Pharmacokinetics Chapter 1

1. Pharmacokinetics
   1. absorption
   2. distribution
   3. metabolism
   4. elimination
2. Routes of administration
   1. Administration by mouth
      1. oral
         1. enteric-coated
         2. extended-release (ER or XR)
      2. sublingual/buccal
   2. Parenteral
      1. intravenous (IV)
      2. intramuscular (IM)
      3. Subcutaneous (SC, subQ, SQ, subcu)
      4. Intradermal
   3. Other
      1. inhalation, topical, transdermal, rectal
3. Entry of Drugs Into Circulation
   1. Source
   2. Across plasma membrane
      1. passive diffusion
      2. facilitated diffusion
      3. active transport
      4. endocytosis
   3. Bioavailability
      1. determination
      2. influencing factors
         1. first-pass metabolism
         2. solubility
         3. chemical instability
         4. nature of drug formulation
4. From Circulation to Extracellular Fluid
   1. Drug distribution
   2. Factors affecting drug distribution
5. Drug clearance through metabolism
   1. clearance (CL)
   1. Kinetics of metabolism
   2. Reactions of drug metabolism
      1. Phase I rxns
         1. p450 bkg
         2. family 1, 2
            1. xenobiotics
      2. Phase II
6. Clearance by Kidney
   1. "ion trapping"
7. Clearance by other routes
   1. dosage changes