Which joint supplements work?
No supplement has strong proof of lasting relief for sore joints. A few eased arthritis pain in short trials. Glucosamine and chondroitin barely did. The first thing NICE suggests for arthritis costs nothing.
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What is the best supplement for joint pain?
None has strong proof. One review pooled 69 trials of 20 supplements in people with arthritis of the hand, hip or knee (osteoarthritis).
Seven, including collagen, turmeric and Boswellia (a tree resin extract), eased pain a lot in the short term. But some big results came from few, small studies, and overall the evidence was very low quality. None helped pain in the long term.
A short trial is a photo, not a film. It shows a few good weeks, not how your knee feels next year.
| Supplement | What trials found | What to know |
|---|---|---|
| Glucosamine | Small or no effect on pain. | NICE: do not offer it for osteoarthritis. |
| Chondroitin | Small or no effect on pain. | GPs no longer prescribe it. |
| Collagen | Eased pain and helped movement a small to moderate amount (moderate to high certainty). | No extra side effects in trials. |
| Turmeric (curcumin) | Eased pain a lot short term. No proof of help long term. | Rare liver harm, says a UK safety committee. |
| Boswellia | Eased pain a lot short term. No proof of help long term. | Supplements are not routinely offered on the NHS. |
| Fish oil (omega-3) | Rheumatoid arthritis: less painkiller use, but swelling not clearly better. | Trials used 2.7 g a day or more. |
| Vitamin D | Knee arthritis with low vitamin D: knee pain no better after 2 years. | NHS: consider 10 micrograms a day in autumn and winter. |
Sources: Liu 2018; Liang 2024; Lee 2012; Jin 2016; NICE NG226; NHS; COT
So what does NICE suggest first? It offers exercise suited to each person to everyone with osteoarthritis, plus weight loss if that applies. That includes strengthening the muscles around the joint and general fitness.
Start there. The six steps further down show how.
Do glucosamine and chondroitin work?
Barely. In the 69-trial review they were either ineffective or had small effects that may not make a real difference to how you feel.
NICE says do not offer glucosamine for osteoarthritis, as there is no strong evidence of benefit. GPs no longer prescribe either one on the NHS for the same reason.
Already buying one? Compare the cost with the result you have noticed. Full detail is in does glucosamine work for joint pain.
Collagen, turmeric or fish oil: is any worth a try?
Collagen eased pain and helped movement by a small to moderate amount in people with osteoarthritis. It didn’t add side effects. See do collagen supplements work.
Turmeric and Boswellia eased pain a lot in short trials, with no proof of help long term. A UK safety committee says turmeric supplements may harm the liver in rare people. More on each: Boswellia for joint pain and turmeric and your liver.
Fish oil was tested in rheumatoid arthritis, where the immune system attacks the joints. At 2.7 g of omega-3 a day or more for at least 3 months, people took fewer anti-inflammatory painkillers. Tender and swollen joints were not clearly better.
The NHS says there is little evidence for supplements in rheumatoid arthritis. See omega-3 supplements.
Taking any medicine? Check with your healthcare team before you try one, as supplements can sometimes interfere with your medicine. Never stop or change a prescribed medicine without your prescriber.
Vitamins for bones and joints: what do you need?
Vitamin D didn’t ease knee pain in a 2-year trial. It gave 413 people with knee osteoarthritis and low vitamin D a monthly high dose or a dummy pill. Knee pain and the cushioning at the ends of the bones (cartilage) changed no differently.
Your bones still need vitamin D and calcium. Check the amount on your tablet against the NHS advice.
| Vitamin or mineral | NHS daily amount | Upper limit |
|---|---|---|
| Vitamin D | 10 micrograms (400 IU) in autumn and winter. Consider it all year if you’re rarely outdoors, cover most of your skin or have dark skin. | Adults and children aged 11 to 17: no more than 100 micrograms (4,000 IU) a day. |
| Calcium | Adults: 700mg a day, which you should be able to get from food. | 1,500mg a day or less is unlikely to cause harm. |
Sources: NHS: vitamin D; NHS: calcium
Too much vitamin D over a long time can weaken the bones and damage the kidneys and heart. More is not better. See vitamin D deficiency and calcium and vitamin D.
Cracking knees? The NHS says painless clicking is normal. Get advice from 111 now if your knee locks, gives way or clicks painfully.
What should I try before a joint supplement?
The NHS calls exercise one of the most important treatments for osteoarthritis, whatever your age or fitness.
Six steps for sore joints to start this week
- Do exercises that strengthen the muscles around the joint, plus general fitness such as walking.
- Rest a sore joint if you can, but don’t completely stop moving it.
- If you’re overweight, lose some. Any amount is likely to help, and 10% of your weight likely helps more than 5%.
- Put an ice pack or bag of frozen peas, wrapped in a towel, on the joint for up to 20 minutes every 2 to 3 hours.
- Ask a pharmacist or GP which painkiller suits you.
- Refer yourself to NHS physiotherapy (MSK services) if your area lets you.
Sources: NICE NG226; NHS: joint pain
Exercise may hurt a bit at first. NICE says regular exercise will still help your joints, even if it causes some pain or discomfort to begin with.
Want to rule out other causes? See blood tests for joint pain.
When to speak to a GP
The NHS says to see a GP if:
- Joint pain stops you doing normal things or affects your sleep.
- The pain or swelling is getting worse or keeps coming back.
- The pain hasn’t improved after 2 weeks of treating it at home.
- Your joints are stiff for more than 30 minutes after waking up.
- Your child has joint problems.
Get an urgent GP appointment or call 111 if the skin around a sore joint is swollen and feels hot. Do the same if you have joint pain and feel generally unwell, have a high temperature or feel hot, cold or shivery.
Go to A&E or call 999 for very bad joint pain after a fall or injury. Do the same if you can’t walk or put weight on a joint, or it has moved out of place. Or if you have tingling or no feeling around it after an injury.