Drug Name Wellbutrin SR

Sulfonamide diuretics compete with urate for the tubular organic anion secretory system. These agents act in the distal portion of the distal tubule and the proximal part of the collecting ducts where Na+ is reabsorbed in exchange for K+ or H+. Their diuretic effectiveness is relatively minor.
Under these conditions, conversion to reactive metabolites that attack DNA takes place (e. g. , the hydroxylamine shown). The effect is bactericidal. A similar mechanism is involved in the antiprotozoal action on Trichomonas vaginalis (causative agent of vaginitis and urethritis) and Entamoeba histolytica (causative agent of large bowel inflammation, amebic dysentery, and hepatic abscesses).

 

The central nervous actions of nicotine are thought to be mediated largely by presynaptic receptors that facilitate transmitter release from excitatory aminoacidergic (glutamatergic) nerve terminals in the cerebral cortex. Nicotine increases vigilance and the ability to concentrate.
Unlike barbiturates, benzodiazepine derivatives administered orally lack a general anesthetic action; cerebral activity is not globally inhibited (respiratory paralysis is virtually impossible) and autonomic functions, such as blood pressure, heart rate, or body temperature, are unimpaired. Thus, benzodiazepines possess a therapeutic margin considerably wider than that of barbiturates.