Comparative Pharmacology
Head-to-head clinical analysis: AVANDAMET versus ROSIGLITAZONE MALEATE AND GLIMEPIRIDE.
Peer-Reviewed Evidence
Head-to-head clinical analysis: AVANDAMET versus ROSIGLITAZONE MALEATE AND GLIMEPIRIDE.
AVANDAMET vs ROSIGLITAZONE MALEATE AND GLIMEPIRIDE
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
AVANDAMET combines rosiglitazone, a thiazolidinedione that improves insulin sensitivity by activating peroxisome proliferator-activated receptor gamma (PPARγ), and metformin, a biguanide that decreases hepatic glucose production, reduces intestinal glucose absorption, and improves insulin sensitivity.
Rosiglitazone is a thiazolidinedione that acts as an agonist at peroxisome proliferator-activated receptor gamma (PPARγ), increasing insulin sensitivity in adipose tissue, skeletal muscle, and liver. Glimepiride is a sulfonylurea that stimulates insulin release from pancreatic beta cells by blocking ATP-sensitive potassium channels.
Oral, initial dose of rosiglitazone 4 mg/metformin 500 mg twice daily or rosiglitazone 2 mg/metformin 500 mg twice daily; maximum recommended dose rosiglitazone 8 mg/metformin 2000 mg per day.
Oral, initial dose 4 mg rosiglitazone/1 mg glimepiride once daily, titrate based on glycemic response; maximum dose 8 mg rosiglitazone/4 mg glimepiride once daily.
None Documented
None Documented
Rosiglitazone: 3-4 hours (terminal); metformin: 6.2 hours (terminal). No accumulation with normal renal function.
Rosiglitazone: 3-4 hours. Glimepiride: 5-9 hours. Clinically, twice-daily dosing for rosiglitazone and once-daily for glimepiride.
Renal (90-95% as unchanged drug for rosiglitazone; metformin is 90% renally eliminated unchanged). Biliary/fecal: minor (<5% for both).
Rosiglitazone: primarily hepatic metabolism with <1% excreted unchanged in urine; fecal (23%) and urinary (64%) elimination as metabolites. Glimepiride: ~60% excreted in urine as metabolites, ~40% in feces as metabolites.
Category C
Category A/B
Thiazolidinedione and Biguanide Combination
Thiazolidinedione