MSM

MSM is an organosulfur compound naturally found in foods, often marketed for joint health. C-grade evidence for osteoarthritis symptoms (small effect). Also studied for allergies and exercise recovery. Provides sulfur which is important for connective tissue. Often combined with glucosamine/chondroitin. Related to DMSO but is NOT the same compound. Generally well-tolerated with good safety profile. Evidence is weaker than glucosamine/chondroitin.

Quick Answer

What it is

MSM is an organosulfur compound naturally found in foods, often marketed for joint health. C-grade evidence for osteoarthritis symptoms (small effect).

Key findings

  • Grade C: Osteoarthritis Symptoms (Osteoarthritis (OA))
  • Grade C: Exercise-Induced Oxidation (Muscle Recovery)
  • Grade C: Allergy Symptoms (Allergic Rhinitis (Seasonal Allergies / Hay Fever))

Safety

No specific caution or interaction language was detected in the current summary/outcome notes.

ℹ️ Quick Facts: MSM

Quick Facts: MSM

  • Best Evidence:Grade C
  • Conditions Studied:6
  • Research Outcomes:15
  • Key Effect:Muscle Recovery
Outcomes by grade:
A0
B0
C5
D1
6 conditions Β· 15 outcomes

Detailed Outcomes

Grade:
Effect:
Size:
Sort:
|
C
Osteoarthritis Symptoms
Small Improvement
small↓Improves
?
Pain
1 study
↓Improves
C
Exercise-Induced Oxidation
Moderate Decrease
moderate↓Improves
D
Fatigue Symptoms
No effect
1 study
none
?
Oxidative Stress Biomarkers
3 studies
↓Improves
?
Muscle Damage
↑Worsens
?
Muscle Soreness
1 study
↓Improves
?
Training Volume
1 study
↑Improves
C
Allergy Symptoms
Small Improvement
1 study
small↓Improves
?
Nasal Congestion
↑Improves
C
Muscle Damage
Small Decrease
small↓Improves
?
Oxidative Stress Biomarkers
1 study
↓Improves
C
Muscle Damage
Small Decrease
small↓Improves
?
Oxidative Stress Biomarkers
1 study
↓Improves
?
Leg Edema
↑Worsens

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