Men should take collagen for the same reason they take creatine and whey: it is a protein with specific, trial-backed effects on the tissues training breaks down. In men, 15g of collagen peptides a day alongside resistance training produced more strength and lean mass than training alone. 5g to 10g a day reduced activity-related joint pain. 5g with calf training made Achilles tendons measurably bigger and stiffer. None of that has anything to do with the pink packaging collagen usually comes in.
Men lose collagen at roughly 1% a year from their mid-twenties, steadily rather than the cliff women hit at menopause, which is why the aches, slower recovery and thinner skin arrive gradually and get blamed on age. This guide covers what collagen does for men by goal, the doses that worked in trials on men, and the honest answer on hair.
Quick answer: collagen for men
- Strength and lean mass: 15g daily with resistance training, 12 weeks (trials in men aged 24 to 72)
- Joints: 5g to 10g daily, 12 to 24 weeks
- Tendons: 5g to 15g before loading, 3 to 6 months
- Recovery: 20g daily reduced soreness within 9 days
- Skin: 2.5g to 10g, 8 to 12 weeks (most trials in women, mechanism identical)
- Hair: no trial evidence for regrowth; supports the building blocks only
Strength and muscle: the trials in men
Two trials matter here. Zdzieblik 2015 gave 53 older men with sarcopenia 15g of collagen peptides or placebo daily alongside resistance training three times a week for 12 weeks. The collagen group gained significantly more fat-free mass and strength and lost more fat. Kirmse 2019 repeated the design in 57 recreationally active young men: 15g collagen plus training produced greater gains in fat-free mass and type II muscle fibre size than training with placebo.
Collagen is low in leucine, so it is not a replacement for whey or a complete protein; the effect appears to come from its glycine and proline content supporting the connective tissue inside muscle, plus the extra total protein. The practical takeaway: keep your complete protein, add 15g to 20g of collagen on top. See collagen vs whey for how they fit together.
Joints and tendons: where men get the most value
Most men who start collagen do it because something hurts. The evidence is good here. In the Clark 2008 trial, 147 athletes with joint pain took 10g of collagen hydrolysate daily for 24 weeks and reported less pain at rest and during activity than placebo, with the strongest effect in knees. In Zdzieblik 2017, 5g daily for 12 weeks reduced activity-related knee discomfort. For tendons, Jerger 2022 gave young men 5g of collagen daily with calf training for 14 weeks and measured a greater increase in Achilles cross-sectional area and stiffness than training alone. The Praet Achilles tendinopathy trial and the Dressler ankle instability trial add to the picture.
The protocol for all of it is the same: 10g to 20g of hydrolysed collagen 30 to 60 minutes before you train, every day, for at least 12 weeks. Full detail in does collagen help joint pain and collagen for tendonitis.
Recovery between sessions
Clifford 2019 gave 24 active men 20g of collagen peptides or placebo daily for 9 days around a bout of muscle-damaging exercise. The collagen group reported less soreness and recovered jump performance faster. This is the one benefit that shows inside two weeks, and it needs the full 20g.
Skin for men: same biology, fewer trials
The skin trials were mostly in women, but skin collagen loss with age happens in both sexes and the mechanism is identical. 2.5g to 10g daily for 8 to 12 weeks improved elasticity and hydration. Men's skin is thicker and loses collagen more gradually, so expect a slower, subtler change. Sun exposure is the biggest driver of visible ageing in men, so collagen plus sunscreen beats either alone.
Collagen and hair loss in men: the honest answer
Male pattern hair loss is driven by DHT sensitivity in the follicle. Collagen does not affect DHT and there is no trial showing collagen regrows hair or slows male pattern baldness. What collagen does supply is the amino acids keratin is built from and support for the dermis follicles sit in, so it may help hair quality on a diet low in protein. If hair loss is the goal, the evidence points to finasteride, minoxidil and a dermatologist, not collagen. We would rather say that than sell you a sachet for the wrong reason.
Collagen and testosterone
Collagen has no effect on testosterone in either direction. It is a food protein. Claims that glycine or collagen "boost" testosterone are not supported by human trials.
How much collagen should a man take?
| Goal | Daily dose from trials in men | Timing | Judge at |
|---|---|---|---|
| Strength and lean mass | 15g with resistance training | Around training | 12 weeks |
| Joint pain | 5g to 10g | Before training | 12 to 24 weeks |
| Tendon size and pain | 5g to 15g | 30 to 60 min before loading | 3 to 6 months |
| Soreness and recovery | 20g | Daily | 2 weeks |
| Skin | 2.5g to 10g | Any | 12 weeks |
One 20g sachet covers every line. Because collagen is incomplete, keep it to about a third of total daily protein and get the rest from meat, fish, eggs, dairy or a complete plant source.
The simplest stack for men who train
- Creatine monohydrate, 5g daily for strength, power and, increasingly, cognition.
- Hydrolysed collagen, 10g to 20g daily for tendons, joints, recovery and skin, taken before training.
- Complete protein at 1.6g to 2.2g per kg from food or whey.
KUDU Collagen + Creatine puts the first two into one sachet: 5g creatine, 10g collagen and vitamin C, 44 calories, Informed Sport certified. On heavy days add a 20g liquid collagen shot, ready to drink, 0g sugar, 85 calories.
Try Collagen + Creatine, first box 50% off →
Collagen for men: FAQs
Is collagen good for men?
Yes. Trials in men show more strength and lean mass with 15g plus resistance training, less joint pain at 5g to 10g, larger tendons at 5g with loading, and faster recovery at 20g.
How much collagen should a man take a day?
10g to 20g of hydrolysed collagen. 15g is the dose the strength trials used; 20g is the recovery dose. Keep it to about a third of total protein.
Does collagen help men's hair?
There is no trial showing collagen regrows hair or slows male pattern baldness. It supplies the amino acids hair is built from, nothing more.
Does collagen affect testosterone?
No. Collagen is a dietary protein with no effect on hormones.
Should men take collagen or whey?
Both. Whey is a complete protein for muscle protein synthesis; collagen is the protein for tendons, ligaments, joints and skin. They do different jobs.
Related reading
- Collagen and creatine together
- Collagen vs whey protein
- Does collagen help joint pain?
- Best protein sources for muscle recovery
Sources
- Zdzieblik D et al. Collagen peptide supplementation in combination with resistance training improves body composition and increases muscle strength in elderly sarcopenic men. Br J Nutr 2015.
- Kirmse M et al. Prolonged collagen peptide supplementation and resistance exercise training affects body composition in recreationally active men. Nutrients 2019.
- Clark KL et al. 24-week study on collagen hydrolysate in athletes with activity-related joint pain. Curr Med Res Opin 2008.
- Jerger S et al. Specific collagen peptide supplementation combined with resistance training and Achilles tendon properties. Scand J Med Sci Sports 2022.
- Clifford T et al. Collagen peptides, muscle damage and recovery. Amino Acids 2019.
