A fixed-dose combination of a natural amino monosaccharide (Glucosamine) and an organosulfur compound (MSM), used as a Symptomatic Slow-Acting Drug for Osteoarthritis (SYSADOA). It is a widely used nutraceutical/dietary supplement in India for the management of mild to moderate osteoarthritis, primarily of the knee and hip. It is believed to provide substrate for the synthesis of glycosaminoglycans and proteoglycans in articular cartilage, while MSM may provide sulfur for connective tissue and possess anti-inflammatory properties.
Adult: One tablet/capsule (Glucosamine 750mg + MSM 250mg) twice daily, or as directed by the physician. Often taken with meals.
Note: Administer orally, preferably with or after meals to minimize gastrointestinal upset. Swallow whole with a full glass of water. Do not crush or chew unless specified by the formulation. Consistent daily intake is necessary for several weeks to assess efficacy.
The combination is proposed to work synergistically. Glucosamine is a precursor for glycosaminoglycans (GAGs) and hyaluronic acid, essential components of joint cartilage and synovial fluid. It may stimulate chondrocyte production of proteoglycans and inhibit degradative enzymes like collagenase and phospholipase A2. MSM provides a bioavailable source of sulfur, which is a critical component of connective tissue proteins like collagen, keratin, and chondroitin sulfate. MSM may also have anti-inflammatory effects by inhibiting NF-ÎșB signaling and reducing pro-inflammatory cytokines.
Pregnancy: Category N (Not classified). Insufficient human data. Animal studies are not conclusive. Use is not recommended during pregnancy unless clearly needed. Glucosamine is an amino sugar involved in biochemical pathways; risk to the fetus is unknown.
Driving: May cause drowsiness, dizziness, or fatigue in some individuals. Patients should be cautioned about operating machinery or driving until they know how the medication affects them.
| Warfarin/Acenocoumarol | MSM may potentiate anticoagulant effect, increasing risk of bleeding. Glucosamine may also interact. | Major |
| Antidiabetic Drugs (e.g., Metformin, Glimepiride) | Glucosamine may reduce insulin sensitivity and increase blood glucose levels, potentially reducing efficacy of antidiabetic drugs. | Moderate |
| Chemotherapy (e.g., Doxorubicin, Etoposide) | Theoretical interaction; MSM may potentially interfere with the efficacy of certain P-glycoprotein substrate drugs. | Moderate |
| Acetaminophen (Paracetamol) | MSM may increase the metabolism of acetaminophen, potentially reducing its efficacy. | Minor |
Same composition (Glucosamine (750mg) + Methyl Sulfonyl Methane (250mg)), different brands: