in the second group , addition of valpromide resulted in a significant increase of antidepressant plasma levels : from 70.5 +/- 35 to 105.5 +/- 49 ng/ml ( p less than 0.0003 ) for amitriptyline , and from 61.0 +/- 34 to 100.5 +/- 65 ng/ml ( p less than 0.01 ) for nortriptyline .
C0003289
antidepressant
C0002600
amitriptyline