GLIMEPIRIDE — glimepiride tablet
Micro Labs Limited
Glimepiride tablets are indicated as an adjunct to diet and exercise to improve glycemic control in adults with type 2 diabetes mellitus [see Clinical Studies (14.1) ].
Limitations of Use
Glimepiride tablets should not be used for the treatment of type 1 diabetes mellitus or diabetic ketoacidosis, as it would not be effective in these settings.
Glimepiride tablets should be administered with breakfast or the first main meal of the day.
The recommended starting dose of glimepiride tablets is 1 mg or 2 mg once daily. Patients at increased risk for hypoglycemia (e.g., the elderly or patients with renal impairment) should be started on 1 mg once daily [see Warnings and Precautions (5.1) and Use in Specific Populations (8.5, 8.6)] .
After reaching a daily dose of 2 mg, further dose increases can be made in increments of 1 mg or 2 mg based upon the patient’s glycemic response. Uptitration should not occur more frequently than every 1 to 2 weeks. A conservative titration scheme is recommended for patients at increased risk for hypoglycemia [see Warnings and Precautions (5.1) and Use in Specific Populations (8.5,8.6)].
The maximum recommended dose is 8 mg once daily.
Patients being transferred to glimepiride tablets from longer half-life sulfonylureas (e.g., chlorpropamide) may have overlapping drug effect for 1 to 2 weeks and should be appropriately monitored for hypoglycemia.
When colesevelam is coadministered with glimepiride, maximum plasma concentration and total exposure to glimepiride is reduced. Therefore, glimepiride tablets should be administered at least 4 hours prior to colesevelam.
Glimepiride is formulated as tablets of:
- 1 mg (Light pink colored, flat capsule shaped uncoated tablets having breakline on both faces and GM and 1 on engraved on either side of breakline on one face.)
- 2 mg (Light green colored, flat capsule shaped uncoated matt finished tablets having break line on both faces and GM and 2 engraved on either side of breakline on one face.)
- 3 mg (Pale yellow colored, flat capsule shaped uncoated tablets having breakline on both faces and GM and 3 engraved on either side of breakline on one face.)
- 4 mg (Light blue colored, flat capsule shaped uncoated matt finished tablets having break line on both faces and GM and 4 engraved on either side of breakline on one face.)
- 6 mg (Brick red colored, flat capsule shaped uncoated tablets having breakline on both faces and GM and 6 engraved on either side of breakline on one face.)
- 8 mg (White to off white, flat capsule shaped uncoated tablets having breakline on both faces and GM and 8 engraved on either side of breakline on one face.)
Glimepiride tablet are contraindicated in patients with a history of a hypersensitivity reaction to:
- Glimepiride or any of the product’s ingredients [see Warnings and Precautions (5.2)].
- Sulfonamide derivatives: Patients who have developed an allergic reaction to sulfonamide derivatives may develop an allergic reaction to glimepiride tablets. Do not use glimepiride tablets in patients who have a history of an allergic reaction to sulfonamide derivatives.
All sulfonylureas, including glimepiride, can cause severe hypoglycemia [see Adverse Reactions (6.1)]. The patient’s ability to concentrate and react may be impaired as a result of hypoglycemia. These impairments may present a risk in situations where these abilities are especially important, such as driving or operating other machinery. Severe hypoglycemia can lead to unconsciousness or convulsions and may result in temporary or permanent impairment of brain function or death.
Patients must be educated to recognize and manage hypoglycemia. Use caution when initiating and increasing glimepiride doses in patients who may be predisposed to hypoglycemia (e.g., the elderly, patients with renal impairment, patients on other anti-diabetic medications). Debilitated or malnourished patients, and those with adrenal, pituitary, or hepatic impairment are particularly susceptible to the hypoglycemic action of glucose-lowering medications. Hypoglycemia is also more likely to occur when caloric intake is deficient, after severe or prolonged exercise, or when alcohol is ingested.
Early warning symptoms of hypoglycemia may be different or less pronounced in patients with autonomic neuropathy, the elderly, and in patients who are taking beta-adrenergic blocking medications or other sympatholytic agents. These situations may result in severe hypoglycemia before the patient is aware of the hypoglycemia.
There have been postmarketing reports of hypersensitivity reactions in patients treated with glimepiride, including serious reactions such as anaphylaxis, angioedema, and Stevens-Johnson Syndrome [see Adverse Reactions (6.2)]. If a hypersensitivity reaction is suspected, promptly discontinue glimepiride, assess for other potential causes for the reaction, and institute alternative treatment for diabetes.
Sulfonylureas can cause hemolytic anemia in patients with glucose 6-phosphate dehydrogenase (G6PD) deficiency. Because glimepiride is a sulfonylurea, use caution in patients with G6PD deficiency and consider the use of a non-sulfonylurea alternative.
There are also postmarketing reports of hemolytic anemia in patients receiving glimepiride who did not have known G6PD deficiency [see Adverse Reactions (6.2)].
The administration of oral hypoglycemic drugs has been reported to be associated with increased cardiovascular mortality as compared to treatment with diet alone or diet plus insulin. This warning is based on the study conducted by the University Group Diabetes Program (UGDP), a long-term, prospective clinical trial designed to evaluate the effectiveness of glucose-lowering drugs in preventing or delaying vascular complications in patients with non-insulin-dependent diabetes. The study involved 823 patients who were randomly assigned to one of four treatment groups.
UGDP reported that patients treated for 5 to 8 years with diet plus a fixed dose of tolbutamide (1.5 grams per day) had a rate of cardiovascular mortality approximately 2 and a half times that of patients treated with diet alone. A significant increase in total mortality was not observed, but the use of tolbutamide was discontinued based on the increase in cardiovascular mortality, thus limiting the opportunity for the study to show an increase in overall mortality. Despite controversy regarding the interpretation of these results, the findings of the UGDP study provide an adequate basis for this warning. The patient should be informed of the potential risks and advantages of glimepiride and of alternative modes of therapy.
Although only one drug in the sulfonylurea class (tolbutamide) was included in this study, it is prudent from a safety standpoint to consider that this warning may also apply to other oral hypoglycemic drugs in this class, in view of their close similarities in mode of action and chemical structure.
There have been no clinical studies establishing conclusive evidence of macrovascular risk reduction with glimepiride or any other anti-diabetic drug.
The following serious adverse reactions are discussed in more detail below and elsewhere in the labeling:
- Hypoglycemia [see Warnings and Precautions (5.1)]
- Hemolytic anemia [see Warnings and Precautions (5.3)]
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