Knee Osteoarthritis: What Actually Helps, According to the Guidelines

By ValueReviewHub Editorial · Sources checked September 28, 2026 · How we review

Knee osteoarthritis (OA) is the most common form of arthritis in the knee, and the supplement aisle is full of products promising relief. The treatments with the strongest evidence, though, are mostly not supplements. This guide organizes the options using the 2019 American College of Rheumatology/Arthritis Foundation guideline, so you can see what is strongly recommended, what may help, and where supplements fit.

The short version: exercise, weight loss (if you’re overweight), self-management programs, tai chi, a cane, knee bracing where appropriate, topical and oral NSAIDs, and steroid injections have the strongest recommendations. Glucosamine and chondroitin are strongly recommended against for knee OA.

Strongly recommended (ACR/AF 2019)

Treatment	Notes
Exercise	Includes walking, strengthening, aquatic exercise and supervised programs. The cornerstone of care.
Weight loss	For people with knee and/or hip OA who are overweight or obese
Self-efficacy and self-management programs	Education and skills to manage pain and activity
Tai chi	Combines movement, balance and relaxation
Cane use	Reduces load on the painful knee
Tibiofemoral knee bracing	For appropriate patterns of knee OA, fitted properly
Topical NSAIDs	Strongly recommended for knee OA. Lower body-wide exposure than pills.
Oral NSAIDs	Effective, but consider stomach, kidney and heart risks with a clinician
Intra-articular glucocorticoid (steroid) injections	For knee OA flares, given by a clinician

Conditionally recommended (may help some people)

Balance exercises, yoga, cognitive behavioral therapy, patellofemoral bracing, acupuncture, heat or cold therapy, radiofrequency ablation for knee OA, topical capsaicin for knee OA, acetaminophen, duloxetine and tramadol.

Where supplements fit

Supplement	Status	Our guide
Glucosamine	Strongly recommended against for knee OA (ACR)	Evidence
Chondroitin	Recommended against for knee and hip OA. Conditionally recommended for hand OA.	Evidence
Turmeric/curcumin	Early evidence positive, higher-quality research needed (NCCIH). Liver injury reports.	Evidence
Collagen	Some positive trials, limited evidence base	Evidence
Omega-3 fish oil	Best evidence is as an add-on in rheumatoid arthritis, not OA	Evidence

Building a practical plan

Get a diagnosis. Knee pain has many causes. A clinician can confirm OA and rule out other problems.
Start moving. Ask about physical therapy or a structured exercise program. Strengthening the thigh muscles often helps knee pain.
Address weight if relevant. Even modest weight loss reduces load on the knees.
Use proven pain relief, such as topical NSAIDs, under guidance.
Consider supportive tools such as a cane or bracing.
If you try a supplement, set a time limit, tell your clinician and don’t let it replace the steps above.

When to seek care promptly

See a clinician urgently if a joint becomes hot, red and very swollen, if you have fever with joint pain, can’t bear weight after an injury, or notice sudden severe pain.

FAQ

Is walking good for knee osteoarthritis?

Yes. Exercise, including walking, is strongly recommended. Start at a comfortable level and build gradually.

What is the best supplement for knee osteoarthritis?

None has evidence comparable to exercise or standard treatments. Collagen and curcumin have some positive trials, while glucosamine and chondroitin are recommended against for knee OA by the ACR.

Sources

Medical note: This article is general education, not medical advice. Talk to your doctor or pharmacist before starting a supplement, especially if you take medication, are pregnant or breastfeeding, or have a health condition. Read our medical disclaimer.