Does probenecid increase tigecycline's serum concentration?

Does probenecid increase tigecycline’s serum concentration?

Yes. Probenecid can increase tigecycline serum concentrations. Tigecycline is eliminated partly through renal tubular secretion, and probenecid is known to inhibit renal tubular secretion. By reducing that secretion, probenecid can raise tigecycline levels in the blood.

How does this interaction happen?

Tigecycline is cleared in part via transport processes in the kidney (including renal tubular secretion). Probenecid inhibits those tubular secretory pathways, which can reduce tigecycline’s clearance and increase its serum exposure.

What does this mean for dosing or safety?

Higher tigecycline exposure could increase the risk of tigecycline-related adverse effects. If probenecid is used alongside tigecycline, clinicians typically monitor patients for tolerability and consider whether dose adjustment is needed based on clinical judgment and the patient’s renal function and overall risk profile.