biopharmaceutics

[bī′ō-fär′mə-sōōtĭks]
n.
  1. The study of the physical and chemical properties of drugs and their proper dosage as related to the onset, duration, and intensity of drug action.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.