Collagen Supplements: Benefits, Dosage & Who Should Take Them
Quick answer: Collagen is the most abundant protein in your body, making up skin, bone, tendon and cartilage. Most research supports 2.5-15g of collagen peptides per day – around 2.5-10g for skin and 5-15g for joints and bones. Benefits build with consistent daily use over 8-12 weeks, not overnight.
If you train hard, are over 30, or care about skin, joints and recovery, collagen is one of the better-evidenced supplements you can add. Here’s what it does and how to use it properly.
What is collagen?
Collagen is a structural protein – the “scaffolding” that holds your body together. It accounts for a large share of the protein in skin, bones, tendons, ligaments and cartilage. Your body makes its own, but natural production declines from your mid-20s onwards, which is part of why skin loses elasticity and joints feel stiffer with age.
Supplements use hydrolysed collagen (collagen peptides) – collagen broken into smaller fragments that dissolve easily and are absorbed efficiently.
The collagen types explained
Not all collagen is the same. The type determines what it’s best for:
- Type I – about 90% of the body’s collagen. Found in skin, bone and tendons. Best for skin, hair, nails and bone health.
- Type II – the main collagen in cartilage. Best for joint and cartilage support. Often used in a special “undenatured” form (UC-II).
- Type III – found alongside Type I in skin, muscle and blood vessels. Supports skin structure and recovery.
Most marine and bovine peptide powders are rich in Types I and III, making them the go-to for skin and general use.
How much collagen should you take per day?
Dosage depends on your goal:
| Goal | Form | Typical daily dose |
|---|---|---|
| Skin, hair & nails | Type I/III peptides | 2.5-10g |
| Joints & bones | Type I/III peptides | 5-15g |
| Targeted joint support | Undenatured Type II (UC-II) | ~40mg |
The key difference catches people out: standard peptides are dosed in grams, but undenatured Type II (UC-II) works at a tiny ~40mg dose because it acts on the immune system differently. Always follow the label for the specific product.
What does the evidence show?
The strongest research is for skin and joints. Studies report that consistent collagen supplementation can improve skin moisture, hydration and elasticity, and reduce joint pain and improve recovery – particularly when combined with resistance training. Benefits typically appear after 8-12 weeks of daily use, so patience matters.
Who should take collagen?
Collagen is worth considering if you:
- Are over 30, when natural production has started to slow.
- Train regularly and want connective-tissue and recovery support.
- Care about skin, hair and nail appearance.
- Have joint stiffness or are recovering from training load.
It’s a popular choice in women’s wellness routines, but it’s equally useful for any lifter whose joints take a pounding.
How to take it for best results
- Be consistent. Daily use beats occasional large doses – collagen works cumulatively.
- Pair with vitamin C. Your body needs vitamin C to synthesise collagen, so a serving alongside fruit or a greens supplement helps.
- Mix it anywhere. Unflavoured peptides dissolve into coffee, shakes or water. Some people take it in the evening to pair with overnight recovery and better sleep.
Shop collagen
Browse our range of collagen supplements – peptides for skin and joints – or explore broader health & wellbeing products to build a complete routine.
Frequently asked questions
How much collagen per day should I take?
2.5-15g of collagen peptides daily depending on your goal: 2.5-10g for skin, 5-15g for joints and bones. Undenatured Type II is dosed much lower, around 40mg.
How long until collagen works?
Most studies show visible skin and joint benefits after 8-12 weeks of consistent daily use.
Which collagen type is best?
Type I for skin, hair and bone; Type II for cartilage and joints; Type III supports skin and recovery. Type I/III peptides suit most general users.
Can I take collagen with protein powder?
Yes. Collagen complements whey or beef protein – but it’s low in some essential amino acids, so it shouldn’t be your only protein source.
Final thoughts
Collagen is a well-tolerated, well-evidenced supplement for skin, joints and connective tissue – provided you take a 2.5-15g daily dose consistently and give it a couple of months to work. Match the type to your goal and pair it with vitamin C for the best return.
This article is for general information and isn’t medical advice. Speak to a healthcare professional if you have a medical condition or are pregnant.
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