Peptan / FAQ
What is collagen ?

Collagen is the body’s most abundant protein, making up approximately 30% of the proteins in our body. Collagen is the key structural protein that ensures the cohesion, elasticity and strength of all our connective tissues, including skin, tendons, ligaments, cartilage and bones.

What are the types of collagen ?

In our bodies, there are different types of collagen, 80 – 90% are either type I, II or III, with type I being the most common.
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Benefits of collagen.

When hydrolyzed, collagen becomes highly digestible and bioavailable. The resulting collagen peptides are bioactive. Scientific studies have shown that collagen peptides type 1 and type 2 can contribute to different health benefits, discover more.

Where does collagen come from ?

Collagen naturally exists in our bodies and it is the most abundant protein found in the bones, muscles, skin, and tendons. Collagen supplements normally refer to collagen peptides hydrolyzed from native collagen from animal sources, which can be bovine (beef), porcine (pork) or fish.
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Are collagen peptides from a specific animal source better than the others ?

In fact, when collagen is hydrolyzed, its triple helix falls apart and the long amino acid chains are broken down into small peptides of amino acids which are absorbed, digested and delivered to their site of action in our body. So it doesn’t really make a difference from which animal source the collagen peptides are produced (the amino acid composition is the same for collagen from for example fish, bovine or porcine). It really comes down to the preference of the individuals.

What is Peptan ?

Peptan is the world’s leading collagen peptides brand produced and marketed by Rousselot. Discover more.

What type of collagen is Peptan ?

Peptan is a type I collagen peptide. In the Peptan product range the Peptan IIm is hydrolyzed collagen type II matrix, therefore a type II collagen.

How is Peptan different from other collagen brands ?

Peptan is backed by scientific evidence. We have published results from clinical studies showing the benefits of Peptan for skin beauty, joint health and recovery from exercise, as well as mechanistic data that explains how Peptan conveys those effects at a cellular level. Furthermore our comprehensive data from preclinical studies demonstrates that Peptan helps to maintain healthy bones. Thus, Peptan is a unique collagen peptide offering a holistic solution to maintain the health of the musculoskeletal system and the skin. Our scientific team continuously works to extend the available science and to explore new health areas for collagen products. The recently launched Peptan IIm, hydrolyzed type II collagen matrix’s joint health benefits on a lower dosage is also backed by scientific evidence.

Benefits of Peptan

Peptan has been demonstrated in multiple scientific studies to support musculoskeletal health, skin and hair health. It is known to support overall health benefits.

Is the product better the lower its molecular weight ?

Peptan is manufactured in two different grades of molecular weight, 5000Da and 2000Da. Both products are highly bioavailable and are digested and absorbed with the same efficacy.

Why is Peptan used in sports nutrition ?

Highly bioavailable, safe and pure, Peptan provides an essential source of protein to replenish the body’s needs during and after strenuous exercise programs. A recent clinical study has shown the beneficial effects of collagen peptides for exercise recovery.

Why is Peptan used in senior nutrition ?

With advancing years, come joint stiffness, brittle bones and loss of muscle mass. Bones, joints and muscles have a common component, which is collagen. A supplement of 10g per day of Peptan can help to maintain the health of tissues and promote mobility.  

Is absorption and efficacy of collagen peptides dosage dependent ?

Absolutely. Our mechanistic studies in the area of joint health clearly show that the effects of Peptan on cartilage structure and inflammation are dose-dependent. This nicely links into the dose-dependency of Peptan absorption, with levels of circulating hydroxyproline that increased with the administered dosage. From a scientific point of view the dose-dependency of the effect enforces their biological importance, truly linking it to the supplementation with Peptan.

When should I start taking Peptan to promote my health ?

Peptan is a preventative nutrition that should be taken as early as possible for groups that are more prone to joint and bone conditions such as aging consumers and athletes. Peptan is also an effective solution to preventing and counteracting the skin aging process. Peptan is not intended to diagnose, treat, cure, or prevent any disease.

How does Peptan contribute to bone health ?

Collagen represents 90% of organic bone mass. Bone is a dynamic tissue that is continuously turned over. Our published evidence shows that Peptan effectively pushes this balance towards the formation of new bone tissue, at the same time slowing-down bone degradation. An increase in bone mass density can be observed when a supplement of 10g per day of hydrolyzed collagen is taken for a period ranging from 3 to 12 months.

How does Peptan act on the beauty of skin ?

Reduced hydration of the skin is responsible for a loss of elasticity and the development of wrinkles. We have shown that Peptan improves the moisture levels of the skin. Even more, Peptan supports the intrinsic collagen network of deeper skin layers, by increasing its density as well as improving the structure of the fibers.

How much time is needed to see the first effect ?

According to clinical trials, a daily intake of 5 to 10g Peptan per day will help to maintain the skin’s hydration, firmness and elasticity i.e. its youth and beauty. Some studies have shown that skin’s hydration improves after one to two months. Several communities have demonstrated the benefits of collagen peptides for preserving joint health. Most studies show effects within 3 months.

Can it be taken with vitamins or minerals, and which will be the best ?

Yes, Peptan is a pure protein and 100% safe, in many finished products you will also find that Peptan is blended to target specific health benefits, such as with vitamin C, vitamin D etc. Some studies even show the synergistic effect of taking collagen peptides  with other nutrients for example calcium (Liu et al. PLoSONE 10(8): 2015).


Benefits of Peptan IIm

Peptan IIm is hydrolyzed collagen type II matrix extracted from cartilage of natural source, it is developed specifically to support joint health at a lower daily dosage (1 – 3g).

Which Peptan should I take ?

It depends on what you are looking for, if you are looking for overall health support including skin, hair and mobility then Peptan is your choice. If you are looking for promoting joint health, then we recommend going for Peptan IIm.

How do Peptan and Peptan IIm contribute to Joint health ?

There is evidence that both Peptan and Peptan IIm can support joint health by alleviating joint discomfort, promote joint function and reducing inflammation. There are multiple potential applications since the target population may vary from athletes (whose joints are subjected to stress), to elderly people (the group most affected by mobility limiting conditions such as joint stiffness). Peptan IIm supports joint health by protecting cartilage, providing cushioning and lubrication and anti-inflammatory effect at a lower dosage level compared to Peptan.


When is the best time to consume Peptan ?

Peptan collagen peptides are pure protein and can be consumed at any time of the day.

What is the frequency to consume collagen – how many times in a week will be the best ?

Based on our studies, health effects are observed with daily intake of Peptan therefore we recommend to take it on a daily basis to ensure the effectiveness of Peptan.

How do I take Peptan and Peptan IIm ?

Peptan in pure powder is neutral in taste and odor and soluble in cold water so can be easily integrated in different types of food and beverages that suit your lifestyle. Discover the recipes. Peptan in finished products can also exist in ready to drink, dairy, jelly and more. Peptan IIm in finished products is typically sold in capsule, tablet or shot form due to its low daily dosage, so making it easy and convenient to take.

Can pregnant women, children or adolescents take Peptan and Peptan IIm ?

Clinical trials with Peptan have not been performed in pregnant women, children or adolescents. Before taking Peptan always consult a medical doctor for advice.

When should I start taking Peptan and Peptan IIm to promote my health ?

Peptan is a preventative nutrition that should be taken as early as possible for groups that are more prone to joint and bone conditions such as aging consumers and athletes. Peptan is also an effective solution to preventing and counteracting the skin aging process. Both Peptan and Peptan IIm are not intended to diagnose, treat, cure, or prevent any disease.


On our Rousselot Health and Nutrition website we offer numerous documents such as brochures, whitepapers, infographics and more if you wish to learn more about Peptan. Click here to access.


This website is not intended for sales to consumers. Rousselot makes no representation or warranty, whether expressed or implied, as to the accuracy, reliability, or completeness of the information, nor does it assume any legal liability, whether direct or indirect, for any information. Use of this information shall be at your discretion and risk. Nothing herein relieves you from carrying out your own suitability determinations and tests and from your obligation to comply with all applicable laws and regulations and to observe all third-party rights. This product is not intended to diagnose, treat, cure, or prevent any disease. The uses and claims for Rousselot’s products recommended in this website should be adapted to the current local regulatory environment. This statement has not been evaluated by the Food and Drug Administration.