Ciprofloxacin and Olanzapine: Drug Interaction Guide
Quick answer: This combination requires caution. Ciprofloxacin and Olanzapine can be used together with adjustments and monitoring.
How Ciprofloxacin interacts with Olanzapine
Ciprofloxacin is a potent CYP1A2 inhibitor and reduces olanzapine clearance, increasing plasma concentrations and the risk of sedation, orthostasis, and anticholinergic effects.
What you should do
Reduce the olanzapine dose by approximately 50% during ciprofloxacin therapy or switch to levofloxacin. Counsel on sedation and fall risk in older adults.
Key facts
Severity
Moderate — caution required
Mechanism
Ciprofloxacin is a potent CYP1A2 inhibitor and reduces olanzapine clearance, increasing plasma concentrations and the ri...
Action
Reduce the olanzapine dose by approximately 50% during ciprofloxacin therapy or switch to levofloxacin. Counsel on sedat...
Frequently asked questions
Can I take Ciprofloxacin and Olanzapine together?
With caution. Reduce the olanzapine dose by approximately 50% during ciprofloxacin therapy or switch to levofloxacin. Counsel on sedation and fall risk in older adults.
What is the severity of this interaction?
The interaction between Ciprofloxacin and Olanzapine is classified as Moderate — caution required. Ciprofloxacin is a potent CYP1A2 inhibitor and reduces olanzapine clearance, increasing plasma concentrations and the risk of sedation, orthostasis, and anticholinergic effects.
What should I do if I'm prescribed both?
Reduce the olanzapine dose by approximately 50% during ciprofloxacin therapy or switch to levofloxacin. Counsel on sedation and fall risk in older adults. Always consult your prescribing clinician — do not stop or change medications without medical guidance.
Last reviewed: by iMedic Medical Editorial Team. Our editorial process.