Xanax with antibiotics: interactions and safety
Antibiotic courses are common, short-term and often combined with chronic medications such as Xanax (Alprazolam). Most antibiotics do not interfere meaningfully with Alprazolam at 0.25mg, 0.5mg, 1mg, 2mg, but a few classes do, and a small number of combinations are best avoided.
Common antibiotic interactions
Macrolides (clarithromycin, erythromycin) and certain antifungals can inhibit hepatic metabolism (CYP3A4) and raise plasma levels of many medications including some Anti-anxiety Medications agents. Rifampicin has the opposite effect, accelerating metabolism. Most penicillins, cephalosporins, fluoroquinolones and tetracyclines have no clinically meaningful interaction with Alprazolam at 0.25mg, 0.5mg, 1mg, 2mg.
Practical guidance
According to the prescribing information for Alprazolam, an antibiotic course should be reviewed by the prescriber or pharmacist for known interactions before Xanax is co-administered. Adjusted 0.25mg, 0.5mg, 1mg, 2mg dosing or temporary substitution is sometimes preferred for the duration of the antibiotic course.
Frequently asked questions
Can I take Xanax during an antibiotic course? ▾
For most common antibiotics, yes. A few classes — notably macrolides and azole antifungals — alter how Alprazolam is metabolised and may need a temporary 0.25mg, 0.5mg, 1mg, 2mg adjustment. The prescribing pharmacist should review any new antibiotic against the existing Xanax regimen.
Will antibiotics make Xanax stop working? ▾
Most antibiotics do not affect Xanax efficacy. Rifampicin and a few others can lower Alprazolam levels and reduce effect; in those cases the prescriber may adjust the dose during and shortly after the antibiotic course.
More on Xanax
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