What the FDA labels say about taking them together
Neomycin and sorafenib
Sorafenib's FDA label of August 28, 2023 names neomycin in its drug interactions section; the neomycin label PlainMeds reads does not name sorafenib. The sorafenib label: “Neomycin The concomitant use of NEXAVAR with neomycin decreased the mean AUC of sorafenib, which may decrease the antitumor activity.”
Check it at the source: the neomycin FDA label on DailyMed (effective February 12, 2026); the sorafenib FDA label on DailyMed (effective August 28, 2023, Bayer HealthCare Pharmaceuticals Inc.).
What does the neomycin label say about sorafenib?
Neomycin's label (effective February 12, 2026) does not name sorafenib in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (Neomycin Sulfate), Aldermed Inc., effective February 12, 2026 (SPL set 4978bb06-8b7c-9a44-e063-6294a90ac4cf), via openFDA; the full label on DailyMed
What does the sorafenib label say about neomycin?
Sorafenib label, drug interactionsNeomycin The concomitant use of NEXAVAR with neomycin decreased the mean AUC of sorafenib, which may decrease the antitumor activity.
Source: FDA drug label (Nexavar), Bayer HealthCare Pharmaceuticals Inc., effective August 28, 2023 (SPL set b50667e4-5ebc-4968-a646-d605058dbef0), 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
| Neomycin | Sorafenib | |
|---|---|---|
| Labeled for | n/a | n/a |
| Boxed warning | Yes | No |
| Pharmacy cost (NADAC) | $0.833 per tablet 500 mg tablet | 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