Pharmacokinetics of ceftriaxone.

Ceftriaxone fulfills many of the qualities of an ideal antibiotic: a prolonged elimination half-life, which results from a "restrictive" excretion pattern; saturable protein binding, which provides the theoretical basis for administering the total daily dose as a single bolus; and once-a-day dosing, which provides plasma and tissue concentrations that exceed the MIC for most susceptible pathogens for 24 hours.