative damage to collagen cross-links in the dermis and tendons, helping to preserve the structural integrity that the collagen peptides are simultaneously stimulating.
Full ingredient list
Hydrolysed marine collagen peptides (fish) (from wild-caught fish), vitamin C (ascorbic acid), hyaluronic acid (sodium hyaluronate), flavourings (Fruit Punch), sweetener (to be confirmed on current label).
Key ingredient breakdown
| Ingredient | Per 10g serving | % NRV* |
|---|---|---|
| Marine collagen peptides (hydrolysed, fish) | 9,100mg (9.1g) | — |
| Vitamin C (ascorbic acid) | 500mg | 625% |
| Hyaluronic acid (sodium hyaluronate) | 400mg | — |
*NRV: EU Nutrient Reference Value (80mg/day for vitamin C). No NRV established for collagen or hyaluronic acid.
Allergens
Contains: fish (hydrolysed marine collagen from wild-caught fish). Not suitable for individuals with a fish or seafood allergy. Not suitable for vegans or vegetarians. Always refer to the current product label for the most up-to-date allergen information.
Product characteristics:
- 9.1g marine collagen per serving
- 500mg vitamin C per serving (625% NRV)
- 400mg hyaluronic acid per serving
- Zero sugar
- Zero carbohydrates
- <0.05g fat per serving
- Zero salt
- 39 kcal per serving
- Clinically formulated
- From wild-caught fish
Nutritional values per serving (10g)
| Nutritional values | Per 100g | Per 10g serving |
|---|---|---|
| Energy | 1631.7 kJ / 390 kcal | 163.2 kJ / 39 kcal |
| Fat | <0.1g | <0.05g |
| of which saturates | 0g | 0g |
| Carbohydrates | 0g | 0g |
| of which sugars | 0g | 0g |
| Fibre | —/g | —/g |
| Protein | 89g | 8.9g |
| Salt | 0g | 0g |
Active ingredient profile per serving (10g) — label confirmed
| Active ingredient | Per 10g serving | % NRV* |
|---|---|---|
| Marine collagen peptides (hydrolysed) | 9,100mg (9.1g) | — |
| Vitamin C (ascorbic acid) | 500mg | 625% |
| Hyaluronic acid | 400mg | — |
*No NRV established for collagen or hyaluronic acid.
Jar duration guide
| Format | Net weight | Servings (at 10g/day) | Duration |
|---|---|---|---|
| Standard | 300g | 30 servings | 30 days (1 month) |
Q1 — Why does GSN Marine Collagen include 500mg of vitamin C rather than the 40 to 80mg found in most collagen supplements?
The 625% NRV vitamin C dose in GSN Marine Collagen Peptides serves two distinct purposes beyond the minimum collagen synthesis cofactor requirement. First, it maximises the enzymatic capacity for collagen triple helix stabilisation — the conversion of proline and lysine to hydroxyproline and hydroxylysine requires vitamin C as a cofactor at every synthesis cycle, and higher circulating vitamin C ensures this step is never rate-limiting. Second, 500mg daily provides substantial plasma antioxidant saturation, protecting existing collagen structures in skin and connective tissue from the UV-induced and exercise-induced oxidative degradation that continuously breaks down dermal and tendon collagen throughout life. The two effects are cumulative, making high-dose vitamin C a genuinely more effective collagen support strategy than minimal-dose additions.
Q2 — Why does GSN Marine Collagen include 400mg of hyaluronic acid — is this a clinically meaningful dose?
Yes. Most collagen formulas include hyaluronic acid at 20 to 100mg as a cosmetic addition. Clinical studies on oral hyaluronic acid supplementation have used doses of 80 to 240mg per day, with the highest doses producing the most consistent outcomes for skin hydration and joint comfort. At 400mg per serving, GSN provides a dose above the upper range of most published clinical protocols, reflecting the brand's philosophy of functional rather than cosmetic ingredient dosing.
Q3 — Is GSN Marine Collagen Peptides suitable for vegans?
No. The collagen peptides are derived from wild-caught fish — collagen is an animal structural protein with no commercially viable plant-based equivalent. The vitamin C and hyaluronic acid components are synthetic or plant-derived, but the primary active (collagen) is necessarily from a fish source. Not suitable for vegans or vegetarians.
Q4 — Can I take GSN Marine Collagen with GSN Ultrapure Creatine and GSN BCAA + EAA + Electrolytes?
Yes, and this combination is directly complementary. The marine collagen addresses connective tissue and skin health through structural peptide supplementation. The creatine addresses explosive strength, power and lean mass through phosphocreatine resynthesis. The BCAA + EAA + Electrolytes addresses intra-workout amino acid availability and hydration. Each product targets a distinct physiological dimension — there are no interactions or conflicts between the three, and they are frequently used together by athletes who want comprehensive daily nutritional support across all performance and recovery vectors.
Q5 — How long does one 300g jar last?
At 10g per serving and 1 serving per day, the 300g jar provides exactly 30 servings — one full month of daily supplementation. For the minimum meaningful supplementation period for collagen (8 to 12 weeks), 2 to 3 consecutive jars are needed. Purchasing two jars ensures uninterrupted supplementation across the initial 8-week period when results first become perceptible.