Hypoglycemia.
Avoid concurrent use; substitute with paracetamol if analgesic needed
Source: KDT 7e · p949
Sulfonylurea · Antidiabetic
Also known as Diamicron, Glycinorm, Glicla, Diabend, Reclide

KDIGO 2024 + manufacturer label
289 branded formulations and 29 fixed-dose combinations. Look up specific brands in the Drugs workspace.
Gliclazide primarily lowers blood glucose by stimulating insulin release from pancreatic beta cells. It binds to sulfonylurea receptors on the beta-cell membrane, leading to the closure of ATP-sensitive potassium channels. This causes depolarization of the beta-cell membrane, opening voltage-gated calcium channels, and subsequent influx of calcium, which triggers insulin exocytosis. It may also have some extrapancreatic effects, including improved peripheral insulin sensitivity and reduction of hepatic glucose production.
Category C — insulin preferred in pregnancy
Secreted in milk; should not be given to nursing mothers
Hypoglycemia.
Avoid concurrent use; substitute with paracetamol if analgesic needed
Source: KDT 7e · p949
Hypoglycemia
Avoid concurrent use or adjust dose
Source: KDT 7e · p948
Loss of glycemic control; hyperglycemia.
Increase sulfonylurea dose or switch to non-interacting agent
Source: KDT 7e · p949
Hypoglycemia.
Avoid concurrent use; substitute with paracetamol if analgesic needed
Source: KDT 7e · p949
Hypoglycemia
Monitor blood glucose; reduce sulfonylurea dose
Source: KDT 7e · p949
Hypoglycemia.
Avoid concurrent use or adjust dose
Source: KDT 7e · p948
Hypoglycemia
Avoid concurrent use; if needed, monitor blood glucose closely
Source: KDT 7e · p948
Hypoglycemia
Avoid concurrent use or adjust dose
Source: KDT 7e · p948
Hypoglycemia.
Avoid concurrent use; substitute with paracetamol if analgesic needed
Source: KDT 7e · p949
Hypoglycemia
Avoid concurrent use or adjust dose
Source: KDT 7e · p948
Hypoglycemia.
Avoid concurrent use or adjust dose
Source: KDT 7e · p948
Hypoglycemia.
Avoid concurrent use; substitute with paracetamol if analgesic needed
Source: KDT 7e · p949
Continue into a citation-backed clinical answer with the drug context already attached.
Sources: KD Tripathi 7e, Katzung, BNF·Verified: 2026-05-16 · House clinical team·Cockpit curated: 2026-05-16