Marine vs Bovine Collagen: What's the Difference and Which Is Better?
By Eryn Behan, Founder of NEE-V
If you're choosing a collagen supplement, one of the first decisions you'll probably come across is marine collagen vs bovine collagen.
So which is better?
Neither marine nor bovine collagen is automatically better. They come from different sources and can contain different collagen types, but the source alone doesn't determine the quality or effectiveness of a collagen supplement. The specific collagen peptides, the research behind them, the formulation and your individual preferences all matter.
At NEE-V, we formulate with both bovine and marine collagen, so I don't have an interest in telling you one is universally superior to the other.
Here's what I think is more useful to understand.
What is bovine collagen?
Bovine collagen is collagen derived from cattle and is commonly sourced from bovine hide. It is naturally rich in Type I and Type III collagen.
Type I collagen is abundant throughout the body, including in the skin, while Type III collagen is also found in skin and other connective tissues.
When bovine collagen is hydrolysed, the collagen proteins are broken down into smaller peptides, making them easier to incorporate into powdered supplements and beverages.
But there's an important distinction.
“Bovine collagen” describes the source. It doesn't tell you whether the collagen peptides themselves have been clinically researched for a particular outcome.
That's something I think consumers should pay far more attention to.
What is marine collagen?
Marine collagen is derived from fish and is typically rich in Type I collagen. Fish skin is one of the common sources used to produce marine collagen peptides.
Like bovine collagen, marine collagen can be hydrolysed into smaller collagen peptides for use in supplements.
Marine collagen can be a useful alternative for people who don't consume bovine-derived products or simply prefer a fish-derived source.
Again, though, seeing the words “marine collagen” on a label doesn't automatically tell you about the quality of the ingredient or the evidence behind it.
The source is only one part of the story.
Marine vs bovine collagen: what's the difference?
Here's the simplest comparison.
| Bovine Collagen | Marine Collagen | |
|---|---|---|
| Source | Cattle | Fish |
| Common collagen types | Type I and III | Predominantly Type I |
| Suitable for pescatarians | No | Potentially, depending on individual diet |
| Fish allergy consideration | No fish source | Not suitable for people with fish allergy |
| Can be hydrolysed into peptides | Yes | Yes |
| Can be used for skin-focused formulations | Yes | Yes |
| Automatically better for skin? | No | No |
| What matters most? | Peptide, research, formulation and consistency | Peptide, research, formulation and consistency |
Is marine collagen better absorbed than bovine collagen?
This is one of the claims I see repeated frequently online.
You'll often read that marine collagen is “more bioavailable” or “absorbed better” because its peptides are smaller.
But I think consumers should be cautious about using that statement to conclude that marine collagen is therefore a better supplement.
Both marine and bovine collagen can be hydrolysed into collagen peptides, and once consumed they're digested and absorbed through the gastrointestinal tract.
What matters more when assessing a product is the specific collagen peptide being used, its molecular characteristics, the amount consumed and, importantly, whether that ingredient has been studied in humans for the outcome you're interested in.
“Marine” isn't automatically shorthand for better absorption.
And “bovine” isn't automatically shorthand for better effectiveness.
Is marine or bovine collagen better for skin?
Both marine and bovine collagen peptides can be used in supplements designed to support skin health. The better question is whether the specific collagen peptides in the product have relevant human clinical research behind them.
This distinction was fundamental when I developed NEE-V.
Our bovine formulations use VERISOL® Bioactive Collagen Peptides®, a specific composition of collagen peptides that has been investigated in human clinical research for skin-related outcomes including elasticity and wrinkles.
That is very different from simply saying:
“This contains bovine collagen.”
The research is attached to the specific peptide ingredient, not every bovine collagen product in existence.
The same principle should be applied when assessing marine collagen.
Don't stop at the animal source.
Ask what you're actually taking.
What are Type I, Type II and Type III collagen?
You'll often see collagen products marketed according to collagen “type”, so it's worth understanding what that means.
Type I collagen
Type I is the most abundant collagen type in the human body and is found in tissues including skin, bone and tendons.
Marine collagen is predominantly associated with Type I collagen, while bovine collagen also contains Type I.
Type II collagen
Type II collagen is particularly associated with cartilage and is commonly discussed in relation to joint-focused collagen products.
Type III collagen
Type III collagen is found alongside Type I in tissues including the skin.
Bovine collagen commonly contains Types I and III.
However, there's another important point.
Collagen type and collagen peptide aren't the same thing.
Knowing that a product contains “Type I collagen” doesn't tell you everything about how that ingredient has been processed, its peptide composition or the clinical evidence supporting the finished ingredient.
Is bovine collagen better for women over 40?
There's no evidence-based reason to say that every woman over 40 should automatically choose bovine over marine collagen.
What does become increasingly relevant as we age is collagen itself.
The body's collagen production and the structure of collagen-containing tissues change over time. For women, hormonal changes around perimenopause and menopause can also have a significant effect on skin.
That's why I think women choosing collagen in their 40s, 50s and beyond should look beyond marketing claims and consider:
- what collagen ingredient is actually being used
- whether it has relevant human clinical research
- the recommended daily amount
- what else is included in the formulation
- whether the product suits their dietary preferences
- whether they can realistically take it consistently
The last point matters more than people sometimes realise.
Collagen isn't an overnight intervention.
Consistency matters.
Is marine collagen better for hair?
There isn't good evidence to say that marine collagen as a category is inherently better for hair than bovine collagen.
Hair is primarily made from keratin, not collagen, and hair growth is influenced by numerous factors including genetics, hormones, nutrition and overall health.
Where collagen becomes interesting is when we look at specific collagen peptides and the research conducted on them, rather than assuming an entire collagen source produces a particular outcome.
It's another reason I encourage people to look beyond the words “marine” and “bovine”.
What about sustainability?
This is an increasingly important question.
Both bovine and marine collagen are generally produced using animal-derived materials that might otherwise have lower-value uses within existing food-production supply chains.
However, sustainability varies between manufacturers, sourcing systems and supply chains.
If sustainability matters to you, look for transparency from the brand or ingredient manufacturer rather than assuming marine or bovine collagen is inherently the more sustainable choice.
Who should choose marine collagen?
Marine collagen may appeal to you if:
- you prefer a fish-derived collagen source
- you avoid bovine products
- you prefer predominantly Type I collagen
- the particular marine collagen product has a formulation and evidence base that suits your goals
People with fish allergies should avoid fish-derived marine collagen and seek appropriate medical advice if unsure.
Who should choose bovine collagen?
Bovine collagen may appeal to you if:
- you're comfortable consuming cattle-derived ingredients
- you want a source naturally associated with Types I and III collagen
- you're looking for a product containing a specific clinically researched bovine collagen peptide
- the formulation and supporting evidence align with what you're looking for
Again, the fact that a product is bovine isn't enough on its own.
What collagen does NEE-V use?
At NEE-V, we've chosen to offer both.
Glow Naked and VeriBerry Skin use bovine-derived VERISOL® Bioactive Collagen Peptides®.
We chose VERISOL® because I wanted NEE-V's formulations to be built around a specific collagen peptide with relevant human clinical research, rather than selecting collagen based simply on price or the ability to put a large number on the front of the tub.
For people who prefer a marine source, HydraPlenish Marine provides our marine collagen option.
The choice isn't about telling you one is “better”.
It's about giving you the information to choose the formulation that suits you.
So, is marine or bovine collagen better?
Neither is universally better.
And if there's one thing I'd like you to take away from this article, it's this:
Don't choose your collagen based solely on whether the label says marine or bovine.
Look at:
- the collagen source
- the specific collagen peptides
- clinical research behind those peptides
- serving size
- formulation
- ingredient transparency
- dietary requirements
- how easily it fits into your routine
The supplement industry loves simple comparisons.
Marine vs bovine.
Type I vs Type III.
More grams vs fewer grams.
But good formulation is more nuanced than that.
The best collagen is one with a transparent formulation, appropriate evidence behind its ingredients and a routine you can maintain consistently.
That's the philosophy behind NEE-V.
Created with care. Backed by science. Loved for results.
Explore NEE-V Collagen
Choose the collagen ritual that works for you, from clinically researched bovine collagen peptides to our marine collagen formulation.
Marine vs Bovine Collagen FAQs
Is marine collagen better than bovine collagen?
Neither marine nor bovine collagen is automatically better. They come from different sources, but the quality of a collagen supplement also depends on the specific collagen peptides, formulation, amount consumed and evidence supporting the ingredient.
What is the main difference between marine and bovine collagen?
The primary difference is the source. Marine collagen is derived from fish and is predominantly associated with Type I collagen. Bovine collagen is derived from cattle and commonly contains Types I and III collagen.
Which collagen is better for skin, marine or bovine?
Both can be used in skin-focused collagen supplements. Rather than choosing solely by source, look for the specific collagen peptides being used and whether they have relevant human clinical research for skin outcomes.
Is marine collagen more bioavailable than bovine collagen?
Marine collagen is sometimes marketed as more bioavailable, but this shouldn't be interpreted to mean all marine collagen supplements are more effective than bovine collagen. Both can be hydrolysed into collagen peptides, and factors including peptide composition, dose and clinical evidence are important when comparing products.
Which collagen is best for women over 40?
There isn't one collagen source that's best for every woman over 40. Consider the specific peptides, relevant clinical research, formulation, serving size, dietary preferences and whether the product is easy to take consistently.
Is bovine collagen Type I or Type III?
Bovine collagen commonly contains Types I and III collagen. Type I is abundant in skin and many other tissues, while Type III is also found in skin and connective tissues.
What type of collagen is marine collagen?
Marine collagen derived from fish is predominantly associated with Type I collagen.
Can you take marine collagen if you're allergic to fish?
Fish-derived marine collagen is not appropriate for people with a fish allergy. Speak with an appropriate healthcare professional if you're unsure whether a collagen supplement is suitable for you.
Does NEE-V use marine or bovine collagen?
NEE-V offers both. Glow Naked and VeriBerry Skin contain bovine-derived VERISOL® Bioactive Collagen Peptides®, while HydraPlenish Marine provides a marine-derived collagen option.
What should I look for when buying collagen?
Look beyond the words marine or bovine. Consider the specific collagen peptides, relevant human clinical research, serving size, complete formulation, ingredient transparency, dietary requirements and whether the product suits a routine you can maintain consistently.