Repaglinide

FDA Drug Information • Also known as: Repaglinide

Brand Names: Repaglinide
Drug Class: Glinide [EPC]
Route: ORAL
Dosage Form: TABLET
Product Type: HUMAN PRESCRIPTION DRUG

Description

11 DESCRIPTION Repaglinide is an oral blood glucose-lowering drug of the glinide class. Repaglinide, S(+)2-ethoxy-4(2((3-methyl-1-(2-(1-piperidinyl) phenyl)-butyl) amino)-2-oxoethyl) benzoic acid, is chemically unrelated to the oral sulfonylurea insulin secretagogues. Structural Formula of Repaglinide Repaglinide USP is a white to off-white solid with molecular formula C 27 H 36 N 2 O 4 and a molecular weight of 452.6. Repaglinide tablets, USP contain 0.5 mg, 1 mg, or 2 mg of repaglinide USP. In addition, each tablet contains the following inactive ingredients: anhydrous dibasic calcium phosphate, corn starch, glycerol, magnesium stearate, meglumine, microcrystalline cellulose, polacrillin potassium, poloxamer, and povidone. In addition, the 1 mg tablet contains ferric oxide (Sicovit Yellow 10) and 2 mg tablet contains ferric oxide (Sicovit Red 30). Chemical Structure

What Is Repaglinide Used For?

1 INDICATIONS AND USAGE Repaglinide tablets are indicated as an adjunct to diet and exercise to improve glycemic control in adults with type 2 diabetes mellitus. Limitation of Use: Repaglinide tablets should not be used in patients with type 1 diabetes mellitus or for the treatment of diabetic ketoacidosis. Repaglinide tablets are a glinide indicated as an adjunct to diet and exercise to improve glycemic control in adults with type 2 diabetes mellitus. (1) Limitation of Use : Not for treatment of type 1 diabetes mellitus or diabetic ketoacidosis (1)

Dosage and Administration

2 DOSAGE AND ADMINISTRATION The recommended starting dose is 0.5 mg orally before each meal if HbA1c is less than 8%; and 1 or 2 mg orally before each meal if HbA1c is 8% or greater. (2.1) The recommended dose range is 0.5 mg to 4 mg before meals, with a maximum daily dose of 16 mg. (2.1) The patient’s dose should be doubled up to 4 mg with each meal until satisfactory glycemic control is achieved. At least one week should elapse to assess response after each dose adjustment. (2.1) Instruct patients to skip the dose of repaglinide tablets if a meal is skipped. In patients who experience hypoglycemia, the dose of repaglinide tablets should be reduced. (2.1 ; 5.1) Instruct patients to take repaglinide tablets within 30 minutes before meals. (2.1) In patients with severe renal impairment (CrCl = 20 to 40 mL/min), recommended starting dose is 0.5 mg orally before each meal. (2.2) Dose modifications are required when used concominantly with some medications. (2.3 , 7) 2.1 Recommended Dosage and Administration The recommended starting dose for patients whose HbA 1c is less than 8% is 0.5 mg orally before each meal. For patients whose HbA 1c is 8% or greater the starting dose is 1 mg or 2 mg orally before each meal. The recommended dose range is 0.5 mg to 4 mg before meals, with a maximum daily dose of 16 mg. The patient’s dose should be doubled up to 4 mg with each meal until satisfactory glycemic control is achieved. At least one week should elapse to assess response after each dose adjustment. Instruct patients to take repaglinide tablets within 30 minutes before meals. Repaglinide tablets may be dosed 2, 3, or 4 times a day in response to changes in the patient’s meal pattern. In patients who skip meals, instruct patients to skip the scheduled dose of repaglinide tablets to reduce the risk of hypoglycemia. In patients who experience hypoglycemia, the dose of repaglinide tablets should be reduced [see Warnings and Precautions (5.1) ] . 2.2 Patients with Severe Renal Impairment In patients with severe renal impairment (CrCl = 20 to 40 mL/min) initiate repaglinide tablets 0.5 mg orally before each meal. Gradually titrate the dose, if needed to achieve glycemic control. 2.3 Dose Modifications for Drug Interactions Dosage adjustments are recommended in patients taking concomitant strong CYP3A4 or CYP2C8 inhibitors or strong CYP3A4 or CYP2C8 inducers [see Drug Interactions (7) , Clinical Pharmacology (12.3) ] . Concomitant use with gemfibrozil is contraindicated [see Contraindications (4) ] . Avoid concomitant use of repaglinide tablets with clopidogrel. If concomitant use cannot be avoided, initiate repaglinide tablets at 0.5 mg before each meal and do not exceed a total daily dose of 4 mg [see Drug Interactions (7) , Clinical Pharmacology (12.3) ] . Do not exceed a total daily dose of 6 mg of repaglinide tablets in patients receiving cyclosporine [see Drug Interactions (7) , Clinical Pharmacology (12.3) ] .

Side Effects (Adverse Reactions)

6 ADVERSE REACTIONS The following serious adverse reaction is also described elsewhere in the labeling: Hypoglycemia [see Warnings and Precautions (5.1) ] The most common adverse reactions (5% or greater incidence) among patients treated with repaglinide were: hypoglycemia, upper respiratory infection, headache, sinusitis, arthralgia, nausea, diarrhea, and back pain. (6.1) To report SUSPECTED ADVERSE REACTIONS, contact Rising Health, LLC at 1-833-395-6928 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. 6.1 Clinical Trials Experience Because clinical trials are conducted under widely varying designs, the adverse reaction rates reported in one clinical trial may not be easily compared to those rates reported in another clinical trial, and may not reflect the rates actually observed in clinical practice. Repaglinide has been administered to 2931 individuals during clinical trials. Approximately 1500 of these individuals with type 2 diabetes have been treated for at least 3 months, 1000 for at least 6 months, and 800 for at least 1 year. The majority of these individuals (1228) received repaglinide in one of five 1-year, active-controlled trials. Over one year, 13% of repaglinide patients were discontinued due to adverse reactions. The most common adverse reactions leading to withdrawal were hyperglycemia, hypoglycemia, and related symptoms. Table 1 lists the common adverse reactions for repaglinide patients compared to placebo in trials 12 to 24 weeks duration. Table 1: Adverse Reactions (%) occurring ≥ 2% in Repaglinide Treated Patients from Pool of 12 to 24 Week Placebo Controlled Trials* *See trial descriptions in Clinical Trials (14) Repaglinide N=352 Placebo N=108 Upper Respiratory Infection Headache Sinusitis Arthralgia Nausea Diarrhea Back Pain Rhinitis Constipation Vomiting Paresthesia Chest pain Bronchitis Dyspepsia Urinary tract infection Tooth disorder Allergy 16 11 6 6 5 5 5 3 3 3 3 3 2 2 2 2 2 8 10 2 3 5 2 4 3 2 3 3 1 1 2 1 0 0 Hypoglycemia In clinical trials with repaglinide, hypoglycemia is the most commonly observed adverse reaction. Mild or moderate hypoglycemia occurred in 31% of repaglinide treated patients and 7% of placebo treated patients [see Warnings and Precautions (5.1) ] . Hypoglycemia was reported in 16% of 1228 repaglinide patients, 20% of 417 glyburide patients, and 19% of 81 glipizide patients in 1-year controlled trials. Of repaglinide-treated patients with symptomatic hypoglycemia, none developed coma or required hospitalization. In a 24-week placebo controlled trial, patients who were naïve to oral hypoglycemic agent therapy and patients with a HbA 1c below 8% at baseline had a higher frequency of hypoglycemia. Weight Gain There was no average gain in body weight when patients previously treated with oral hypoglycemic agents were switched to repaglinide. The average weight gain in patients treated with repaglinide and not previously treated with sulfonylurea drugs was 3.3%. Cardiovascular Events The incidence of total serious cardiovascular adverse events, including ischemia, was higher for repaglinide (51/1228 or 4%) than for sulfonylurea drugs (13/498 or 3%) in controlled comparator clinical trials. Table 2: Summary of Serious Cardiovascular Events in Trials Comparing Repaglinide to Sulfonylureas (% of total patients with events) *: glyburide and glipizide Repaglinide SU* Total Exposed Serious CV Events Cardiac Ischemic Events Deaths due to CV Events 1228 4% 2% 0.5% 498 3% 2% 0.4% Seven controlled clinical trials included repaglinide combination therapy with NPH-insulin (n=431), insulin formulations alone (n=388) or other combinations (sulfonylurea plus NPH-insulin or repaglinide plus metformin) (n=120). There were six serious adverse events of myocardial ischemia in patients treated with repaglinide plus NPH-insulin from two studies, and one event in patients using insulin formulations alone from another study [see Warnings and Precautions (5.3) ] . Combination Therapy with...

Drug Interactions

7 DRUG INTERACTIONS Clinically Important Drug Interactions with Repaglinide Table 3 includes a list of drugs with clinically important drug interactions when administered concomitantly with repaglinide and instructions for preventing or managing them. Table 3: Clinically Important Drug Interactions with Repaglinide Gemfibrozil Clinical Impact: Gemfibrozil significantly increased repaglinide exposures by 8.1 fold [see Clinical Pharmacology (12.3) ] Intervention: Do not administer repaglinide to patients receiving gemfibrozil [see Contraindications (4) ] . Clopidogrel Clinical Impact: Clopidogrel increased repaglinide exposures by 3.9 to 5.1 fold [see Clinical Pharmacology (12.3) ] Intervention: Avoid concomitant use of repaglinide with clopidogrel. If concomitant use cannot be avoided, initiate repaglinide at 0.5 mg before each meal and do not exceed a total daily dose of 4 mg [see DOSAGE AND ADMINISTRATION (2.3) ] . Increased frequency of glucose monitoring may be required during concomitant use. Cyclosporine Clinical Impact: Cyclosporine increased low dose repaglinide exposures by 2.5 fold [see Clinical Pharmacology (12.3) ] Intervention: Daily maximum repaglinide dose should be limited to 6 mg, and increased frequency of glucose monitoring may be required when repaglinide is co-administered with cyclosporine. CYP2C8 and CYP3A4 Inhibitors Intervention: Repaglinide dose reductions and increased frequency of glucose monitoring may be required when co-administered. Examples: Drugs that are known to inhibit CYP3A4 include antifungal agents (ketoconazole, itraconazole) and antibacterial agents (clarithromycin, erythromycin). Drugs that are known to inhibit CYP2C8 include trimethoprim, gemfibrozil, montelukast, deferasirox, and clopidiogrel. CYP2C8 and CYP3A4 Inducers Intervention: Repaglinide dose increases and increased frequency of glucose monitoring may be required when co-administered. Examples: Drugs that induce the CYP3A4 and/or 2C8 enzyme systems include rifampin, barbiturates, and carbamezapine Drugs That May Increase the Risk of Hypoglycemia Intervention: Repaglinide dose reductions and increased frequency of glucose monitoring may be required when co-administered. Examples: Antidiabetic agents, ACE inhibitors, angiotensin II receptor blocking agents, disopyramide, fibrates, fluoxetine, monoamine oxidase inhibitors, nonsteroidal anti-inflammatory agents (NSAIDs), pentoxifylline, pramlintide, propoxyphene, salicylates, somatostatin analogs (e.g., octreotide), and sulfonamide antibiotics Drugs That May Decrease the Blood Glucose Lowering Effect of Repaglinide Intervention: Repaglinide dose increases and increased frequency of glucose monitoring may be required when co-administered. Examples: Atypical antipsychotics (e.g., olanzapine and clozapine), calcium channel antagonists, corticosteroids, danazol, diuretics, estrogens, glucagon, isoniazid, niacin, oral contraceptives, phenothiazines, progestogens (e.g., in oral contraceptives),...

Contraindications

4 CONTRAINDICATIONS Repaglinide tablets are contraindicated in patients with: Concomitant use of gemfibrozil [see Drug Interactions (7) ] Known hypersensitivity to repaglinide or any inactive ingredients Concomitant use with gemfibrozil (4) Known hypersensitivity to repaglinide or any inactive ingredients (4)

Pregnancy and Breastfeeding

8.1 Pregnancy Risk Summary Limited available data from case reports and case series with repaglinide use in pregnant women have not identified a drug-associated risk of major birth defects, miscarriage or adverse maternal or fetal outcomes. There are risks to the mother and fetus associated with poorly controlled diabetes in pregnancy (see Clinical Considerations) . Teratogenicity was not observed in rats and rabbits administered repaglinide during organogenesis at approximately 60 and 1 times the maximum daily clinical dose, based on body surface area. No adverse developmental effects were observed in offspring of rats administered repaglinide during late gestation and lactation at approximately 4 times the maximum daily clinical dose (see Data). The estimated background risk of major birth defects is 6 to 10% in women with pre-gestational diabetes with a HbA1c>7 and has been reported to be as high as 20 to 25% in women with a HbA1c>10. The estimated background risk of miscarriage for the indicated population is unknown. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2 to 4% and 15 to 20%, respectively. Clinical Considerations Disease-associated maternal and/or embryo/fetal risk Poorly controlled diabetes in pregnancy increases the maternal risk for diabetic ketoacidosis, pre-eclampsia, spontaneous abortions, preterm delivery, and delivery complications. Poorly controlled diabetes increases the fetal risk for major birth defects, stillbirth and macrosomia related morbidity. Data Animal Data Repaglinide was not teratogenic in rats or rabbits at doses 60 times (rats) and approximately 1 times (rabbit) clinical exposure (on a mg/m 2 basis) when administered during the period of organogenesis. Offspring of rat dams exposed to repaglinide at ≥22 times clinical exposure on a mg/m 2 basis during days 17 to 22 of gestation and during lactation were less viable and developed...

Overdosage

10 OVERDOSAGE Severe hypoglycemic reactions with coma, seizure, or other neurological impairment may occur and constitute medical emergencies requiring immediate hospitalization. Hypoglycemic symptoms without loss of consciousness or neurologic findings should be treated aggressively with oral glucose and adjustments in drug dosage and/or meal patterns. Close monitoring may continue until the physician is assured that the patient is out of danger. Patients should be closely monitored for a minimum of 24 to 48 hours, since hypoglycemia may recur after apparent clinical recovery. There is no evidence that repaglinide is dialyzable using hemodialysis.

How Supplied

16 HOW SUPPLIED/STORAGE AND HANDLING Repaglinide Tablets USP, 0.5 mg are white to off white, round, biconvex uncoated tablets, debossed with ‘H’ on one side and ‘10’ on other side. Bottles of 100 NDC 57237-157-01 Bottles of 500 NDC 57237-157-05 Repaglinide Tablets USP, 1 mg are yellow colored, round, biconvex uncoated tablets, debossed with ‘H’ on one side and ‘11’ on other side. Bottles of 100 NDC 57237-158-01 Bottles of 500 NDC 57237-158-05 Repaglinide Tablets USP, 2 mg are peach colored, mottled round, biconvex uncoated tablets, debossed with ‘H’ on one side and ‘12’ on other side. Bottles of 100 NDC 57237-159-01 Bottles of 500 NDC 57237-159-05 Store at 20° to 25°C (68° to 77°F) [see USP Controlled Room Temperature]. Protect from moisture. Keep bottles tightly closed. Dispense in tight containers with safety closures.

About This Information

This drug information is sourced from FDA-approved labeling via the openFDA database. It is intended for educational and reference purposes only. This is not medical advice. Always consult your healthcare provider before making decisions about medication. Drug information may be updated by the FDA; check with your pharmacist for the most current information.

What are side effects?

Side effects are unwanted reactions that can occur when taking a medication. They range from mild (headache, nausea) to severe (allergic reactions, organ damage). Not everyone experiences side effects, and severity varies. Report any concerning side effects to your doctor.

What are drug interactions?

Drug interactions occur when a medication is affected by another drug, food, or supplement. Interactions can make medications less effective or cause dangerous side effects. Always tell your doctor about all medications and supplements you take.