Supplements for Bone Spurs
Most supplements commonly marketed for bone spurs and osteoarthritis are not recommended based on high-quality evidence, and patients should avoid wasting money on glucosamine, chondroitin, vitamin D, and fish oil. 1, 2
Strongly Recommended Against
The American College of Rheumatology provides clear guidance against several popular supplements:
Glucosamine
- Strongly recommended against for knee, hip, and hand osteoarthritis 1, 2
- Multiple high-quality trials show no benefit over placebo when industry bias is removed 1
- Despite being one of the most commonly used dietary supplements in the US, the weight of evidence indicates lack of efficacy and large placebo effects 1
- May cause elevations in serum glucose levels in some patients 1
Chondroitin Sulfate
- Strongly recommended against for knee and hip osteoarthritis 1, 2, 3
- Data with the lowest risk of bias fail to show any important benefits over placebo 1, 3
- Industry-sponsored studies showed discrepancies compared to publicly funded studies, raising serious concerns about publication bias 1, 3
- Exception: Conditionally recommended for hand osteoarthritis only, based on a single trial 1, 3
- Combination products with glucosamine are also strongly recommended against 1, 3
Vitamin D
- Conditionally recommended against for all osteoarthritis sites 1, 2
- Multiple trials demonstrated small effect sizes or no benefit 1
- Pooling data across studies yielded null results 1
Fish Oil
- Conditionally recommended against for knee, hip, and hand osteoarthritis 1, 2
- Only one published trial exists, which failed to show efficacy of higher doses over lower doses 1
Bisphosphonates
- Strongly recommended against for all osteoarthritis sites 1, 2
- Preponderance of data shows no improvement in pain or functional outcomes 1
What Actually Works
Instead of supplements, focus on evidence-based treatments:
Non-Pharmacologic (First-Line)
- Land-based aerobic and/or resistance exercise programs (strongly recommended) 1, 4, 2, 5
- Aquatic exercise for patients with difficulty weight-bearing 1, 4
- Weight loss for overweight/obese patients (strongly recommended) 1, 4, 2, 5
- Self-management programs and patient education 4, 2
Pharmacologic (First-Line)
- Topical NSAIDs (strongly recommended for knee OA, preferred for patients ≥75 years) 1, 4, 2
- Oral NSAIDs (strongly recommended for hand, knee, and hip OA) 1, 4, 2, 5
- Intra-articular corticosteroid injections (strongly recommended for knee and hip OA, provide short-term pain relief) 1, 2, 5
Second-Line Options
- Acetaminophen up to 4,000 mg/day (conditionally recommended) 4, 2, 5
- Duloxetine for inadequate response to initial treatments 2, 5
- Tramadol (conditionally recommended) 1, 4
Critical Caveats
- Avoid opioids: Non-tramadol opioids are conditionally recommended against due to very modest benefits, high risk of toxicity, and dependence 1
- Calcium and vitamin D: While not effective for osteoarthritis symptoms, adequate dietary intake (1,000-1,200 mg calcium daily and 800-1,000 IU vitamin D daily) is recommended for general bone health in patients at risk for osteoporosis 6, 7
- Patient expectations: Many patients perceive glucosamine and chondroitin as efficacious despite evidence to the contrary; clinicians should educate patients that the highest quality evidence shows no benefit over placebo 1, 3
- Low toxicity doesn't mean effective: While most of these supplements have low potential for harm, lack of effectiveness is the primary reason for recommending against them 1, 3