Which drug has a half-life of 7 hours?

Gemifloxacin has a half-life of approximately 7 hours, which makes it distinct among the given options. Understanding the half-life of a drug is crucial for determining its dosing schedule and the duration for which it stays effective in the body.

In this case, gemifloxacin’s half-life allows for a once-daily dosing regimen, which can enhance patient compliance and manage infections effectively. This means that, after each dose, the drug concentration decreases by half in approximately 7 hours, leading to a predictable pharmacokinetic profile.

Other fluoroquinolone antibiotics listed have different half-lives: ciprofloxacin generally has a shorter half-life, around 4 hours; levofloxacin is usually about 6 to 8 hours; and moxifloxacin typically ranges from 12 to 15 hours. These variations affect how often they need to be administered and can influence the choice of antibiotic in treating specific infections. Therefore, gemifloxacin is correctly identified due to its specific half-life of 7 hours, emphasizing its unique profile among these options.