Classes
DEA Class; Rx
Common Brand Names; Amaryl
- Antidiabetics, Sulfonylureas
Description
Second-generation sulfonylurea; weakly active metabolites
Used primarily in adults for the treatment of type 2 diabetes mellitus, as add-on therapy to metformin or other agents
Glipizide is preferred over glyburide for use in the elderly and in patients with renal dysfunction, but glimepiride can also be an option
Indications
Indicated for the treatment of type 2 diabetes mellitus as an adjunct to diet and exercise.
Contraindications
Hypersensitivity; sulfa allergy
Type 1 diabetes
Diabetic ketoacidosis (with or without coma)
Complicated gestational diabetes mellitus
Adverse Effects
- Hypoglycemia (4-20%)
- Dizziness (1.7%)
- Asthenia (1.6%)
- Headache (1.5%)
- Nausea (1.1%)
- Allergic skin reactions
- Erythema
- Morbilliform or maculopapular eruptions
- Pruritus
- Urticaria
- Diarrhea
- Gastrointestinal pain
- Vomiting
- Agranulocytosis
- Anemia
- Aplastic anemia
- Leukopenia
- Pancytopenia
- Thrombocytopenia, hemolytic
- Cholestasis
- Elevation of liver enzyme levels
- Hepatic porphyria reactions
- Jaundice (rare)
- Disulfiram-like reactions
- Hyponatremia
- Serious hypersensitivity reactions, including anaphylaxis, angioedema, and Stevens- Johnson Syndrome
- Hemolytic anemia in patients with and without G6PD deficiency
- Hepatic impairment (eg, cholestasis, jaundice), as well as hepatitis, which may progress to liver failure
- Porphyria cutanea tarda, photosensitivity reactions and allergic vasculitis
- Leukopenia, agranulocytosis, aplastic anemia, and pancytopenia
- Thrombocytopenia (including severe cases with platelet count <10,000/mcL) and thrombocytopenic purpura
- Hepatic porphyria reactions and disulfiram-like reactions
- Hyponatremia and SIADH, most often in patients on other medications or have medical conditions known to cause hyponatremia or increase release of antidiuretic hormone
- Dysgeusia
- Alopecia
Warnings
Patients with risk of severe hypoglycemia: Elderly, debilitated, or malnourished; adrenal or pituitary insufficiency; patients with stress due to infection, fever, trauma, or surgery
If patient is exposed to stress, it may be necessary to discontinue glimepiride and initiate insulin
Use caution in hepatic/renal impairment
Pregnancy, lactation
Increased risk of cardiovascular mortality
Persons allergic to other sulfonamide derivatives may develop allergic reaction to glimepiride
Hypoglycemia may be difficult to recognize in patients with autonomic neuropathy
Hemolytic anemia may occur with glucose 6-phosphate dehydrogenase (G6PD) deficiency when treated with sulfonylurea agents
Fluid retention, which may exacerbate or lead to heart failure, may occur
Combination use with insulin and use in congestive heart failure NYHA Class I and II may increase risk of other cardiovascular effects
Potential risk of ischemic cardiovascular (CV) events relative to placebo reported in meta-analysis studies, but not confirmed in long-term CV outcome trial versus metformin or sulfonylurea
Dose-related edema, weight gain, and anemia may occur
Macular edema reported
Increased incidence of bone fracture reported
Postmarketing reports for glimepiride include anaphylaxis, angioedema, and Stevens-Johnson syndrome; promptly discontinue glimepiride, assess for other causes, institute appropriate monitoring and treatment, and initiate alternative treatment for diabetes
Pregnancy and Lactation
Available data from a small number of published studies and postmarketing experience in pregnancy over decades have not identified any drug associated risks for major birth defects, miscarriage, or adverse maternal outcomes. However, sulfonylureas (including glimepiride) cross the placenta and have been associated with neonatal adverse reactions such as hypoglycemia; therefore, therapy should be discontinued at least two weeks before expected delivery; poorly controlled diabetes in pregnancy is also associated with risks to mother and fetus
Breastfed infants of lactating women in therapy should be monitored for symptoms of hypoglycemia; not known whether drug is excreted in human milk and there are no data on effects of drug on milk production
Maximum Dosage
8 mg/day PO.
8 mg/day PO.
Safety and efficacy have not been established; data suggest a max dose of 8 mg/day PO.
8 to 12 years: Safety and efficacy have not been established; data suggest a max dose of 8 mg/day PO.
Less than 8 years: Safety and efficacy have not been established.
How supplied
Glimepiride
tablet
- 1mg
- 2mg
- 3mg
- 4mg