What is the Z-Pak dosing regimen for Azithromycin?

The Z-Pak dosing regimen for Azithromycin is characterized by an initial higher dose followed by a tapering dose. The correct regimen consists of administering 500 mg on the first day to rapidly achieve therapeutic levels in the body. This is followed by a lower maintenance dose of 250 mg taken daily for the next four days. This approach allows for effective treatment of bacterial infections while minimizing the potential for side effects associated with higher doses over an extended period.

This specific dosing strategy leverages the pharmacokinetics of azithromycin, which has a long half-life, enabling the shorter duration of treatment while still being effective in clearing infections. The gradual decrease in dosage helps to maintain adequate drug levels while reducing the risk of developing antibiotic resistance.

In contrast, the other options suggest regimens that do not align with the established Z-Pak protocol, either administering incorrect dosing or incorrect durations that would compromise the effectiveness of the treatment.