That nagging groin pull that keeps coming back - groin strains are notoriously slow to heal and easy to re-injure. Here's what is actually injured, what the evidence supports, and an honest answer to whether collagen has anything to do with it.
Groin strains are one of the most frustrating injuries for active men - affecting footballers, rugby players, martial artists, sprinters and gym-goers alike. They're slow to heal, quick to recur, and most men return to sport too soon and re-injure the same area repeatedly. Here's the honest picture on what's actually injured - and why collagen is not the answer to it.
What Is a Groin Strain - and What's Actually Injured?
The term groin strain covers a spectrum of injuries to the adductor muscle-tendon units - the muscles on the inner thigh that pull the legs together and stabilise the hip during explosive movements. The most commonly involved structures are the adductor longus muscle and its tendon attachment at the pubic bone - though other adductor muscles and their tendons can be involved depending on the mechanism of injury.
Groin strains range from mild muscle fibre disruption at Grade 1 through to partial and complete tears at Grade 3. The vast majority of groin strains in sport are Grade 1–2, and the tissue that tears is muscle - not tendon, ligament or cartilage. That distinction matters, because muscle is not a collagen structure. Muscle is built from contractile proteins, and muscle repair depends on rest, graded loading and adequate total daily protein - not on any particular type of protein powder.
Does Collagen Have Anything to Do With a Groin Strain?
The short answer is: less than the internet suggests. Collagen is a structural protein that forms part of tendon, ligament and cartilage - but a typical groin strain is a muscle injury, and muscle is not made of collagen. Selling collagen as a groin strain remedy means quietly swapping one tissue for another, and we are not going to do that.
Hydrolysed collagen peptides are a dietary protein source unusually rich in glycine, proline and hydroxyproline - the amino acids that are most abundant in the body's own collagen, and that are present in far lower proportions in muscle-meat and dairy protein. That is a statement about what is in the tub. It is not a statement about what happens to a torn adductor.
Research has investigated whether collagen taken before exercise affects markers of collagen turnover. Published findings should be interpreted in the context of each study's ingredient, dose, design, duration, participant group and outcomes measured, they measured laboratory markers rather than healing or return-to-play, and they were run in healthy tendon - not in injured muscle. None of that adds up to a reason to take collagen for a groin strain. Studies in this area typically use 5–15g daily, measured at 8–24 weeks.
Revayo Prime provides 14.77g of FORTIGEL® Type I hydrolysed collagen peptides per serving alongside 189.9mg Vitamin C - which contributes to normal collagen formation for the normal function of cartilage, bones, skin, blood vessels, gums and teeth. This authorised claim relates to the Vitamin C in Revayo Prime.
What Actually Helps a Groin Strain
- Physiotherapy assessment: groin strains vary significantly in severity and structure involved - a physiotherapy assessment establishes the grade of injury and guides an appropriate rehabilitation programme
- Progressive loading rehabilitation: graded eccentric and isometric adductor work - the Copenhagen adduction exercise and its progressions - is the intervention with the strongest evidence behind it, and it is the part that actually does the work
- Don't return to sport on pain alone: pain resolution significantly precedes structural tissue quality - functional strength testing and physiotherapy clearance are more reliable return-to-sport criteria than pain
- Adductor strengthening ongoing: keeping adductor strength work in the programme after you return to sport is the standard recommendation from sports physiotherapy, and it costs nothing
- Enough total daily protein: muscle repair runs on total protein intake across the day, not on one specific powder - and Vitamin C contributes to normal collagen formation for the normal function of cartilage, bones, skin, blood vessels, gums and teeth
For more on collagen and soft tissue recovery, see collagen for men returning to sport after injury and collagen after ACL recovery.
How Men Typically Take Collagen
Research context
Research relevant to groin-strain recovery uses specific collagen peptide ingredients, doses, study designs and participant groups. Findings should be interpreted within those study conditions rather than treated as proof of a guaranteed result for every reader.
Published findings relate to the ingredient and outcomes studied. Revayo Prime is a food supplement and is not a substitute for professional advice, rehabilitation or medical care.
Vitamin C contributes to normal collagen formation for the normal function of cartilage, bones, skin, blood vessels, gums and teeth. This authorised claim relates to the Vitamin C in Revayo Prime.
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Revayo Prime - 14.77g FORTIGEL® hydrolysed collagen peptides + 189.9mg Vitamin C per serving. Made in the UK, no fillers and no proprietary blends. 450g pouch, 30 servings - £39.99, £1.33 a day.
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Further reading: Collagen for men returning to sport after injury - Collagen after ACL recovery
Note: This article is for general information only and does not replace medical advice. Revayo Prime is a food supplement and is not intended to diagnose, treat, cure or prevent any disease. If you have persistent or severe pain, consult a qualified healthcare professional before starting any supplement programme.