Which marine collagen supplement is best for me?
With a growing marine collagen market, choosing the right supplement for your lifestyle and needs can feel overwhelming. This article covers what marine collagen genuinely does, the different forms it comes in, honest comparisons of each, and how to choose based on your preferences — not on marketing claims about one form being "the best."
What is collagen — a quick primer
Collagen is the most abundant structural protein in the human body — making up around 30% of your total body protein. It provides the scaffolding for skin, bones, tendons, ligaments, cartilage, and connective tissue. Collagen production begins to decline by roughly 1-1.5% per year from around age 25, accelerating around menopause (research suggests up to 30% loss in the first 5 years post-menopause).
Supplemental collagen provides amino acids — particularly glycine, proline, and hydroxyproline — that fibroblasts use to build new collagen throughout the body.
What is marine collagen specifically?
Marine collagen is sourced from fish skin — a by-product of the fishing industry. It's predominantly Type I collagen, which is the same type that makes up around 90% of your body's collagen and the main collagen in skin. The hydrolysis process breaks the collagen protein down into small peptides (typically 500-2,000 Daltons) that can be absorbed through the intestinal wall and transported through the bloodstream.
Marine collagen has some evidence for around 1.5x higher bioavailability than bovine collagen, though all hydrolysed collagen forms are well-absorbed. It's also the most researched collagen source for skin outcomes, and suits a wider range of religious and dietary preferences than bovine or porcine (no beef or pork).
Where marine collagen has evidence
- Skin — strongest evidence area. Clinical studies support elasticity, hydration, and appearance of fine lines over 8-12 weeks at 10g daily
- Joints — emerging evidence at 5-15g daily over 12+ weeks, particularly alongside movement
- Nails — often the first change users notice
- Bones — early evidence for bone density, particularly in postmenopausal women alongside vitamin D and calcium
- Hair — emerging evidence, less consistent than skin
The different forms of marine collagen
Marine collagen comes in several formats. Being honest: none is dramatically superior to another when the dose and quality are matched. The differences are mostly about convenience and preference. Let's walk through each.
Capsules and tablets
Pros: highly portable, easy to take on the go, no taste, no measuring.
Cons: collagen doses are relatively large (10g) so capsules require multiple pills per serving — often 5-10 capsules to reach a clinical dose. This makes capsules less convenient for high-dose collagen than for other supplements.
Best for: people who prefer swallowing pills and don't mind taking multiple capsules daily.
Liquid sachets
Pros: pre-measured for consistent dosing every day, no scooping or measuring, quick to consume as a shot. Modern pre-measured sachets are compact and travel-friendly (they fit in a small bag or pocket).
Cons: flavour matters — needs to be one you enjoy taking daily. Some people prefer to add their collagen to other drinks or foods rather than take a distinctly flavoured shot.
Best for: people who want zero measuring and prep, prefer a quick daily shot, and enjoy the flavour profile.
Flavourless powder
Pros: mix into anything — coffee, tea, smoothies, porridge, yoghurt, water. Flexibility in how you consume it. A single larger container lasts longer than individual sachets.
Cons: requires measuring a scoop each time (though most come with a measuring scoop). Slightly less "grab and go" than pre-measured sachets.
Best for: people who want flexibility in how they consume their collagen, prefer to add it to existing drinks/foods, and don't mind measuring.
Flavoured powder-to-liquid sachets
Pros: combines pre-measured dosing with the enjoyment of a flavoured drink.
Cons: similar to liquid sachets — flavour needs to suit you.
Meet the Kollo range
Kollo now offers marine collagen in two formats — pick the one that fits how you live.
Kollo Premium Liquid Marine Collagen — the original
Featured Product · Liquid
Premium Liquid Marine Collagen
10,000mg of Naticol® marine collagen in a pre-measured tear-and-drink sachet. Natural tropical flavouring, sugar-free.
Shop Liquid Collagen →Our flagship product delivers 10,000mg of Naticol® marine collagen peptides per daily sachet, plus vitamin C, a B vitamin complex (B1, B5, B6, B12), and l-lysine. Pre-measured tear-and-drink shot — no dilution needed, and compact enough to travel with anywhere.
NewKollo Flavourless Marine Collagen Powder
Featured Product · Powder
Flavourless Marine Collagen Powder
Premium marine collagen in flavourless powder form — mix into your coffee, tea, smoothie, porridge, or any drink of choice.
Shop Powder →Our new flavourless marine collagen powder offers flexibility for people who prefer to add their collagen to their existing daily drinks or foods rather than take a distinct shot. Same premium Naticol® marine collagen — just a different way to take it.
How to choose what's right for you
Practical questions to ask yourself:
- Do you have a morning drink you never skip? (coffee, tea, smoothie) → the flavourless powder mixes into it seamlessly
- Do you prefer no measuring or prep? → the pre-measured liquid sachet is one tear, one drink, done
- Do you enjoy the tropical flavour? → the liquid sachet is designed to taste enjoyable as a shot
- Do you travel frequently? → both work; sachets are grab-and-go; powder needs a scoop but travels well in a container
- Do you dislike distinct flavours or want to add collagen to savoury foods? → flavourless powder wins here
There is no universally "best" form. The best form is the one you'll actually take every day for 8-12 weeks minimum. Consistency matters more than format choice.
Getting the best results from your marine collagen
- Take it daily — the clinical research is based on consistent daily use. Sporadic use won't give the same outcomes
- Give it 8-12 weeks minimum — this is the clinical study window for skin outcomes. Joint outcomes take 12+ weeks. Nail changes are often noticed earliest, within 4-6 weeks
- Aim for around 10g daily — the dose used in the majority of skin research. Kollo delivers 10g in every daily serving
- Support your foundations — daily SPF (biggest single lever for facial skin), adequate protein, quality sleep, hydration, not smoking. No supplement replaces these
- Look for quality ingredients — Kollo uses Naticol® marine collagen, produced by Weishardt® in the EU with FSSC 22000 food safety certification and Friend of the Sea® sustainability certification. Every batch is Informed Choice certified
Beyond the main marine collagen — the wider Kollo range
Depending on your goals, Kollo also offers:
- Kollo Balance+ — dedicated menopause-focused formula
- Kollo Flex+ — dedicated joint care supplement
- Kollo Electrolytes+ — all six electrolytes including Aquamin marine magnesium, zero sugar
See our menopause supplements guide, electrolytes guide, and creatine guide for more on where each product fits.
Not suitable for anyone with a fish allergy.
Frequently Asked Questions
Is liquid collagen better than powder?
No — hydrolysed collagen in any well-absorbed form (liquid, powder, or capsule) gives comparable outcomes at matched doses. What matters is the dose (around 10g daily for skin), quality of the collagen, and consistency of daily use. Choose the format you'll actually take every day for 8-12 weeks.
What's the difference between Kollo's liquid sachets and the new powder?
Both deliver premium Naticol® marine collagen. The liquid sachets are pre-measured tear-and-drink shots with natural tropical flavouring — no measuring, no mixing. The new flavourless powder mixes into any drink or food and offers more flexibility for people who prefer to add collagen to their existing coffee, tea, smoothie, or porridge routine. Different formats, same premium ingredient.
How much marine collagen should I take daily?
For skin outcomes, 10g (10,000mg) daily is the dose used in most of the clinical research. For joint outcomes, 5-15g daily is the studied range. Kollo delivers 10g per serving in both the liquid sachets and powder.
How long before I might see results?
Clinical research on marine collagen skin outcomes is based on 8-12 weeks of consistent daily use at 10g. Some people notice earlier changes in nail strength or skin feel within the first few weeks. Joint outcomes take 12+ weeks. Set a mental 12-week trial period before judging results.
Is marine collagen suitable for vegetarians or vegans?
No — collagen is inherently animal-derived. Marine collagen is sourced from fish, which is suitable for pescatarians but not vegetarians or vegans. Products marketed as "vegan collagen" don't contain actual collagen; they typically combine vitamin C, silica, and other nutrients that support the body's own collagen synthesis.
Is marine collagen safe alongside other supplements or medications?
For most people, marine collagen is well-tolerated with a good safety profile. It's not suitable for anyone with a fish allergy. If you're pregnant, breastfeeding, take regular medication, or have a diagnosed health condition, please speak to your GP before starting any new supplement.
Kollo Health was co-founded by Jenni Falconer — TV presenter, Smooth Radio breakfast host, ten-time London Marathon runner and host of the RunPod podcast. Read her story and why she created Kollo.
