Glyburide contains glibenclamide as its active component. It belongs to the sulfonylurea class of oral antidiabetic agents and is used to help control blood glucose in adults with type 2 diabetes mellitus. The medication is supplied as a pill in strengths of 2.5 mg and 5 mg. In Hong Kong, Glyburide is a prescription-only drug regulated by the Pharmacy and Poisons Board of the Department of Health.
Glyburide stimulates insulin release from the pancreatic β-cells. It binds to sulfonylurea receptors on these cells, causing potassium channels to close. This depolarizes the cell membrane, opens calcium channels, and triggers insulin secretion. The increased insulin lowers blood glucose by promoting glucose uptake into muscle and fat and suppressing hepatic glucose production. Onset of action occurs within 30-60 minutes, with peak effect around 4-6 hours and a duration of effect up to 24 hours.
Glyburide is approved by health authorities, including the Hong Kong Department of Health, for the management of type 2 diabetes mellitus when diet, exercise, and other oral agents are insufficient. It is intended for adult patients whose pancreatic β-cell function remains adequate to respond to a secretagogue. Glyburide is not approved for type 1 diabetes, gestational diabetes, or pediatric diabetes.
Who Should Use Glyburide?
Absolute Contraindications
Relative Contraindications
Special Populations
If you fall into any of the above categories, discuss alternatives with your healthcare provider.
Patients should inform their prescriber of all medicines, supplements, and herbal products they are taking.
This article provides educational information about Glyburide and is not a substitute for professional medical advice. Treatment decisions, including use for unapproved indications, must be made under the guidance of a qualified healthcare provider. The content is intended for informational purposes and does not constitute medical recommendations. Always consult a physician before starting, stopping, or changing any medication regimen.
Mild to moderate renal impairment may require a lower starting dose of Glyburide, and your doctor will monitor kidney function regularly. Severe renal dysfunction is a contraindication because the risk of hypoglycaemia increases substantially.
Both belong to the same drug class and stimulate insulin release, but Glyburide generally has a longer duration of action, which may increase the risk of nocturnal hypoglycaemia compared with shorter-acting agents such as Glipizide.
Glyburide is not known to have a direct impact on lipid metabolism. However, improved glycaemic control can indirectly influence overall cardiovascular risk profiles.
Weight gain is a common side effect of sulfonylureas because they increase insulin levels, which can promote fat storage. Lifestyle interventions can help mitigate this effect.
Yes, you may bring a supply for personal use, but keep it in the original labelled container, carry a copy of the prescription, and be aware of the destination country’s import regulations for prescription medicines.
If you or someone else is unconscious or unable to swallow, call emergency services immediately. If the person is conscious, administer fast-acting glucose (e.g., glucose tablets or juice) and follow up with a healthcare professional.
No specific foods must be avoided, but consuming alcohol excessively can amplify hypoglycaemia risk. Maintaining regular meals and consistent carbohydrate intake helps stabilize blood glucose.
Glyburide begins to lower blood glucose within one hour, with its peak effect occurring around 4-6 hours after ingestion.
Combining Glyburide with insulin may increase the likelihood of hypoglycaemia and is generally avoided unless specifically directed by a specialist familiar with your regimen.
The expiration date is printed on the packaging and usually ranges from 2 to 3 years from the date of manufacture. Do not use tablets past this date.
