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Collagen for hair, skin and nails

Best collagen for hair, skin and nails (2025 reviews)

Collagen, the protein of youth, can improve the condition and appearance of hair, skin and nails.

AuthorNina Wawryszuk

Author

Nina Wawryszuk

Natu.Care Editor

Nina Wawryszuk specialises in sports supplementation, strength training and psychosomatics. On a daily basis, in addition to writing articles for Natu.Care, as a personal trainer she helps athletes improve their performance through training, diet and supplementation.

Learn more about our editorial process

Reviewed byIlona Bush

Verified by an expert

Reviewed by

Ilona Bush

Master of Pharmacy

Ilona Krzak obtained her Master of Pharmacy degree from the Medical University of Wrocław. She did her internship in a hospital pharmacy and in the pharmaceutical industry. She is currently working in the profession and also runs an educational profile on Instagram: @pani_z_apteki

Learn more about our editorial process

Edited byBart Turczynski

Edited by

Bart Turczynski

Editor-in-Chief

Bart Turczynski is the editor-in-chief of Natu.Care. He is responsible for the quality of the content created on Natu.Care, among others, and ensures that all articles are based on sound scientific research and consulted with industry specialists.

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Fact-checkingLudwik Jelonek

Fact-checking

Ludwik Jelonek

Natu.Care Editor

Ludwik Jelonek is the author of more than 2,500 texts published on leading portals. His content has found its way into services such as Ostrovit and Kobieta Onet. At Natu.Care, Ludwik educates people in the most important area of life - health.

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Best collagen for hair, skin and nails (2025 reviews)

Updated:03 December, 2024

14 min

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Articles on Natu.Care are written based on scientific research, data from government websites and other reliable sources. The texts are written in cooperation with doctors, nutritionists and other health and beauty experts. Articles are reviewed before publication and during significant updates.

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Marylin Monroe sang that diamonds are a woman's best friend. I think in modern times she would put the sparkles away in the cupboard and reach for her new pal - collagen. It's called the 'protein of youth' for good reason.

Collagen supports your beauty and has a positive effect on the condition and appearance of your hair, skin and nails. Choose the best quality one and you'll feel like a million dollars yourself (or a million peptides - I'll explain later).

From this article you will learn:

How collagen affects hair, skin and nails.
What are the best collagens.
How to take collagen.
When you will see the effects.

See also:

What is the best collagen for skin, hair, nails?

The best collagen for hair, skin and nails is fish collagen hydrolysate, due to its high bioavailability and structural similarity to human collagen. The effective daily dose is a minimum of 2,500 mg daily for a minimum of3 months. The recommended collagen is Natu.Care Rise&Shine 5000 mg.

According to numerous scientific studies, regular supplementation with good quality collagen promotes the condition and appearance of hair, skin and nails, and delays the signs of ageingand. When deciding on collagen, pay attention to its type and origin.

Collagen for hair, skin and nails - ranking

In preparing our ranking of the best collagen for hair, skin and nails, we took strict criteria into account in order to bring you only the top products.

I analysed the compositions together with Ilona Krzak, MSc in pharmacy.

Number of collagens analysed: 79

Number of finalists: 12

Selection criteria

Collagen content. An effective dietary supplement should contain at least 2.5 grams (2,500 mg) of collagen in its composition.
Additional active ingredients. Good dietary supplements contain ingredients that promote the production and absorption of collagen in the body (e.g. vitamins and minerals).
Origin of collagen. Manufacturers of the best formulations always provide information on the origin of collagen, which demonstrates the transparency of operations and the quality of the raw material.
Purity of composition. We do not recommend you products with unnecessary flavours, fillers and colours.
Testing. Independent laboratory testing is the only way to know if a nutritional supplement offers you what you read on the packaging.
Certifications. We like stamps that attest to the quality of production - from the sourcing of the collagen source to the packaging of the product.
Flavour. Even the most effective supplement can ruin one thing. The fishy flavour. Here you will see the full criteria.

Best overall

Natu.Care Collagen Premium 5000 mg, mango & passion fruit

5.0

Collagen content: 5000 mg marine collagen hydrolysate
Additional active ingredients: vitamin C, low molecular weight hyaluronic acid (and L-theanine and coenzyme Q10 in cocoa flavoured collagen or vitamin A and vitamin E in mango–passion fruit flavoured collagen)
Form: powder sachets
Dose: 1 sachet per day
Sufficient for: 30 days

See price

Product description

Fish collagen from the Natu.Care brand in a dose of 5000 mg, based on certified ingredients of the best quality. Regular supplementation will positively influence the appearance of the skinóry, hairów and nails – they will be rebuilt and strengthened from the inside.

In addition to collagen, which is valuable for health and beauty, it also offers other active ingredients that help to maintain a youthful complexion, shiny hair and strong nails.

The formula contains a sufficient portion of the active ingredient to positively affect joints, the musculoskeletal system and immunity.

Natu.Care Premium Collagen is available in two flavours – Cacao Bloom and Rise&Shine. Both formulas are based on the following active ingredients: marine collagen hydrolysate, wild roseóbud extract and hyaluronic acid.

Additionally, Cacao Bloom contains natural L-theanine, coenzyme Q10 and defatted Dutch cacao. Rise&Shine instead contains vitamin E and vitamin A.

These are the best collagens in the world.

These best fish collagens on the market also rós taste – Cacao Bloom is a treat for chocolate lovers. Rise&Shine will appeal to those whoólike the refreshing taste of mangoófruit and passion fruit.

Pros and cons

Pros:

Vitamin C supports the body's collagen production, enhancing its effectiveness.
An effective dose of hyaluronic acid, which additionally supports skin hydration and joint health.
Fish collagen absorbs 50% better. Additionally, the manufacturer specifies the fish species it is sourced from (Atlantic cod).
The composition has been tested by the independent and accredited J.S. Hamilton laboratory.
MSC (Marine Stewardship Council) quality certification, which confirms that the collagen source supports sustainable fishing practices.

Cons:

None.

Additional information

Natu.Care's fish collagen receives praise for its delicious taste. You won't find the fishy aftertaste that often comes through in other collagens. Plus, you have two tasty flavors to choose from: cocoa and mango-passionfruit.

Active ingredients like coenzyme Q10, hyaluronic acid, and natural L-theanine provide anti-inflammatory and antioxidant benefits while slowing down aging processes.

User review

Super, after about 6 weeks of use, the skin on my face became noticeably firmer. Wonderful taste.

Ania ZalewskaNatu.Care customer

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Pure collagen

Natu.Care Collagen 3000 mg, tasteless

4.6

Collagen content: 3000 mg collagen hydrolysate fish
Additional active ingredients: none
.
Form: powder
.
Dose: one scoop per day
.
Sufficient for: 30 days
.

See price

Product description

The dietary supplement contains only pure fish collagen in the formula SeaGarden®. This Norwegian collagen is characterised by its purity and high bioavailability, which means that youróy body will utilise the collagen faster and more effectively.

Regular supplementation fish collagen benefits hair, skinóhand and nails and supports joints, muscles and bones. It improves the appearance of the skinóry and slows down its ageing, giving it a healthy glow.

Natu.Care Collagen 3000 mg has a neutral taste, dissolves well, does not form lumps in liquid and you can add it to your drink, yoghurt or smoothie.

Pros and cons

Natu.Care Collagen 3000 mg has a neutral taste, dissolves well, does not form lumps in liquid and you can add it to your drink, yoghurt or smoothie.

Additional information

Natu.Care Collagen 3000 mg has a neutral taste, dissolves well, does not form lumps in liquid and you can add it to your drink, yoghurt or smoothie.

Aura Herbals Colladrop Forte

4.5

Collagen content: 10,000 mg sea collagen
Additional active ingredients: vitamin C and coenzyme Q10
Form: sachets of powder
Dosage: one sachet per day
Sufficient for: 30 days

See price

Product description

A dietary supplement containing fish collagen for drinking in a high dose of 10,000 mg hydrolysate. It also offers you additional health and beauty benefits thanks to its coenzyme Q10 and vitamin C content. Supplementation with collagen can improve the appearance of your skinóskin, hairónails and improve the function of your jointsómuscles and bones.

Pros and cons

Additional information

Sundose° For Skin Anti-Aging°

4.8

Collagen content: 5000 mg of collagen hydrolysate
.
Additional active ingredients: hyaluronic acid and vitamin C
.
Form:sachets of powder to be dissolved in lukewarm water
.
Dosage: one sachet per day
.
Sufficient for: 30 days
.

See price

Product description

Simple composition without unnecessary additivesós. High-quality fish collagen with vitamin C and hyaluronic acid. The active ingredients are designed to support the health and appearance of your skinóskin, hairóand nails.

Pros and cons

Additional information

User review

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SOLVE LABS Collagen Peptides

4.2

Collagen content: 6000 mg hydrolyzed beef collagen type I and III COLLinstant®
Additional active ingredients: hyaluronic acid
Form: powder
Dose: one scoop (6 g) daily
Sufficient for: 30 days

See price

Product description

High-quality hydrolysate of bovine collagen (types I and III). Thanks to the COLLinstant® collagen peptide extraction technology, the preparation is well absorbed.

The combination of collagen and hyaluronic acid has a beneficial effect on the appearance of your skinóry. Your complexion will become firmer, moisturised and wrinkles will become shallower. The effects can also be felt on your hair: it becomes soft and shiny. The nail plate will regain its healthy appearance.

A daily serving will support the health of your jointsós, bones and muscles.

Pros and cons

High-quality hydrolysate of bovine collagen (types I and III). Thanks to the COLLinstant® collagen peptide extraction technology, the preparation is well absorbed.

A daily serving will support the health of your jointsós, bones and muscles.

Additional information

High-quality hydrolysate of bovine collagen (types I and III). Thanks to the COLLinstant® collagen peptide extraction technology, the preparation is well absorbed.

A daily serving will support the health of your jointsós, bones and muscles.

User review

High-quality hydrolysate of bovine collagen (types I and III). Thanks to the COLLinstant® collagen peptide extraction technology, the preparation is well absorbed.

A daily serving will support the health of your jointsós, bones and muscles.

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YANGO Collagen Type I and III powder

4.2

Collagen content: 10,000 mg hydrolysate of fish collagen types I and III
Additional active ingredients: none
Form: powder to be dissolved in water
Dose: two scoops (10 g) of powder daily
Sufficient for: 30 days

See price

Product description

Collagen in powder form with a neutral taste and smell. It does not contain any additional active ingredients, which may appeal to allergy sufferers and those whoóre already taking other dietary supplements and do not want to exceed the maximum recommended daily dosage.

The supplement contains fish collagen hydrolysate, whichóry considered to be the best and most easily absorbed by the human body. A high daily serving (as much as 10,000 mg) will effectively improve the condition of your skin reducing the visible symptoms of ageing.

The supplement is designed to help improve the condition of your skin reducing the visible symptoms of ageing.

Taking the formula can also improve the condition of your hair and nails, and have a positive effect on your joints, muscles and bones.

Pros and cons

The supplement is designed to help improve the condition of your skin reducing the visible symptoms of ageing.

Taking the formula can also improve the condition of your hair and nails, and have a positive effect on your joints, muscles and bones.

Additional information

The supplement is designed to help improve the condition of your skin reducing the visible symptoms of ageing.

Taking the formula can also improve the condition of your hair and nails, and have a positive effect on your joints, muscles and bones.

User review

The supplement is designed to help improve the condition of your skin reducing the visible symptoms of ageing.

Taking the formula can also improve the condition of your hair and nails, and have a positive effect on your joints, muscles and bones.

Pharmovit Harmony Beauty

4.2

Collagen content: 5000 mg collagen hydrolysate VERISOL®
Additional active ingredients: vitamin C, hyaluronic acid, MSM, field horsetail herb extract, horsetail root extract Indian ginseng root, vitamin A, zinc, nettle leaf extract, gotu kola herb extract, Japanese knotweed root extract, long oyster root extract, niacin, vitamin E, selenium, copper, vitamin B2, vitamin B12, biotin, iodine
Form: Liquid
Dose: 30 ml liquid
Sufficient for: 16 days

See price

Product description

Collagen in the form of easily absorbed peptidesów hidden in the VERISOL® complex. Thanks to its high dosage and many additional vitamins and plant extracts, the formula can improve the firmness of the skinóry, shallow wrinkles and resistós aging process.

It will also have a beneficial effect on hair – it will help thicken it and make it shiny and strong. Amongst other things, its biotin content will also improve the condition of the nail plate.

Biotin is also beneficial for your hair.

Pros and cons

It will also have a beneficial effect on hair – it will help thicken it and make it shiny and strong. Amongst other things, its biotin content will also improve the condition of the nail plate.

Biotin is also beneficial for your hair.

Additional information

It will also have a beneficial effect on hair – it will help thicken it and make it shiny and strong. Amongst other things, its biotin content will also improve the condition of the nail plate.

Biotin is also beneficial for your hair.

User review

It will also have a beneficial effect on hair – it will help thicken it and make it shiny and strong. Amongst other things, its biotin content will also improve the condition of the nail plate.

Biotin is also beneficial for your hair.

COLLIBRE Beauty Drink

4.2

Collagen content: 10,000 mg hydrolyzed collagen beef collagen
Additional active ingredients: vitamin A, vitamin C, vitamin E, silicon
Form: shots
Dose: 1 shot per day (140 ml)
Sufficient for: 30 days

See price

Product description

The dietary supplement from COLLIBRE contains Swiss collagen hydrolysate in a high daily dose of 10,000 mg. In addition, the formula provides vitamins and silicon thatósupport the health of hairóskinóand nails.

Pros and cons

Additional information

User review

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See also:

Collagen - the protein of youth

Collagen is an essential building protein in your body. It is an important component that forms skin, bones, muscles, ligaments, joints, tendons and connective tissue. It makes up as much as 30% of all proteins in your body and up to 70% of the weight of your dermisand.

After the age of 25, natural collagen synthesis begins to decline. The first wrinkles appear on the skin and the skin loses its firmness. This process accelerates especially during the menopause.

Ilona Krzak Master of Pharmacy

There are as many as 28 types of collagenand. For you, the most important are:

type I collagen (makes up to 90% of all collagen in the body),
type II collagen (building block of joint cartilage),
type III collagen (makes up about 5-20% of all collagen in the body)and.

You will find these types (and most often a duo of I and II) in collagen supplements. As you can see, the protein of youth binds you together - which is why it's so important to make sure you get the right amount of it in your body.

Collagen is increasingly being used as a nutraceutical, i.e. a food with not only nutritional properties but also active, pharmaceutical effects.

Ilona Krzak Master of Pharmacy

Collagen for the skin

Does collagen help the skin? Yes. But only if you consume it. Because lubricating yourself with collagen creams unfortunately won't fill in wrinkles or improve your skin's elasticity and toneand.

The cosmetologist explains:

Collagen in cream form has only a superficial effect. The collagen molecule is too large in relation to the holes in the skin - it will not penetrate into the deeper layers of the skin. Topically, it can give a feeling of hydration and elasticity, but there is no chance of making up the collagen deficiency by using collagen creams.

Katarzyna SrebrCosmetologist

This is why in our ranking you won't find greasers, but good products that have the chance to help you at the source - that is, from the inside.

Regular collagen supplementationand:

increases skin hydration,
improves skin elasticity and tone,
reduces the appearance of fine wrinkles and fine lines,
can reduce imperfections (e.g. pimples),
reduces visibility of cellulite,
helps skin healing (e.g. after acne; scarring, stretch marks).

Research studies

A collection of studies involving women of all ages suggests that supplementation with 2.5 g hydrolysed fish collagen per day improves the appearance and tone of the skin. Participants notice this with the naked eye, and researchers even notice it under a magnifying glass when they check skin densityand.

Hair collagen

Your hair is made up mainly of keratin. Keratin is the protein that gives them structure and protects them from damageand. The body uses several amino acids to build keratin, some of which you will find in collagen - such as proline or lysine .

After collagen and other proteins are ingested, the body breaks them down into amino acids, which are then used to build new proteins and compoundsand.

How does collagen affect hair ?

Gives them a strong texture.
Reduces damage to hair follicles.
Prevents damage to the hair shaft.
Prevents damage to the hair shaft.
May slow down the graying process.
May prevent hair thinning.

Also, collagen improves skin health by increasing skin hydration levels. And nourished skin - including the scalp - is a conducive environment for hair growth.

Scientific research

In a 2014 study, more than 1,000 people took 5 g collagen hydrolysate for 12 weeks. Supplementation reduced dry skin and improved collagen density in the skinand.

Dry scalp promotes hair weakness and deterioration.

Katarzyna SrebrCosmetologist

Important

If you are experiencing hair loss, get blood tests to find the cause before starting supplementation. Collagen will support hair restoration but will not solve the problem.

See also:

Collagen for nails

Nails are mainly made up of keratin, the protein you find in your hair. Regular collagen supplementation can improve the condition of the nail plate, give it elasticity and accelerate growthand.

Collagen support is particularly recommended for nails tired after hybrid polish. Combined with good nbsp;nail conditioners and home care, you'll restore their healthy appearance faster.

Frequent nail treatments such as hybrid or extensions, especially if done incorrectly, weaken the nail plate considerably. An injection of "bricks" of, among other things, collagen to rebuild the nail is therefore useful.

Ilona Krzak Master of Pharmacy

Scientific research

In a 2017 study, a group of women took 2.5g of collagen for six months. After this time, the participants noticed faster nail growth, reduced fragility and brittlenessand.

See also: Vitamins for nails

How else does collagen work?

In addition to supporting your beauty collagen helps with and:

proper joint function,
muscle regeneration and endurance,
bone system (among other things, it may prevent osteoporosis),
improve the body's immune system,

How to use collagen to make it work?

Choose the best quality collagen, preferably one that contains special formulations. This way you know that the manufacturer has taken care to ensure high quality raw material and production. Look for formulas such as:

on the collagen label.

Seagarden,
Verisol,
Naticol,
Peptan ®,
COLLAGEN HM™,
BioCell Collagen ®,
COLLinstant ®,

The best absorbed is hydrolysed fish collagenand (also called Norwegian, marine or marine collagen). Through the process of hydrolysis, collagen is broken down into smaller particles - collagen peptides. What is this sorcery?"

Fish collagen peptides are absorbed faster and more effectively by the body than other forms.

Ilona Krzak Master of Pharmacy

To see results, supplement collagen in a daily serving of at least 2.5 g (2,500 mg) and take it regularly for at least 3 months. Regularity is the key. It's no trick to drink 10g of collagen every few days, but make sure you have a daily routine. Choose collagen with vitamin C, which supports natural collagen production.

Help collagen - eliminate factors that destroy collagen in the body, such as smoking (even passively), a highly processed diet or lack of exercise.

When will I see results?

When unruly baby hair begins to tickle your forehead, crow's feet diminish and nails serve as an opener depends on several factors - health, age, amount of collagen in the body, diet, addictions and stressand.

It's very individual, but scientists have observed some patterns in effects of drinking collagen:

after 4 weeks: improvement in skin firmness and tone;
after 8 weeks: improved hair density and increased skin hydration;
after 6 months: reduction in the appearance of fine wrinkles, improvement in the condition of the nail plate;

I recommend you take photos before you start supplementation and compare them after one month, three months and six months - you will see for yourself if collagen has helped you.

See also:

Summary

Many scientific studies suggest that collagen can improve the condition and appearance of hair, skin and nails.
Regular intake of dietary supplements with collagen increases skin hydration, improves skin elasticity and firmness, promotes healthy hair growth and improves the condition of the nail plate.
The best collagen for the skin.
The best collagen for hair, skin and nails is Natu.Care Collagen Premium 5000 mg, which contains high quality and bioavailable fish collagen.
Take 2.5g of collagen daily for a minimum of 3 months to see results.

FAQ

Fish or bovine collagen - which is better?

Both types collagen are good sources of it, but fish collagen is similar to human collagen, so its absorbability is incomparably higher than beef collagen. Unless you are allergic to fish and seafood, this type of collagen should be your first choice in supplementation if you are hoping for faster and better results.

What is the best collagen for wrinkles?

The best collagen for wrinkles is collagen in dietary supplement form. Supplementing with the protein of youth that you start losing after the age of 25 is the best way to delay the onset of wrinkles. Collagen with hyaluronic acid and vitaminC in the formulation combined with good wrinkle cream will prolong the youthful appearance of your complexion.

Is collagen in tablets effective?

Collagen in tablets is effective if it contains a good quality raw material and a sufficiently high daily portion. A recommended dietary supplement is, for example, ALLDEYNN Collarose Caps (2600 mg of collagen per serving). This is a good collagen for wrinkles tablet that provides high quality collagen in good amounts.

Does collagen help with hair?

Collagen can support hair as it is one of its building blocks. Adequate amounts of collagen positively affect the quality, thickness and strength of the hair shaft, and can also delay greying.

What's the best time to take collagen to make it work?

Match collagen supplementation to your preferences. The effectiveness of these supplements does not depend on the time of day you drink collagen. It is more important to consume regularly for a minimum of four weeks. Try to make it a habit to be systematic.

What is the best collagen for hair?

The best collagen for hair should contain 2.5g of youth protein and have additional active ingredients such as vitamin C or hyaluronic acid, which promote collagen uptake and internal production. If you want to externally improve the condition of your hair, opt for a collagen treatment from your hairdresser or buy good quality hair conditioners.

Does collagen help with acne?

Collagen by itself will not cure acne, but it will aid in the skin regeneration process. If you want to strengthen your skin and regain its healthy appearance, consider collagen as a supplement.

Sources

See all

A Novel Facial Cream Based on Skin-penetrable Fibrillar Collagen Microparticles-PubMed. (n.d.). Retrieved 4 July 2023, from https://pubmed.ncbi.nlm.nih.gov/35642230/

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Aguirre-Cruz, G., León-López, A., Cruz-Gómez, V., Jiménez-Alvarado, R., & Aguirre-Álvarez, G. (2020). Collagen Hydrolysates for Skin Protection: Oral Administration and Topical Formulation. Antioxidants (Basel, Switzerland), 9(2), 181. https://doi.org/10.3390/antiox9020181

Al-Atif, H. (2022). Collagen Supplements for Aging and Wrinkles: A Paradigm Shift in the Fields of Dermatology and Cosmetics. Dermatology Practical & Conceptual, 12(1), e2022018. https://doi.org/10.5826/dpc.1201a18

Bello, Alfonso E., and Steffen Oesser. "Collagen hydrolysate for the treatment of osteoarthritis and other joint disorders:a review of the literature". Current Medical Research and Opinion 22, no. 11 (November 1, 2006): 2221–32. https://doi.org/10.1185/030079906X148373.

Bolke, L., Schlippe, G., Gerß, J., & Voss, W. (2019). A Collagen Supplement Improves Skin Hydration, Elasticity, Roughness, and Density: Results of a Randomized, Placebo-Controlled, Blind Study. Nutrients, 11(10), 2494. https://doi.org/10.3390/nu11102494

Bakilan, F., Armagan, O., Ozgen, M., Tascioglu, F., Bolluk, O., & Alatas, O. (2016). Effects of Native Type II Collagen Treatment on Knee Osteoarthritis: A Randomized Controlled Trial. The Eurasian Journal of Medicine, 48(2), 95-101. https://doi.org/10.5152/eurasianjmed.2015.15030

Boyera, N., Galey, I., & Bernard, B. A. (1998). Effect of vitamin C and its derivatives on collagen synthesis and cross-linking by normal human fibroblasts. International Journal of Cosmetic Science, 20(3), 151-158. https://doi.org/10.1046/j.1467-2494.1998.171747.x

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Clark, Kristine L., Wayne Sebastianelli, Klaus R. Flechsenhar, Douglas F. Aukermann, Felix Meza, Roberta L. Millard, John R. Deitch, Paul S. Sherbondy, and Ann Albert. "24-Week Study on the Use of Collagen Hydrolysate as a Dietary Supplement in Athletes with Activity-Related Joint Pain". Current Medical Research and Opinion 24, no. 5 (May 2008): 1485–96. https://doi.org/10.1185/030079908x291967.

Clifford, Tom, Matthew Ventress, Dean M. Allerton, Sarah Stansfield, Jonathan C. Y. Tang, William D. Fraser, Barbara Vanhoecke, Janne Prawitt, and Emma Stevenson. "The Effects of Collagen Peptides on Muscle Damage, Inflammation and Bone Turnover Following Exercise: A Randomized, Controlled Trial". Amino Acids 51, no. 4 (April 2019): 691–704. https://doi.org/10.1007/s00726-019-02706-5.

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Davis, M. E., Gumucio, J. P., Sugg, K. B., Bedi, A., & Mendias, C. L. (2013). MMP inhibition as a potential method to augment the healing of skeletal muscle and tendon extracellular matrix. Journal of Applied Physiology, 115(6), 884-891. https://doi.org/10.1152/japplphysiol.00137.2013

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König, D., Oesser, S., Scharla, S., Zdzieblik, D., & Gollhofer, A. (2018). Specific Collagen Peptides Improve Bone Mineral Density and Bone Markers in Postmenopausal Women-A Randomized Controlled Study. Nutrients, 10(1), Article 1. https://doi.org/10.3390/nu10010097

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