A fixed-dose combination (FDC) of three agents with complementary mechanisms for the symptomatic management of mild to moderate osteoarthritis (OA). Glucosamine is a natural amino sugar and precursor for glycosaminoglycan synthesis, providing substrate for cartilage matrix. Diacerein is an anthraquinone derivative with interleukin-1 (IL-1) inhibiting properties, providing disease-modifying potential. Methyl Sulfonyl Methane (MSM) is an organic sulfur compound with purported anti-inflammatory and analgesic effects. This combination is widely used in India as a 'SYSADOA' (Symptomatic Slow-Acting Drug for Osteoarthritis).
Adult: One tablet/capsule twice daily, after meals. Typically prescribed as 1 tablet in the morning and 1 in the evening.
Note: Administer with or immediately after food to improve gastrointestinal tolerance, especially for diacerein. Swallow whole with a full glass of water. Do not crush or chew. Consistent daily intake is crucial for efficacy.
The combination works via multi-targeted mechanisms to reduce symptoms, decrease inflammation, and potentially slow cartilage degradation in osteoarthritis. Glucosamine provides substrate for the biosynthesis of glycosaminoglycans and hyaluronic acid, supporting cartilage matrix integrity and stimulating chondrocyte activity. Diacerein (via its active metabolite rhein) inhibits the synthesis and activity of pro-inflammatory cytokines, particularly interleukin-1 beta (IL-1ÎČ), which plays a key role in cartilage breakdown, synovitis, and pain in OA. It also inhibits matrix metalloproteinases (MMPs). MSM provides a bioavailable source of sulfur, which is a component of connective tissue like cartilage, tendons, and ligaments. It may exert anti-inflammatory effects by inhibiting NF-ÎșB signaling and reducing oxidative stress.
Pregnancy: Category C (US FDA). Safety not established. Animal studies with diacerein show embryotoxicity and teratogenicity. Contraindicated during pregnancy. Women of childbearing potential should use effective contraception.
Driving: Generally no effect. However, if dizziness or visual disturbances occur as rare side effects, patients should avoid driving or operating machinery.
| Warfarin / Acenocoumarol | Glucosamine may potentiate anticoagulant effect, increasing INR and bleeding risk. Mechanism unclear. | Major |
| Antidiabetic Drugs (e.g., Metformin, Glimepiride) | Theoretical interaction; glucosamine may impair insulin sensitivity. Monitor blood glucose levels. | Moderate |
| Cyclosporine | Diacerein may increase cyclosporine levels, increasing nephrotoxicity risk. Monitor cyclosporine levels and renal function. | Major |
| Other Laxatives or Drugs causing Diarrhea | Additive risk of severe diarrhea with diacerein. | Moderate |
| Tetracycline antibiotics | Theoretical reduced absorption of tetracycline due to calcium in some glucosamine salts. Separate administration by 2-3 hours. | Minor |
Same composition (Glucosamine (750mg) + Diacerein (50mg) + Methyl Sulfonyl Methane (250mg)), different brands: