What the FDA labels say about taking them together
Polymyxin b and verteporfin
Verteporfin's FDA label of August 27, 2025 names polymyxin b in its drug interactions section; the polymyxin b label PlainMeds reads does not name verteporfin.
Check it at the source: the polymyxin b FDA label on DailyMed (effective May 9, 2025, Gland Pharma Limited); the verteporfin FDA label on DailyMed (effective August 27, 2025, Bausch Health US LLC).
What does the polymyxin b label say about verteporfin?
Polymyxin b's label (effective May 9, 2025) does not name verteporfin in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (POLYMYXIN B), Gland Pharma Limited, effective May 9, 2025 (SPL set dc74dee2-1d0b-4fab-a29b-1755fdb5da75), via openFDA; the full label on DailyMed
What does the verteporfin label say about polymyxin b?
Verteporfin label, drug interactionsPossible examples include the following: Calcium channel blockers, polymyxin B or radiation therapy could enhance the rate of VISUDYNE uptake by the vascular endothelium.
Source: FDA drug label (Visudyne), Bausch Health US LLC, effective August 27, 2025 (SPL set 952f4c80-50b1-4308-9ee6-311ffefb13df), 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
| Polymyxin b | Verteporfin | |
|---|---|---|
| Labeled for | Bacterial infections, Urinary tract infections | n/a |
| Boxed warning | Yes | No |
| Pharmacy cost (NADAC) | n/a | n/a |
| 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