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Rosiglitazone/Glimepiride
Diabetes
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Drug Name:

Rosiglitazone/Glimepiride Rx

Generic Name and Formulations:
Rosiglitazone (as maleate), glimepiride; 4mg/1mg, 4mg/2mg, 4mg/4mg, 8mg/2mg, 8mg/4mg; tabs.

Company:
Various generic manufacturers

Therapeutic Use:

Indications for Rosiglitazone/Glimepiride:

Adjunct to diet and exercise for type 2 diabetes when dual therapy is appropriate.

Adult:

≥18yrs: Take once daily with first meal of the day. Drug-naive: 4mg/1mg. Previously on thiazolidinedione monotherapy: initially 4mg/1mg or 4mg/2mg; if inadequate response after 1–2 weeks, may increase glimepiride component in ≤2mg increments at 1–2 week intervals. Previously on sulfonylurea monotherapy: initially 4mg/1mg or 4mg/2mg; if inadequate response, may increase rosiglitazone component after 8–12 weeks. Previously on rosiglitazone and glimepiride: switch on a mg/mg basis. Max 8mg rosiglitazone/4mg glimepiride per day. Elderly, debilitated, malnourished, renal, hepatic or adrenal insufficiency: initially 4mg/1mg once daily; titrate carefully to avoid hypoglycemia.

Children:

<18yrs: not established.

Contraindications:

NYHA Class III or IV heart failure. Sulfonamide allergy.

Warnings/Precautions:

Not for treating type 1 diabetes or diabetic ketoacidosis. Symptomatic HF or acute coronary syndromes: not recommended; discontinue if occurs. CHF: NYHA Class I or II: increased risk of cardiovascular events (monitor). Edema. May increase plasma volume (monitor for heart failure); discontinue if cardiac status deteriorates. Monitor for weight gain/fluid retention. Risk of cardiovascular mortality. Hepatic disease. Do not start therapy in active liver disease or if ALT >2.5xULN. Monitor transaminases at baseline, then periodically. If ALT is mildly elevated (≤2.5xULN), follow-up and monitor closely; discontinue if ALT >3xULN or jaundice occurs. Not for use in patients with history of troglitazone-associated jaundice. Risk of fractures (esp. women). G6PD deficiency. Stress, uncompensated strenuous exercise, deficient caloric intake, or alcohol intoxication: increased risk of hypoglycemia. Resumption of premenopausal ovulation in anovulatory patients may occur (may result in unintended pregnancy). Reevaluate if menstrual dysfunction occurs. Elderly. Labor & delivery. Pregnancy (Cat.C) (consider using insulin instead), nursing mothers: not recommended.

Interactions:

Concomitant insulin or nitrates: not recommended. Potentiated by CYP2C8 inhibitors (eg, gemfibrozil). Antagonized by CYP2C8 inducers (eg, rifampin). May be potentiated by alcohol, NSAIDs, highly protein bound drugs, oral miconazole, salicylates, sulfonamides, chloramphenicol, warfarin, probenecid, MAOIs, β-blockers. May be antagonized by diuretics, corticosteroids, phenothiazines, thyroid products, phenytoin, niacin, sympathomimetics, isoniazid, estrogens, oral contraceptives. May be affected by CYP2C9 substrates (eg, rifampin, fluconazole). Separate colesevelam dosing by ≥4 hours. Monitor for 1–2 weeks if transferring from long-acting sulfonylureas.

Pharmacological Class:

Thiazolidinedione + sulfonylurea.

Adverse Reactions:

Headache, hypoglycemia, nasopharyngitis, upper respiratory tract infection, injury, edema, weight gain, anemia, macular edema (possible), hypersensitivity reactions (eg, angioedema, Stevens-Johnson syndrome); discontinue if occurs. See full labeling re: risk of myocardial ischemic events.

Note:

Formerly known under the brand name Avandaryl.

How Supplied:

Contact supplier.

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