The benefits of collagen: should you choose marine, bovine or porcine collagen?

Type I collagen is the main structural protein in the skin, bones and tendons, and it is also the most common type found in most collagen supplements. Type II is found primarily in cartilage, so it is more prominent in products aimed at joint health. Type III is present in the more elastic layers of the skin and in blood vessels, often alongside type I. These three types make up the majority of commercial collagen products, and the source – bovine, marine or porcine – determines the proportions in which you get them.

If you are not yet familiar with what happens to collagen peptides in the body – in other words, why collagen is broken down into smaller pieces and why this supports absorption – it is worth first reading how collagen peptides work in supporting the skin and joints before we move on to the differences between source types.

Now let’s go through the three most common sources one by one: which one may be the better choice, for whom, and in what situation.

Bovine collagen – when versatility is the main priority

Bovine collagen is extracted from cattle-derived connective tissues, and in dietary supplements, you will typically find it in hydrolysed form. It mainly contains type I and type III collagen, which play an important role in the structure of the skin, tendons, bones and other connective tissues. This is why this form is a common choice for people primarily looking to support skin firmness, elasticity, and general connective tissue health.

One advantage of bovine collagen is that it can be produced consistently, which is why it forms the basis of many different collagen products. If it is important to you that a product is built on a well-known collagen source, it can be a good starting point.

From an allergy perspective, it may be a useful option for people who are sensitive to fish or marine-derived ingredients. However, those who avoid bovine-derived products may be better off considering a marine or possibly porcine alternative.

RIAVITA Collagen Synergy, for example, is deliberately based on hydrolysed bovine collagen: its daily dose provides 10,000 mg, complemented by hyaluronic acid, elastin, biotin, Q10 and resveratrol extract. This means the formula is not built on collagen intake alone, but also contains additional ingredients that are particularly relevant in products positioned for skin, hair, and beauty support. You can find the scientific background behind the formula explained in detail on the “Science Behind Collagen Synergy” page.

Marine (fish) collagen – fast absorption, a different profile

Marine collagen is extracted from the skin and scales of fish and typically contains type I collagen. It is often associated with lower-molecular-weight peptides, which is why it has shown favourable absorption in some studies. However, this does not mean that every marine collagen product is automatically more effective: the degree of hydrolysis, peptide size, and daily dose all matter just as much.

In addition to fast absorption, one of the advantages of marine collagen is that it can be an ideal choice for people who avoid beef and bovine-derived products – for religious, dietary or personal reasons – but otherwise consume fish. Marine collagen is often used in skin-focused products, as it is typically rich in type I collagen and appears in several formulations studied in relation to skin hydration and elasticity.

Important warning: this source is not recommended for anyone allergic to shellfish or fish. It is always worth checking the ingredient list carefully and, if in doubt, asking for medical advice before introducing a new dietary supplement.

Porcine collagen – less well known, but still relevant

Porcine collagen is structurally similar to bovine collagen: it also contains type I and type III collagen. One of its characteristics is that, according to research, its structure is close to the collagen structure of human skin, which is why it is often used for biomedical and cosmetic purposes as well.

As a dietary supplement, porcine collagen is not as widespread as bovine or marine collagen. There are several reasons for this: on the one hand, many people exclude it because of religious or dietary restrictions, such as halal, kosher or vegetarian considerations; on the other hand, the market has simply paid less attention to it as a consumer product, while it is more common in industrial and medical applications. As a result, porcine collagen-based powders or capsules are harder to find than bovine- or marine-based products.

If you are comparing options because of allergies or dietary restrictions, porcine collagen may be a third option alongside bovine and marine collagen – but as with every collagen source, the first step is to check the ingredient list carefully. Since fewer consumer studies have been conducted with it, it is worth researching the specific product more thoroughly before choosing it.

What to check on the ingredient list, regardless of source

Whichever source you choose, a few factors always matter:

• Hydrolysed form: this means the collagen has been broken down into smaller peptides, making it easier to absorb. Most human studies also use hydrolysed collagen, so if you expect measurable results, this is one of the most important criteria.
• Daily dose: products on the market can range from 2.5 to 10 grams per day. The lower the dose, the more important it is to check what dosage was used in the studies.
• Supporting ingredients: vitamin C, for example, is an essential cofactor for the body’s own collagen synthesis; while hyaluronic acid supports skin hydration – their combined presence may strengthen the effect of collagen.
• Presence of elastin: alongside collagen, elastin is another less emphasised but important protein responsible for skin elasticity. Few collagen products contain it, so it is worth looking for it on the ingredient list.
• Presence of biotin: biotin, also known as vitamin B7, is a common supporting ingredient in formulas positioned for skin, hair, and beauty. It is especially worth paying attention to if you are looking not just for collagen, but for a more complex product focused on both hair and skin.
• Antioxidant companions, such as Q10 or resveratrol extract: collagen fibres are constantly exposed to oxidative stress, for example, from UV radiation, smoking or air pollution. This is why some complex collagen formulas also contain antioxidant-type supporting ingredients, such as coenzyme Q10 or resveratrol extract.

Choosing the source is the first decision; carefully checking the ingredient list is the second.

Which collagen suits you?

There is no single “best” collagen, only the one that suits you. The summary below helps you quickly see which source is most closely linked to which situation:

So which collagen should you choose: porcine, bovine, or marine?

The benefits of collagen depend not only on the amount, but also on the source. Bovine collagen is the most widely researched and most versatile choice; marine collagen offers fast absorption and a beef-free alternative; and porcine collagen is a less well-known but relevant third option in certain situations.

Whichever you choose, two things are always important: the hydrolysed form, because it supports effective absorption, and a careful review of the ingredient list, because allergens and the daily dose are decisive factors regardless of source type.