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Collagen, glucosamine and chondroitin tablets — the classic joint trio
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Collagen: What It Is, What the Evidence Shows and How to Choose a Supplement
Also known as Hydrolysed collagen, collagen peptides, type II collagen
BioMedic Africa Editorial Desk
Published 29 August 2026 · Last updated 29 August 2026 ·
Editorial policy
Collagen is the most-purchased structural supplement in the world, and the one where reading the type matters most. Type I and III peptides and undenatured type II are sold for different reasons entirely.
What is collagen?
Collagen is the main structural protein in skin, tendon, bone and cartilage. Supplement collagen is hydrolysed into short peptides, or supplied as undenatured type II collagen at very low doses.
Sources include bovine hide, porcine skin, fish skin and scales, and chicken sternum cartilage.
Traditional and regional use
Long-simmered bone and trotter broths have supplied collagen-derived gelatine in African and global cooking for generations. Standardised peptide powders are recent.
What does the research say?
Evidence, not endorsement. What follows describes published research about the ingredient. It is not a claim about any specific product, and no supplement containing this ingredient may claim to treat a disease.
Trials of hydrolysed collagen peptides for skin elasticity and hydration have reported small improvements, though many are industry-funded.
For joints, both hydrolysed collagen at gram doses and undenatured type II collagen at 40 mg have been studied, with modest reported effects on comfort and function.
Collagen is a protein: it is digested into amino acids and peptides, so the idea that it travels intact to a specific tissue is an oversimplification.
How is it used in supplements?
Collagen appears in joint formulas, skin and beauty products, and sports recovery blends. Doses range from 40 mg (undenatured type II) to 10 g (hydrolysed peptides).
Forms and sources
- Hydrolysed collagen peptides (types I and III) as powder
- Undenatured type II collagen at low milligram doses
- Marine collagen
- Gelatine from cooking
Safety
- Well tolerated in trials; it is a food protein.
- People with fish or bovine sensitivities should check the source.
- Halal and kosher considerations apply to porcine and non-certified bovine sources.
Possible side effects
Mild digestive discomfort; some products have a noticeable taste.
Interactions
No documented drug interactions.
Who should seek professional advice
People with specific dietary or religious requirements about animal sources.
How to choose a supplement containing collagen
- Identify the collagen type and dose — 40 mg of undenatured type II and 10 g of peptides are entirely different products.
- Check the animal source for dietary or religious suitability.
- Vitamin C is often added because it is required for the body’s own collagen synthesis.
Products containing collagen
Products documented in African markets whose supplier material names this ingredient.
Nigeria
FlexiCore
Collagen type II, glucosamine and chondroitin joint capsules for Nigeria
₦49,000
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Frequently asked questions
Does eating collagen build collagen?
It is digested into amino acids and peptides like any protein. Some peptides do appear in the bloodstream, and trials report modest effects, but the mechanism is not as direct as marketing suggests.
Type I or type II for joints?
Undenatured type II is the form studied specifically for joints at low doses. Hydrolysed types I and III have also been studied for joints at much higher doses.
Related ingredients
References
Medical disclaimer. BioMedic Africa publishes consumer health information and supplement research summaries. It is not a pharmacy, a clinic or a medicines regulator, and nothing here is a diagnosis, a prescription or a treatment plan. Dietary supplements are foods, not medicines: they are not intended to diagnose, treat, cure or prevent any disease. Speak with a pharmacist or a qualified healthcare professional before starting any supplement, especially if you are pregnant or breastfeeding, under 18, living with a long-term condition, or taking prescription medication.