Recent reports demonstrate that hydroxy metabolites of desipramine (DMI) have pharmacologic activity and do not just produce side effects. In patients treated with DMI, we determined the ratio of 2-hydroxydesipramine (2-OH-DMI) to drug at steady state. The ratios in the elderly patients were higher than in younger patients, and whereas plasma levels of 2-OH-DMI increased with age, urinary clearances decreased. The known decrease in glomerular filtration with age may explain the selective increase of 2-OH-DMI concentration in the elderly.
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| http://dx.doi.org/10.1038/clpt.1982.8 | DOI Listing |
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