What the FDA labels say about taking them together
Cabazitaxel and clarithromycin
Cabazitaxel's FDA label of October 7, 2025 names clarithromycin in its drug interactions section; the clarithromycin label PlainMeds reads does not name cabazitaxel. The cabazitaxel label: “Strong CYP3A inhibitors may increase plasma concentrations of cabazitaxel.”
Check it at the source: the cabazitaxel FDA label on DailyMed (effective October 7, 2025, Sanofi-Aventis U.S. LLC); the clarithromycin FDA label on DailyMed (effective April 9, 2026, Solaris Pharma Corporation).
What does the cabazitaxel label say about clarithromycin?
Cabazitaxel label, drug interactionsStrong CYP3A inhibitors (e.g., ketoconazole, itraconazole, clarithromycin, atazanavir, indinavir, nefazodone, nelfinavir, ritonavir, saquinavir, telithromycin, voriconazole) may increase plasma concentrations of cabazitaxel.
Source: FDA drug label (Jevtana), Sanofi-Aventis U.S. LLC, effective October 7, 2025 (SPL set de3d9c26-572b-4ea4-9b2d-dd58a2b3e8fa), via openFDA; the full label on DailyMed
What does the clarithromycin label say about cabazitaxel?
Clarithromycin's label (effective April 9, 2026) does not name cabazitaxel in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (Clarithromycin), Solaris Pharma Corporation, effective April 9, 2026 (SPL set 4d42821d-ce7a-7d64-e063-6294a90a0875), via openFDA; the full label on DailyMed
These are the labels' own sentences. PlainMeds does not grade interactions; a pharmacist or prescriber can say what they mean for one person's medicines.
Both medicines on the record
| Cabazitaxel | Clarithromycin | |
|---|---|---|
| Labeled for | Prostate cancer | Bacterial infections, Acid reflux and ulcers |
| Boxed warning | Yes | No |
| Pharmacy cost (NADAC) | n/a | $0.466 per tablet 500 mg tablet |
| Shortage now | No current entry | No current entry |
Source: FDA NDC Directory, CMS NADAC of October 7, 2026 and the FDA Drug Shortage Database (FDA files October 8, 2026)
What next?
- Check more medicines together
- up to five at once