Glucosamine Sulfate Potassium Chloride is a crystalline salt of glucosamine, a natural amino-monosaccharide found in human connective tissues and cartilage. It is a specific, slow-acting, symptomatic slow-acting drug for osteoarthritis (SYSADOA). In the Indian context, it is widely used as a prescription and over-the-counter nutraceutical for managing symptoms of mild to moderate osteoarthritis, particularly of the knee. It is believed to provide substrate for the synthesis of glycosaminoglycans and hyaluronic acid in synovial fluid and cartilage matrix.
Adult: 750 mg once or twice daily. Common regimen: One 750mg capsule/tablet twice daily with meals.
Note: Administer with or immediately after meals to improve gastrointestinal tolerance. Swallow the tablet/capsule whole with a full glass of water. Do not crush or chew. Consistent daily intake is important for sustained effect.
Glucosamine is a natural precursor for the biosynthesis of glycosaminoglycans (GAGs), proteoglycans, and hyaluronic acid, which are essential structural components of joint cartilage and synovial fluid. It is believed to stimulate the synthesis of these macromolecules by chondrocytes, inhibit degradative enzymes (like collagenase and phospholipase A2), and reduce the production of inflammatory mediators (e.g., prostaglandin E2, nitric oxide) induced by interleukin-1.
Pregnancy: Category C: Animal reproduction studies have shown adverse effects. There are no adequate and well-controlled studies in pregnant women. Use only if potential benefit justifies potential risk to the fetus. Not recommended.
Driving: May cause drowsiness or dizziness in some patients. Caution advised when driving or operating machinery until response is known.
| Warfarin/Acenocoumarol | Potential increased INR and risk of bleeding; mechanism unclear (possibly protein binding displacement). | Major |
| Antidiabetic Drugs (Insulin, Metformin, Sulfonylureas) | Theoretical interference with insulin sensitivity; may alter blood glucose control. Monitor blood glucose closely. | Moderate |
| Tetracycline antibiotics (Doxycycline, Minocycline) | May reduce absorption of tetracyclines. Administer glucosamine at least 2 hours apart. | Moderate |
| ACE Inhibitors (Ramipril), ARBs (Losartan), Potassium-Sparing Diuretics (Spironolactone) | Additive risk of hyperkalemia due to potassium chloride content. | Major |
| NSAIDs (Ibuprofen, Diclofenac) | No direct pharmacokinetic interaction. Often used concomitantly for osteoarthritis. Glucosamine may have a steroid-sparing effect. | Minor |
Same composition (Glucosamine Sulfate Potassium Chloride (750mg)), different brands: