Primal Multi Collagen

MULTI COLLAGEN FORMULA WITH ALL 5 ESSENTIAL TYPES

149 reviews
Primal Multi Collagen Primal Multi Collagen Primal Multi Collagen Primal Multi Collagen Primal Multi Collagen Primal Multi Collagen

MULTI COLLAGEN FORMULA WITH ALL 5 ESSENTIAL TYPES

  • Supports hair, skin, nails, joints, and gut health*
  • Features all 5 essential collagen types (I, II, III, X, and V)
  • Food-derived hydrolyzed collagen from 4 premium sources (bovine, chicken, eggshell membrane, and fish collagen)
  • Easy-to-swallow capsules with no unpleasant tastes or smells
  • Sustainably sourced and made without gluten, dairy, or soy
  • USA-made in our GMP-certified facility
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Primal Multi Collagen

149 reviews
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MULTI COLLAGEN FORMULA WITH ALL 5 ESSENTIAL TYPES

  • Supports hair, skin, nails, joints, and gut health*
  • Features all 5 essential collagen types (I, II, III, X, and V)
  • Food-derived hydrolyzed collagen from 4 premium sources (bovine, chicken, eggshell membrane, and fish collagen)
  • Easy-to-swallow capsules with no unpleasant tastes or smells
  • Sustainably sourced and made without gluten, dairy, or soy
  • USA-made in our GMP-certified facility
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6 Core Benefits Of Our
MULTI COLLAGEN CAPSULES
MULTI COLLAGEN CAPSULES
Formulated with the ultimate blend of all 5 essential collagen types, our Multi Collagen capsules make getting your daily collagen more convenient, simple, and enjoyable than ever before.
This Multi Collagen formula supports healthy skin from within and may enhance skin elasticity, minimize fine lines and wrinkles, boost hydration, and promote vibrant skin for a youthful, glowing complexion.*
We’ve included types I, II, and III hydrolyzed collagen to deliver essential multi collagen peptides to help your hair and nails stay healthy, strong, and resilient to breakage.*
To ensure you get the most from your daily collagen, we’ve included all 5 essential collagen types for optimal wellness (I, II, III, X, and V) from four premium food-derived sources: eggshell membrane, bovine, fish, and chicken collagen.*
Designed to support optimal daily performance, this Multi Collagen features type V & X hydrolyzed collagen from eggshell membrane to support healthy bones, joints, and a balanced gut.*
These important digestive enzymes are produced by your pancreas. They help your body absorb and utilize the essential amino acids in collagen required for tissue building and maintenance.*
MULTI COLLAGEN CAPSULES
HOW WILL I BENEFIT OVER TIME?
Everybody is unique and we all respond differently to changes in our wellness routines. It may take time to see results. Like with any healthy habit, commitment and consistency go a long way when it comes to realizing your wellness goals.
BENEFIT WHEN TAKEN
DAILY FOR 1 MONTH:
Many customers report enhanced hair, skin, and nail quality and appearance.*
BENEFIT WHEN TAKEN
DAILY FOR 2 MONTHS:
Many customers report feeling even more wellness benefits, such as improved skin quality, nail growth, and gut support.*
BENEFIT WHEN TAKEN
DAILY FOR 3+ MONTHS:
Many customers report benefits in the quality of their gut, skin, hair, nail, and joint wellness.*
Effects
MULTI COLLAGEN AS A SUBSCRIPTION
EVERY 30 DAYS TO YOUR HOME
Reaping the maximum benefits from our supplements has never been so simple. With our easy and convenient subscription service you can have your Multi Collagen capsules delivered right to your front door every month.
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NATURE'S BEST FOR YOU
COMPLETE INGREDIENT TRANSPARENCY
Expertly formulated with highly bioavailable hydrolyzed collagen types I, II, III, IV, and V from premium natural sources including bovine, chicken, fish, and eggshell membrane. This collagen blend also features a premium enzyme blend for better absorption and maximum potency.*
HOW TO USE
HOW TO USE

Adults, as a dietary supplement, take four capsules daily, preferably with a light meal and water, or as recommended by your healthcare provider.

For best results, combine with a healthy routine that includes balanced meals, exercise, water, and plenty of rest.

SUPPLEMENT FACTS
SUPPLEMENT FACTS
Supplement facts per serving

Multi Collagen Blend (Hydrolyzed Bovine Collagen, Hydrolyzed Chicken Collagen, Hydrolyzed Fish Collagen, Eggshell Membrane), Enzyme Blend (Trypsin, Amylase, Protease, Glucoamylase, Lipase, Cellulose), Vitamin C. 

Other Ingredients: Gelatin (Capsules), Magnesium Stearate, Silicon Dioxide, Microcrystalline Cellulose).

1. As your body adapts to your new supplement routine, it’s important to remember that every individual is different and health benefits may vary from person to person. Always consult with your physician before using this or any other product if you have a preexisting condition or take prescription medication.

2. If you are pregnant, nursing, taking medication, or have an existing condition, be sure to consult with your physician before taking this or any other dietary supplement.

CORE INGREDIENTS

This thin, delicate lining found within the eggshell is packed with essential amino acids that are considered extremely important for healthy bones, joints, and skin.*

Featuring hydrolyzed collagen types V & X, eggshell membranes provide an excellent source of wellness-supporting collagen to help keep you moving comfortably through life.*

Type I & III hydrolyzed collagen proteins, the two most commonly-found types in the human body, work together in this powerful Multi Collagen formula to support radiant hair, skin, nails, and overall wellness.* 

Sourced from premium food-derived fish and bovine collagen, these types are highly beneficial for skin health and may help support skin elastin, smooth fine lines and wrinkles, and promote a youthful-looking complexion.*

Often referred to as the “joint support” collagen, type II collagen is the primary foundation of the cartilage that protects your joints.*

Hydrolyzed chicken collagen is considered to be one of the best sources of bone and joint-supporting type II collagen for supporting an active lifestyle and promoting comfortable movement.*

CORE INGREDIENTS
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Filter Reviews:
AM
01/25/2023
Aurora M.
United States United States

Great product!

I've been using multi-collagen for a month now and I've already noticed a difference. My skin is clearer and my nails are stronger. Great product!

Primal Harvest Primal Multi Collagen Review
LH
01/18/2023
Lisa H.
United States United States

Great stuff!

I’ve been using the Multi Collagen for several months now and I absolutely love it!! I’ve noticed a big difference in my skin, hair and finger nails. I highly recommend it!!

Primal Harvest Primal Multi Collagen Review
A
01/05/2023
Anonymous
United States United States

OMG...it really works!

I used to have arthritic knee pain...that was until I started taking a daily dose of the Multi-Collagen. Now sometimes I forget I even have knees! Once I didn't order it and after about 4 - 5 days, the knee pain started to resurface. So I immediately set up a subscription for the monthly delivery as I don't ever want to be without it. I have recommended it to several friends and family members. Great product!!

Primal Harvest Primal Multi Collagen Review
MM
10/18/2022
Michelle M.
United States United States

Using collagen from PrimalHarvest

After 1 month my joints are not hurting and I can walk 5 now…YAY! My hair is growing faster and my nails are stronger!

Primal Harvest Primal Multi Collagen Review
LE
08/25/2022
Laurianne E.
United States United States

Primal Multi Collagen is the best

It definately helped with my hair loss and thinning that all of a sudden happened about 8 months ago. Plus my nails are much stronger and my skin is clearer. Thanks

Primal Harvest Primal Multi Collagen ReviewPrimal Harvest Primal Multi Collagen Review
Primal Harvest
FREQUENTLY ASKED QUESTIONS

Collagen is the most abundant protein in the body and provides the structure and building blocks for hair, skin, nails, bones, tendons, ligaments, and more. It is one of the most vital nutrients supporting many of the body’s functions and overall wellness. As we age, we begin to lose more and more essential collagen each year.*

Our Multi Collagen capsules are made in the USA with premium hydrolyzed collagen sources from all five essential collagen types (I, II, III, X, and V).

It’s a simple yet effective formula for daily wellness support to help you support your hair, skin, nails, joint, bone, and gut health. It’s an excellent option for anyone seeking to enjoy the benefits of collagen supplements in a convenient capsule form.*

Type I collagen is the strongest and the most abundant protein found in the human body (and in all vertebrates). As the primary building block of your skin, type I is considered the most beneficial collagen protein type for supporting healthy skin as we age. Eggshell membranes, bovine, and marine collagen are all excellent sources of type I collagen.*

Type II collagen, often referred to as the “joint support” collagen, is the primary foundation of the cartilage that protects our joints. Hydrolyzed chicken collagen is considered to be one of the best sources of bone and joint-supporting type II collagen.*

Type III collagen is usually associated with type I collagen and together, this multi collagen pair makes up the two most commonly-found types in the human body. Also highly beneficial for supporting a healthy complexion, type III collagen is one of the primary building blocks of our organs and skin, and can be found in abundance in bovine sources.*

Type V collagen is a form of fibrillar collagen that can be found alongside type II collagen in joint-supporting cartilage. As a minor collagen component, it plays a fundamental role in the interstitial matrix of our muscles, lungs, liver, and bone matrix. Similarly to type I & X, type V collagen can be found in abundance in eggshell membranes.*

Type X collagen is often known as a “network-forming” collagen and, found within our cartilage, it is fundamental for new bone formation in articular cartilage (the healthy, friction-preventing cartilage in our joints that makes it easier to move). Similarly to type I & V collagen, type X can be found in abundance in eggshell membranes.*

You can use this product in the morning, afternoon, evening or even right before bed. There is no specific time to take Multi Collagen, but in general, you will maximize the benefits of the product by taking it consistently. Find a time that works best for you!

Each bottle of Multi Collagen contains 30 servings (120 capsules), or a one-month supply if used daily.

This product contains hydrolyzed bovine, chicken and fish collagen, and is manufactured in a facility that also processes tree nuts, peanuts, wheat, and soy. Always review the details on the product label for the most accurate information and when in doubt, we always recommend consulting with a personal physician regarding existing allergies or health concerns.

This product is intended for use by healthy adults over the age of 18. If you have a pre-existing condition, take prescription medications, or have any medical concerns, we always recommend consulting with your personal physician before starting a new supplement routine.

For maximum effectiveness and shelf life, please store your Multi Collagen capsules in a cool, dry place away from moisture, direct sunlight, and extreme temperatures.

If stored properly and unopened, Multi Collagen should generally retain its shelf life for about two years. Once opened, we recommend using the product within 90 days for maximum effectiveness. Each bottle contains a 30-day supply if taken daily.

This is totally up to you! Since consistency is the key to maximum benefits, we recommend taking advantage of our discounts when you purchase 6 or more containers of our Multi Collagen formula. You are always protected by our 90-day money-back guarantee, which allows for plenty of time to try our Multi Collagen protein capsules and see if it is the right fit for you..

If you are using a discount code, please note that your discount code cannot be combined with any other offer or discount code and excludes all sale items and subscription purchases.

Our Multi Collagen capsules are formulated and manufactured in the USA in a GMP-certified facility (Good Manufacturing Practices) according to the highest safety and quality regulations. It is independently third party lab-tested in the USA and is formulated with premium globally sourced ingredients (both domestic and imported) to ensure we use only the best ingredients available worldwide.†

*These statements have not been evaluated by the FDA Food & Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease. The information provided by this website or this company is not a substitute for a face-to-face consultation with your physician and should not be construed as individual medical advice. The testimonials on this website are individual cases and do not guarantee that you will get the same results. All content, including text, graphics, images and information, contained on or available through this web site is for general information purposes only.

NEW THERAPEUTIC STRATEGY FOR AMINO ACID MEDICINE: GLYCINE IMPROVES THE QUALITY OF SLEEP

Bannai M, Kawai N. New therapeutic strategy for amino acid medicine: glycine improves the quality of sleep. J Pharmacol Sci. 2012;118(2):145-148. doi:10.1254/jphs.11r04fm. 

COLLAGEN HYDROLYSATE FOR THE TREATMENT OF OSTEOARTHRITIS AND OTHER JOINT DISORDERS: A REVIEW OF THE LITERATURE

Bello AE, Oesser S. Collagen hydrolysate for the treatment of osteoarthritis and other joint disorders: a review of the literature. Curr Med Res Opin. 2006;22(11):2221-2232. doi:10.1185/030079906X148373.  

A COLLAGEN SUPPLEMENT IMPROVES SKIN HYDRATION, ELASTICITY, ROUGHNESS, AND DENSITY: RESULTS OF A RANDOMIZED, PLACEBO-CONTROLLED, BLIND STUDY

Bolke L, Schlippe G, Gerß J, Voss W. A Collagen Supplement Improves Skin Hydration, Elasticity, Roughness, and Density: Results of a Randomized, Placebo-Controlled, Blind Study. Nutrients. 2019;11(10):2494. Published 2019 Oct 17. doi:10.3390/nu11102494.  

DAILY CONSUMPTION OF THE COLLAGEN SUPPLEMENT PURE GOLD COLLAGEN® REDUCES VISIBLE SIGNS OF AGING

Borumand M, Sibilla S. Daily consumption of the collagen supplement Pure Gold Collagen® reduces visible signs of aging [published correction appears in Clin Interv Aging. 2020 Feb 04;15:131]. Clin Interv Aging. 2014;9:1747-1758. Published 2014 Oct 13. doi:10.2147/CIA.S65939. 

COLLAGEN PEPTIDES AMELIORATE INTESTINAL EPITHELIAL BARRIER DYSFUNCTION IN IMMUNOSTIMULATORY CACO-2 CELL MONOLAYERS VIA ENHANCING TIGHT JUNCTIONS

Chen Q, Chen O, Martins IM, et al. Collagen peptides ameliorate intestinal epithelial barrier dysfunction in immunostimulatory Caco-2 cell monolayers via enhancing tight junctions. Food Funct. 2017;8(3):1144-1151. doi:10.1039/c6fo01347cu-Xue Zhao-Jeffrey Blumberg-Bafang Li - https://www.ncbi.nlm.nih.gov/pubmed/28174772.  

ORAL COLLAGEN SUPPLEMENTATION: A SYSTEMATIC REVIEW OF DERMATOLOGICAL APPLICATIONS

Choi FD, Sung CT, Juhasz ML, Mesinkovsk NA. Oral Collagen Supplementation: A Systematic Review of Dermatological Applications. J Drugs Dermatol. 2019;18(1):9-16. 

24-WEEK STUDY ON THE USE OF COLLAGEN HYDROLYSATE AS A DIETARY SUPPLEMENT IN ATHLETES WITH ACTIVITY-RELATED JOINT PAIN

Clark KL, Sebastianelli W, Flechsenhar KR, et al. 24-Week study on the use of collagen hydrolysate as a dietary supplement in athletes with activity-related joint pain. Curr Med Res Opin. 2008;24(5):1485-1496. doi:10.1185/030079908x291967. 

TYPE X COLLAGEN, A NATURAL COMPONENT OF MOUSE ARTICULAR CARTILAGE: ASSOCIATION WITH GROWTH, AGING, AND OSTEOARTHRITIS

Eerola I, Salminen H, Lammi P, et al. Type X collagen, a natural component of mouse articular cartilage: association with growth, aging, and osteoarthritis. Arthritis Rheum. 1998;41(7):1287-1295. doi:10.1002/1529-0131(199807)41:7<1287::AID-ART20>3.0.CO;2-D.  

ENHANCEMENT OF DIETARY PROTEIN DIGESTION BY CONJUGATED BILE ACIDS

Gass J, Vora H, Hofmann AF, Gray GM, Khosla C. Enhancement of dietary protein digestion by conjugated bile acids. Gastroenterology. 2007;133(1):16-23. doi:10.1053/j.gastro.2007.04.008. 

A DOUBLE-BLIND, PLACEBO-CONTROLLED, RANDOMISED, CLINICAL STUDY ON THE EFFECTIVENESS OF COLLAGEN PEPTIDE ON OSTEOARTHRITIS

Kumar S, Sugihara F, Suzuki K, Inoue N, Venkateswarathirukumara S. A double-blind, placebo-controlled, randomised, clinical study on the effectiveness of collagen peptide on osteoarthritis. J Sci Food Agric. 2015;95(4):702-707. doi:10.1002/jsfa.6752. 

SPECIFIC COLLAGEN PEPTIDES IMPROVE BONE MINERAL DENSITY AND BONE MARKERS IN POSTMENOPAUSAL WOMEN-A RANDOMIZED CONTROLLED STUDY

König D, Oesser S, Scharla S, Zdzieblik D, Gollhofer A. Specific Collagen Peptides Improve Bone Mineral Density and Bone Markers in Postmenopausal Women-A Randomized Controlled Study. Nutrients. 2018;10(1):97. Published 2018 Jan 16. doi:10.3390/nu10010097. 

CHAPTER 5 - TYPE V COLLAGEN

Leeming, D.J, and M.A Karsdal. Chapter 5 - Type V Collagen. In Biochemistry of Collagens, Laminins and Elastin, Elsevier Inc, 2016: 43–48. doi:10.1016/B978-0-12-809847-9.00005-2. 

HYDROLYZED COLLAGEN-SOURCES AND APPLICATIONS

León-López A, Morales-Peñaloza A, Martínez-Juárez VM, Vargas-Torres A, Zeugolis DI, Aguirre-Álvarez G. Hydrolyzed Collagen-Sources and Applications. Molecules. 2019;24(22):4031. Published 2019 Nov 7. doi:10.3390/molecules24224031.  

UNDENATURED TYPE II COLLAGEN (UC-II®) FOR JOINT SUPPORT: A RANDOMIZED, DOUBLE-BLIND, PLACEBO-CONTROLLED STUDY IN HEALTHY VOLUNTEERS

Lugo JP, Saiyed ZM, Lau FC, et al. Undenatured type II collagen (UC-II®) for joint support: a randomized, double-blind, placebo-controlled study in healthy volunteers. J Int Soc Sports Nutr. 2013;10(1):48. Published 2013 Oct 24. doi:10.1186/1550-2783-10-48.  

EFFICACY AND TOLERABILITY OF AN UNDENATURED TYPE II COLLAGEN SUPPLEMENT IN MODULATING KNEE OSTEOARTHRITIS SYMPTOMS: A MULTICENTER RANDOMIZED, DOUBLE-BLIND, PLACEBO-CONTROLLED STUDY

Lugo, J.P., Saiyed, Z.M. & Lane, N.E. Efficacy and tolerability of an undenatured type II collagen supplement in modulating knee osteoarthritis symptoms: a multicenter randomized, double-blind, placebo-controlled study. Nutr J 15, 14 (2015). https://doi.org/10.1186/s12937-016-0130-8.

ORAL SUPPLEMENTATION OF SPECIFIC COLLAGEN PEPTIDES HAS BENEFICIAL EFFECTS ON HUMAN SKIN PHYSIOLOGY: A DOUBLE-BLIND, PLACEBO-CONTROLLED STUDY

Proksch E, Segger D, Degwert J, Schunck M, Zague V, Oesser S. Oral supplementation of specific collagen peptides has beneficial effects on human skin physiology: a double-blind, placebo-controlled study. Skin Pharmacol Physiol. 2014;27(1):47-55. doi:10.1159/000351376. 

HAIR FOLLICLE DERMAL STEM CELLS REGENERATE THE DERMAL SHEATH, REPOPULATE THE DERMAL PAPILLA, AND MODULATE HAIR TYPE

Rahmani W, Abbasi S, Hagner A, et al. Hair follicle dermal stem cells regenerate the dermal sheath, repopulate the dermal papilla, and modulate hair type. Dev Cell. 2014;31(5):543-558. doi:10.1016/j.devcel.2014.10.022. 

EGGSHELL MEMBRANE IN THE TREATMENT OF PAIN AND STIFFNESS FROM OSTEOARTHRITIS OF THE KNEE: A RANDOMIZED, MULTICENTER, DOUBLE-BLIND, PLACEBO-CONTROLLED CLINICAL STUDY

Ruff KJ, Winkler A, Jackson RW, DeVore DP, Ritz BW. Eggshell membrane in the treatment of pain and stiffness from osteoarthritis of the knee: a randomized, multicenter, double-blind, placebo-controlled clinical study. Clin Rheumatol. 2009;28(8):907-914. doi:10.1007/s10067-009-1173-4. 

BENEFICIAL EFFECTS OF NATURAL EGGSHELL MEMBRANE VERSUS PLACEBO IN EXERCISE-INDUCED JOINT PAIN, STIFFNESS, AND CARTILAGE TURNOVER IN HEALTHY, POSTMENOPAUSAL WOMEN

Ruff KJ, Morrison D, Duncan SA, Back M, Aydogan C, Theodosakis J. Beneficial effects of natural eggshell membrane versus placebo in exercise-induced joint pain, stiffness, and cartilage turnover in healthy, postmenopausal women. Clin Interv Aging. 2018;13:285-295. Published 2018 Feb 19. doi:10.2147/CIA.S153782. 

NUTRITIONAL FACTORS AND HAIR LOSS

Rushton DH. Nutritional factors and hair loss. Clin Exp Dermatol. 2002;27(5):396-404. doi:10.1046/j.1365-2230.2002.01076.x. 

THE ROLE OF TYPE X COLLAGEN IN FACILITATING AND REGULATING ENDOCHONDRAL OSSIFICATION OF ARTICULAR CARTILAGE

Shen G. The role of type X collagen in facilitating and regulating endochondral ossification of articular cartilage. Orthod Craniofac Res. 2005;8(1):11-17. doi:10.1111/j.1601-6343.2004.00308.x. 

MARINE ORIGIN COLLAGENS AND ITS POTENTIAL APPLICATIONS

Silva TH, Moreira-Silva J, Marques AL, Domingues A, Bayon Y, Reis RL. Marine origin collagens and its potential applications. Mar Drugs. 2014;12(12):5881-5901. Published 2014 Dec 5. doi:10.3390/md12125881.  

HYDROLYZED COLLAGEN INTAKE INCREASES BONE MASS OF GROWING RATS TRAINED WITH RUNNING EXERCISE

Takeda S, Park JH, Kawashima E, Ezawa I, Omi N. Hydrolyzed collagen intake increases bone mass of growing rats trained with running exercise. J Int Soc Sports Nutr. 2013;10(1):35. Published 2013 Aug 6. doi:10.1186/1550-2783-10-35. 

DECREASED COLLAGEN PRODUCTION IN CHRONOLOGICALLY AGED SKIN: ROLES OF AGE-DEPENDENT ALTERATION IN FIBROBLAST FUNCTION AND DEFECTIVE MECHANICAL STIMULATION

Varani J, Dame MK, Rittie L, et al. Decreased collagen production in chronologically aged skin: roles of age-dependent alteration in fibroblast function and defective mechanical stimulation. Am J Pathol. 2006;168(6):1861-1868. doi:10.2353/ajpath.2006.051302.  

ENHANCING SKIN HEALTH: BY ORAL ADMINISTRATION OF NATURAL COMPOUNDS AND MINERALS WITH IMPLICATIONS TO THE DERMAL MICROBIOME

Vollmer DL, West VA, Lephart ED. Enhancing Skin Health: By Oral Administration of Natural Compounds and Minerals with Implications to the Dermal Microbiome. Int J Mol Sci. 2018;19(10):3059. Published 2018 Oct 7. doi:10.3390/ijms19103059. 

COMPREHENSIVE ANALYSIS OF PROTEIN DIGESTION USING SIX TRYPSINS REVEALS THE ORIGIN OF TRYPSIN AS A SIGNIFICANT SOURCE OF VARIABILITY IN PROTEOMICS

Walmsley SJ, Rudnick PA, Liang Y, Dong Q, Stein SE, Nesvizhskii AI. Comprehensive analysis of protein digestion using six trypsins reveals the origin of trypsin as a significant source of variability in proteomics. J Proteome Res. 2013;12(12):5666-5680. doi:10.1021/pr400611h

REVIEW OF HAIR FOLLICLE DERMAL CELLS

Yang CC, Cotsarelis G. Review of hair follicle dermal cells. J Dermatol Sci. 2010;57(1):2-11. doi:10.1016/j.jdermsci.2009.11.005. 

CHARACTERIZATION OF COLLAGEN FROM EGGSHELL MEMBRANE

Yu-Hong Zhao and Yu-Jie Chi, 2009. Characterization of Collagen from Eggshell Membrane. Biotechnology, 8: 254-258. doi:10.3923/biotech.2009.254.258. 

AMINO ACID METABOLISM

Blanco A, Blanco G. Amino Acid Metabolism. In: Medical Biochemistry. Elsevier; 2017:367-399. doi:10.1016/B978-0-12-803550-4.00016-1.

ORAL SUPPLEMENTATION WITH SPECIFIC BIOACTIVE COLLAGEN PEPTIDES IMPROVES NAIL GROWTH AND REDUCES SYMPTOMS OF BRITTLE NAILS

Hexsel D, Zague V, Schunck M, Siega C, Camozzato FO, Oesser S. Oral supplementation with specific bioactive collagen peptides improves nail growth and reduces symptoms of brittle nails. J Cosmet Dermatol. 2017;16(4):520-526. doi:10.1111/jocd.12393

COLLAGEN PEPTIDE SUPPLEMENTATION IN COMBINATION WITH RESISTANCE TRAINING IMPROVES BODY COMPOSITION AND INCREASES MUSCLE STRENGTH IN ELDERLY SARCOPENIC MEN: A RANDOMISED CONTROLLED TRIAL

Zdzieblik D, Oesser S, Baumstark MW, Gollhofer A, König D. Collagen peptide supplementation in combination with resistance training improves body composition and increases muscle strength in elderly sarcopenic men: a randomised controlled trial. Br J Nutr. 2015;114(8):1237-1245. doi:10.1017/S0007114515002810.