Glimepiride

Glimepiride is an antidiabetic medication within the sulfonylurea class, primarily prescribed for the management of type 2 diabetes. It is regarded as a second-line option compared to metformin, due to metformin's well-established safety and efficacy. Use of glimepiride is recommended in conjunction with lifestyle modifications such as diet and exercise. It is taken by mouth, reaching a peak effect within three hours and lasting for about a day.

Glimepiride
Clinical data
Trade namesAmaryl, others
AHFS/Drugs.comMonograph
MedlinePlusa696016
License data
Pregnancy
category
  • AU: C
Routes of
administration
By mouth
ATC code
Legal status
Legal status
  • AU: S4 (Prescription only)
  • US: ℞-only
  • In general: ℞ (Prescription only)
Pharmacokinetic data
Bioavailability100%
Protein binding>99.5%
MetabolismComplete Liver (1st stage through CYP2C9)
Onset of action2–3 hours
Elimination half-life5–8 hours
Duration of action24 hours
ExcretionUrine (~60%), feces (~40%)
Identifiers
  • 3-Ethyl-4-methyl-N-[2-(4-{[(trans-4-methylcyclohexyl)carbamoyl]sulfamoyl}phenyl)ethyl]-2-oxo-2,5-dihydro-1H-pyrrole-1-carboxamide
CAS Number
PubChem CID
IUPHAR/BPS
DrugBank
ChemSpider
UNII
KEGG
ChEBI
ChEMBL
CompTox Dashboard (EPA)
ECHA InfoCard100.170.771
Chemical and physical data
FormulaC24H34N4O5S
Molar mass490.62 g·mol−1
3D model (JSmol)
Melting point207 °C (405 °F)
SMILES
  • O=C3C(/CC)=C(/C)CN3C(=O)NCCc1ccc(cc1)S(=O)(=O)NC(=O)N[C@H]2CC[C@H](C)CC2
  • InChI=1S/C24H34N4O5S/c1-4-21-17(3)15-28(22(21)29)24(31)25-14-13-18-7-11-20(12-8-18)34(32,33)27-23(30)26-19-9-5-16(2)6-10-19/h7-8,11-12,16,19H,4-6,9-10,13-15H2,1-3H3,(H,25,31)(H2,26,27,30)/t16-,19- Y
  • Key:WIGIZIANZCJQQY-RUCARUNLSA-N Y
 NY (what is this?)  (verify)

Common side effects include headache, nausea, and dizziness. Serious side effects may include low blood sugar. Use during pregnancy and breastfeeding is not recommended. It works predominantly by increasing the amount of insulin released from the pancreas. It is classified as a second-generation sulfonylurea.

Glimepiride was patented in 1979 and approved for medical use in 1995. It is available as a generic medication. In 2021, it was the 74th most commonly prescribed medication in the United States, with more than 8 million prescriptions.

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