US Patent 7122204 Antibiotic composition with inhibitor

Antibiotic composition having four dosage forms with different release profiles providing for initial release of a beta lactam antibiotic followed by release of a beta-lactamase inhibitor, followed by release of the antibiotic followed by release of the inhibitor. In a preferred embodiment, release from the second, third and fourth dosage forms is initiated after the component released from the immediately previous form reaches Cmax.