Assuntos
Aminas/uso terapêutico , Analgésicos/uso terapêutico , Ácidos Cicloexanocarboxílicos/uso terapêutico , Neuropatias Diabéticas/tratamento farmacológico , Ácido gama-Aminobutírico/uso terapêutico , Aminas/administração & dosagem , Aminas/efeitos adversos , Ácidos Cicloexanocarboxílicos/administração & dosagem , Ácidos Cicloexanocarboxílicos/efeitos adversos , Preparações de Ação Retardada , Diabetes Mellitus Tipo 2/fisiopatologia , Método Duplo-Cego , Esquema de Medicação , Feminino , Gabapentina , Humanos , Masculino , Comprimidos , Ácido gama-Aminobutírico/administração & dosagem , Ácido gama-Aminobutírico/efeitos adversosRESUMO
Glumetz (Depomed, Inc., Menlo Park, CA, USA) is a recently approved gastric retentive extended-release formulation of metformin (M-ER) that provides effective, sustained and well-tolerated glycemic control with once daily administration. Pharmacokinetic studies have demonstrated a similar bioavailability of M-ER administered once daily to immediate-release metformin given twice daily. In addition, M-ER has demonstrated a nearly linear dose proportionality with a relative bioavailability of highest dose to lowest dose of 80%, whereas with immediate-release metformin the relative bioavailability of the highest dose to the lowest dose is only 58%. M-ER demonstrated a positive food effect and should be administered with a meal, preferably the evening meal. Because metformin is only eliminated through renal mechanisms, the use of M-ER, as is the case with other formulations, is contraindicated in patients with renal impairment. Administration of M-ER with sulfonylureas (SUs) had no effect on the pharmacokinetics of metformin. In controlled clinical trials M-ER demonstrated efficacy for 24 weeks as a monotherapy or in combination with SU. Additionally, glycemic control was maintained for an extra 24 weeks in an open-label monotherapy extension study of M-ER. M-ER was well tolerated in all studies.