Does collagen help Arthritis?
Scarlett Gray
BNutrDiet (Hons), APD, SDA
Reviewed by Scarlett Gray · About Scarlett
Accredited Practising Dietitian with Dietitians Australia (APD200526). Accredited Sports Dietitian and Credentialled Eating Disorder Clinician. First Class Honours in Nutrition and Dietetics from the University of Newcastle.
Scarlett Gray
BNutrDiet (Hons), APD, SDA
Accredited Practising Dietitian with Dietitians Australia (APD200526). Accredited Sports Dietitian and Credentialled Eating Disorder Clinician. First Class Honours in Nutrition and Dietetics from the University of Newcastle.
Does collagen help arthritis? What the evidence says
Arthritis is a common condition — and one that many people look to nutrition and supplements to help manage alongside conventional care. Marine collagen often comes up in that conversation, particularly around osteoarthritis (OA) and general joint pain. Here's an honest look at what the current evidence says about collagen and arthritis, where the research is strongest, and how to think about it as part of a broader joint care approach.
What is arthritis?
Arthritis is an umbrella term for a group of conditions that cause pain and inflammation in the joints. It affects more than 10 million people in the UK, across all age groups.
The two most common types are osteoarthritis (OA) — which involves gradual wear and structural changes in the cartilage cushioning the joints — and rheumatoid arthritis (RA), an autoimmune condition where the immune system attacks joint tissues. There are many other, less common types too. The published research on collagen supplementation is most developed for osteoarthritis and general joint pain, which is where this article focuses.
Understanding collagen's role in joints
Collagen makes up the structural framework of many tissues in the body — including the cartilage, tendons and ligaments in your joints. There are several types of collagen with different roles:
- Type I is the dominant collagen in skin, tendon and bone. Most marine collagen supplements — including Kollo — are predominantly Type I.
- Type II is the dominant collagen in cartilage.
You may see some products marketed specifically as "Type II collagen" for joint support. It's worth understanding the distinction: those are usually undenatured Type II collagen (a different category of ingredient designed to interact with the immune system in a specific way). The much larger body of clinical research on hydrolysed collagen peptides — the digestible form used in most marine collagen supplements — has been done predominantly with Type I collagen. After digestion, hydrolysed collagen is broken down into amino acids and small peptides that the body then uses to support its own collagen production across all types.
What does the research say?
Joint pain and function
A 2021 review by Iwai et al. published in Amino Acids collated five studies on collagen peptide supplementation and joint outcomes. All five reported beneficial effects of collagen peptides in reducing joint pain and improving joint function. The review's conclusion: "collagen has the potential to reduce joint pain and improve joint functionality, especially when complemented with a rehabilitative exercise protocol." The daily doses used across the studies fell within the 5-15g range, and the review also noted that collagen supplementation increased pain-free time to exertion.
Osteoarthritis specifically
A 6-month randomised placebo-controlled trial in people with knee osteoarthritis found that 10g of collagen peptides per day was associated with lower VAS pain scores (a common self-reported pain measure), better Lequesne index scores (a joint severity measure widely used in OA research), and lower CRP and ESR (blood markers of inflammation) compared to placebo. This is one of the more specific pieces of evidence in the arthritis space and is encouraging for OA in particular.
Being honest about the wider picture: this is still a relatively small body of research. The evidence base is expanding, but the current position is that collagen may support joint comfort and function in OA when taken consistently at a clinically relevant dose. It is not a treatment or a substitute for the care recommended by a GP or rheumatologist.
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Collagen supplementation isn't a treatment for arthritis, and it doesn't repair damaged cartilage on demand. What it does is provide the amino acids — particularly glycine, proline and hydroxyproline — that the body uses in its own collagen production. Over months of consistent daily use, this may support the collagen matrix in cartilage, tendons and ligaments, and the research suggests that translates to reduced joint pain and improved joint function for many people.
One of the most important points from the Iwai 2021 review is that collagen supplementation appears to work best when paired with movement — a rehabilitative exercise protocol amplified the joint benefits seen in the studies. This aligns with what physiotherapists and rheumatologists typically recommend for OA management: strengthening exercises and consistent movement are foundational, and collagen is a supporting act rather than a stand-alone solution.
Rheumatoid arthritis and other types
The evidence base for collagen supplementation in rheumatoid arthritis and other forms of arthritis is currently more limited and less consistent than the evidence for osteoarthritis. Some early-stage research is underway, but there isn't yet a strong basis to recommend collagen specifically for RA. If you have rheumatoid arthritis or another form of arthritis, speak with your rheumatologist about whether a collagen supplement makes sense alongside your existing treatment plan.
Practical considerations
- Dose — the joint research uses 5-15g of collagen peptides per day. Kollo Premium Liquid Marine Collagen delivers 10,000mg (10g) per daily sachet, sitting comfortably in the studied range
- Consistency — joint benefits build over 12+ weeks of daily use. Skipping days undermines the pattern
- Movement matters — the strongest joint benefits in the research are seen when collagen is paired with rehabilitative exercise, not taken in isolation
- Fish allergy — marine collagen is not suitable for anyone with a fish allergy
- Alongside your care team — collagen is a support to a broader joint care plan, not a substitute for the treatment your GP or rheumatologist has recommended
Kollo for joint support
Kollo Premium Liquid Marine Collagen delivers 10,000mg of Naticol® marine collagen peptides per daily sachet, alongside vitamin C, a B vitamin complex and l-lysine. The dose sits in the middle of the 5-15g range used in the joint pain research. Every batch is independently tested to Informed Choice standards.
For people specifically managing joint pain, Kollo Flex+ is Kollo's targeted joint care supplement, designed to complement daily marine collagen.
Frequently Asked Questions
Does collagen help arthritis?
The evidence is strongest for osteoarthritis (OA), where clinical trials have shown reductions in joint pain and improvements in joint function with daily collagen peptide supplementation over 12+ weeks. Evidence for rheumatoid arthritis and other forms is currently more limited. Collagen is a support to a broader care plan, not a treatment for arthritis.
Which type of collagen is best for arthritis?
Most of the clinical research on joint pain and function uses hydrolysed Type I collagen peptides — the digestible form found in most marine collagen supplements. Undenatured Type II collagen is a separate category of ingredient with its own smaller research base. For general joint support, hydrolysed marine collagen at a clinically relevant dose is a strong option.
How much collagen should I take for joint pain?
The published research on joint pain has used daily doses in the 5-15g range. Kollo Premium Liquid Marine Collagen delivers 10,000mg (10g) per daily sachet, which sits comfortably in that range.
How long before I see results?
Joint outcomes take longer to build than skin outcomes. The clinical research shows meaningful improvements after 12+ weeks of consistent daily use, with the largest effects seen at 6 months in some trials. Pairing collagen with a rehabilitative exercise protocol appears to amplify the benefit.
Can I take collagen alongside my arthritis medication?
Collagen is a food-derived protein and there are no known interactions with common arthritis medications, but you should always check with your GP or rheumatologist before starting any new supplement — especially if you are on regular prescription medication.
For the complete picture on liquid marine collagen — dose, sources, research and how to choose the right supplement — read our complete guide to liquid marine collagen.
Kollo Health was co-founded by Jenni Falconer — TV presenter, Smooth Radio breakfast host, ten-time London Marathon runner and host of the RunPod podcast. Read her story and why she created Kollo.
