Does collagen help cyclists?
For the two problems that actually take cyclists off the bike, knee tendon pain and low bone density, the evidence says collagen may help, provided the dose is right and it is used for months rather than days. It will not raise your FTP and it is not a fuel. Cycling is unusual among endurance sports because it is low-impact and non-weight-bearing: that is why you can ride six hours where you could not run two, and it is also why cyclists have the worst bone density of any endurance athletes and why the patellar tendon takes millions of identical loading cycles with no variety at all. Those are precisely the two areas the collagen trials have looked at. This page covers what riding does to connective tissue and bone, the dose and timing the research used, what the trials found (including the one that found nothing) and how a 20g ready-to-drink sachet fits into a cyclist's training week.
What cycling does to connective tissue
A cyclist pedalling at 90 rpm for three hours makes 16,000 revolutions per leg, each one loading the patellar tendon and the quadriceps tendon through the same narrow arc of knee flexion. Nothing else in sport is that repetitive. The result is that anterior knee pain and patellar tendinopathy are the most common overuse complaints in cycling, closely followed by iliotibial band irritation on the outside of the knee, which is aggravated by cleat position and a saddle set too high. The low back is next: hours in a flexed position with the pelvis rotated forward load the lumbar ligaments and the sacroiliac joint, and the neck and upper back hold the head up against a wind. Achilles and plantar problems are rarer than in running but do appear in riders who drop their heel under high torque.
The bigger, quieter problem is bone. Bone adapts to impact and to muscle pulling on it, and cycling provides very little of either. Road and track cyclists consistently show lower bone mineral density at the spine and hip than runners or non-athletes of the same age, and the effect is worse with high training volume, low energy availability and heavy sweat calcium losses. Roughly a third of bone by weight is collagen, and it is the collagen scaffold that gives bone its toughness; that is the mechanism behind the bone trial cited below. A cyclist with a stress reaction or a crash fracture is out for far longer than one with a sore knee, so bone deserves more attention than it usually gets.
The protocol: dose and timing for cyclists
The research protocol is to take 15–20g of hydrolysed collagen with vitamin C 30–60 minutes before the ride or gym session that loads the tissue, and to hold a smaller daily dose on other days for months. For cyclists there is a second timing worth noting: the bone trial used 5g every day for a year, with no exercise timing at all. Consistency is the variable, not the clock.
| When | How much | Why |
|---|
| 30–60 min before intervals, a hard climb session or strength work | 15–20g hydrolysed collagen with vitamin C | Shaw 2017 pre-loading window; Lee 2023 dose-response up to 30g |
| Endurance and recovery rides, rest days | 5–10g | Dose used in the 12-week knee trial and the 12-month bone trial |
| Vitamin C | 50mg or more with the collagen | Cofactor for the enzymes that cross-link new collagen |
| Creatine (track, crit and sprint riders, or anyone lifting) | 3–5g daily | Kreider 2017; supports repeated sprint efforts and gym work |
| Minimum commitment | 8–12 weeks for tendon; 12 months for bone | Zdzieblik 2017 ran 12 weeks; König 2018 ran a year |
Collagen is low in leucine and does not replace whey or food for muscle repair, and it is not a source of carbohydrate for the ride itself. Treat it as a connective-tissue and bone addition on top of normal fuelling. The full breakdown is in collagen dosage for athletes.
What the trials show
Pre-loading. Shaw 2017 gave 15g of gelatin with vitamin C an hour before six minutes of jump-rope exercise and found blood markers of collagen synthesis roughly doubled compared with placebo. Lee 2023 tested 0g, 15g and 30g and found the response scaled with dose. Cycling is not jumping, but the point of those trials is that a tendon under load with amino acids in the blood synthesises more collagen than one without, and a set of hard hill repeats loads the patellar tendon plenty.
Knees. Zdzieblik 2017 is the most cycling-relevant trial: 5g of collagen peptides daily for 12 weeks in young, active adults with activity-related knee pain, with a greater reduction in pain during activity than placebo. Clark 2008 gave 10g of collagen hydrolysate daily for 24 weeks to athletes with joint pain and found significant improvements in pain at rest, walking and lifting. Neither trial is a substitute for a proper bike fit, but both used doses a rider can easily match.
Bone. König 2018 gave 5g of specific collagen peptides daily for 12 months to postmenopausal women with reduced bone density and found bone mineral density increased at the lumbar spine and femoral neck compared with a decline in the placebo group. The population is not cyclists, but the tissue is the same and the dose is small. For a rider with a low DEXA result, this is the study to read.
Tendons and ankles. Jerger 2022 combined 5g daily with 14 weeks of calf strength training and found greater Achilles cross-sectional area than placebo; Praet 2019 found 2.5g daily for six months with eccentric rehab improved Achilles tendinopathy outcomes; Dressler 2018 found 5g daily for six months improved ankle stability in chronic ankle instability. All three are Achilles or ankle trials, so the transfer to the patellar tendon is by mechanism rather than direct evidence.
Soreness and strength. Clifford 2019 gave 20g daily for nine days around damaging exercise and found lower soreness at 48 hours, relevant after a first big sportive or a return to the gym. Zdzieblik 2015, Kirmse 2019 and Jendricke 2019 each paired 15g daily with 12 weeks of resistance training and reported greater gains in fat-free mass and strength, which matters for cyclists who lift in the off-season to protect bone and add sprint power.
The honest null result. Aussieker 2023 gave 30g of collagen protein straight after a resistance session and measured connective-tissue protein synthesis in muscle: no increase compared with placebo. The lesson for cyclists is that post-ride collagen is not an acute recovery tool, and that collagen is not a muscle-building protein. The evidence is for months of use, not a single dose after a ride.
How KUDU fits a cyclist's week
A cyclist already carries bottles, gels and bars, and the last thing anyone wants is a tub of powder on the kitchen counter before a 6 a.m. chain gang. KUDU's 20g Liquid Collagen Protein is a 63ml ready-to-drink sachet: 20,000mg of hydrolysed bovine collagen (type I and III), 85 kcal, 0g sugar, 0g fat, dairy free and gluten free. It fits a jersey pocket, and you drink it while pumping the tyres. Four flavours (Sour Cherry, Peach, Orange, Strawberry & Vanilla), made in the UK, and Informed Sport certified for riders racing under anti-doping rules.
Riders who lift in the off-season, or who race crits and track, can use the Collagen + Creatine sachet on gym days: 10g hydrolysed collagen, 5g creatine monohydrate and vitamin C, 44 kcal, mixed with water, Mixed Berry or Tropical. A box of 14 liquid sachets is £34.95, from £1.99 a sachet on subscription; the £12 Sampler Box covers all four flavours. 60-day money-back guarantee, 4.8 stars from 480+ verified reviews.
A cyclist's weekly collagen plan
| Day type | Collagen | Timing | Notes |
|---|
| Intervals, hill repeats, big-gear work | 20g sachet | 30–60 min before | Highest patellar-tendon load of the week |
| Long endurance ride | 20g sachet | Before rolling out | Then fuel with carbohydrate as normal; collagen is not ride fuel |
| Gym or strength session | C+C sachet or 20g sachet | 30–60 min before | Lifting is the best thing a cyclist can do for bone |
| Recovery ride or rest day | 10g (half a sachet) | Any time | The daily bone dose (König 2018 used 5g) |
| Race or sportive week | 20g daily | Mornings; before the last hard session | Nothing new on the day |
| Off-season | 10g daily plus 20g before gym | Any time | The 12-month bone window runs through winter |
Cycling guides
Collagen for cyclists: FAQs
Should I take collagen before or after a ride?
Before. The pre-loading trials dosed 30–60 minutes before exercise, and Aussieker 2023 found that a large dose after resistance exercise did not raise connective-tissue protein synthesis. Drink it with your pre-ride coffee; save the post-ride window for carbohydrate and a complete protein.
Does collagen help cyclist's knee?
It may. Zdzieblik 2017 found 5g a day for 12 weeks reduced activity-related knee pain in young active adults. But anterior knee pain in cyclists is usually a bike-fit problem first (saddle height, cleat position, crank length), so get the fit checked and use collagen to support the tendon while you build back volume.
Is collagen good for bone density in cyclists?
The best evidence is König 2018: 5g a day for 12 months improved bone mineral density at the spine and hip in postmenopausal women. Cyclists are a different population, but they are also the endurance athletes most at risk of low bone density, so a small daily dose alongside strength training, adequate calcium and vitamin D and proper fuelling is a reasonable strategy.
Can I put collagen in my bidon?
You can, but a 63ml sachet is easier to drink neat before you set off, and the pre-loading window is the point. If you do add it to a bottle, drink that bottle first so the dose lands before the hard efforts.
Do cyclists need creatine as well?
Not all of them. Creatine (3–5g a day, Kreider 2017) supports repeated sprint efforts and strength training, so it makes sense for track, crit and sprint riders and for anyone in a gym block. Pure endurance riders can skip it; the small weight gain from water retention is real, if minor.
Other sports: runners, Hyrox, CrossFit, rugby and football, the gym. Browse the full liquid collagen range.
