RESUMO
Bioavailability of alpha-methyldopa from a film coated tablet Dopegyt (EGIS Pharmaceutical Works, Budapest, Hungary) and from Aldometil (MSD, Sharp and Dohme GmbH, Munich, FRG) containing 250 mg of effective substance, was investigated in a crossover study in six patients with mild hypertension having normal renal and liver functions. Alpha-methyldopa was determined in plasma by fluorometry. There was no difference in the pharmacokinetic parameters calculated (Cl, Vd, AUC, t1/2) indicating that the two preparations are bioequivalent.
Assuntos
Metildopa/farmacocinética , Adulto , Disponibilidade Biológica , Feminino , Humanos , Hipertensão/tratamento farmacológico , Masculino , Metildopa/administração & dosagem , Metildopa/uso terapêutico , Pessoa de Meia-IdadeRESUMO
The authors studied the effect of a 0.5 mg intravenous bolus injection of digoxin on human red blood cell glucose-6-phosphate activity under in vivo circumstances. Digoxin administration resulted in a small but statistically significant rise in the enzyme activity. This effect of digoxin seems to support the hypothesis that the circulating sodium transport inhibitor substance or natriuretic hormone found in a group of patients with essential hypertension may be an endogenous digitalis because the two substances act similarly in this respect.