Criteria such as minimum inhibitory concentration and minimum bactericidal concentration are insufficient when evaluating an antibiotic, says James McCulley, M.D., of Dallas Texas. They don�t take drug concentrations into account. Instead, Dr. McCulley recommends that you study the following:

• pharmacokinetics (bioavilability)
• pharmacotherapeutics
• pharmacodynamics
• "pharmacotorts" (legal ramifications) and pharmacoeconomics (cost issues).