Overview
Glibenclamide, also known as glyburide, is a second-generation sulfonylurea antidiabetic drug first introduced in 1969. As a secretagogue, it primarily acts on pancreatic beta cells to stimulate insulin release, making it effective for managing type 2 diabetes mellitus. The compound belongs to the sulfonylurea class of medications, which were developed as oral alternatives to insulin therapy. In pharmaceutical applications, glibenclamide is typically formulated as tablets in various strengths (1.25mg to 5mg). Its therapeutic effects last approximately 16-24 hours, allowing for once- or twice-daily dosing. The drug is included on the WHO Model List of Essential Medicines, highlighting its importance in global diabetes care.
Physical and Chemical Properties
Glibenclamide presents as a white to off-white crystalline powder with a melting point between 168-173°C. The compound is practically insoluble in water but demonstrates good solubility in organic solvents such as acetone and methanol, which is relevant for pharmaceutical formulation processes. Chemically, it features a sulfonylurea bridge (SO2NHCONH-) connected to a chlorobenzene ring and cyclohexyl group, which are essential for its pharmacological activity. The molecular structure contributes to its high potency, with typical therapeutic doses in the milligram range. Stability studies indicate the compound should be protected from light and moisture during storage to maintain efficacy.
Main Applications
The primary application of glibenclamide is in the management of type 2 diabetes mellitus, particularly in patients who cannot achieve adequate glycemic control through diet and exercise alone. As an insulin secretagogue, it helps lower blood glucose levels by stimulating pancreatic insulin release and may enhance peripheral insulin sensitivity. In clinical practice, glibenclamide is often used as monotherapy or in combination with other antidiabetic agents like metformin. Some research suggests potential neuroprotective effects in stroke, though these applications remain investigational. The drug is available in numerous global markets under various brand names, including Daonil and Micronase.
Safety and Storage
Proper storage of glibenclamide requires protection from light and moisture in tightly sealed containers at controlled room temperature (20-25°C). Bulk pharmaceutical material should be stored in climate-controlled environments to prevent degradation. Significant safety considerations include the risk of hypoglycemia, particularly in elderly patients or those with renal impairment. The drug is contraindicated in type 1 diabetes, diabetic ketoacidosis, and during pregnancy. Healthcare professionals must monitor liver function and be aware of potential drug interactions with substances that affect CYP2C9 metabolism.
B2B Procurement Guide
When procuring glibenclamide in bulk, buyers should prioritize suppliers with proper GMP certification and compliance with relevant pharmacopeial standards (USP, EP, or JP). Key specifications to verify include purity (typically ≥98%), residual solvent levels, and particle size distribution for formulation purposes. Quality documentation should include certificates of analysis, stability data, and regulatory filings. Given the sensitive nature of pharmaceutical ingredients, consider suppliers with robust cold chain logistics for international shipments. Price negotiations often depend on order volume, with contract manufacturing arrangements available for large-scale needs.
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