What the FDA labels say about taking them together
Efbemalenograstim alfa and eflapegrastim
Efbemalenograstim alfa's FDA label of May 19, 2026 names eflapegrastim in its warnings section; the eflapegrastim label PlainMeds reads does not name efbemalenograstim alfa. The efbemalenograstim alfa label: “RYZNEUTA is contraindicated in patients with a history of serious allergic reactions to RYZNEUTA or other rhG-CSF products such as pegfilgrastim, eflapegrastim or filgrastim products.”
Check it at the source: the efbemalenograstim alfa FDA label on DailyMed (effective May 19, 2026); the eflapegrastim FDA label on DailyMed (effective February 18, 2026).
What does the efbemalenograstim alfa label say about eflapegrastim?
Efbemalenograstim alfa label, warningsRYZNEUTA is contraindicated in patients with a history of serious allergic reactions to RYZNEUTA or other rhG-CSF products such as pegfilgrastim, eflapegrastim or filgrastim products.
Source: FDA drug label (RYZNEUTA), Acrotech Biopharma Inc, effective May 19, 2026 (SPL set 290ed754-758c-9cae-e063-6294a90ae68b), via openFDA; the full label on DailyMed
What does the eflapegrastim label say about efbemalenograstim alfa?
Eflapegrastim's label (effective February 18, 2026) does not name efbemalenograstim alfa in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (Rolvedon), Spectrum Pharmaceuticals, Inc., effective February 18, 2026 (SPL set 6e436115-62e7-4729-aeb0-ff78ea685206), 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
| Efbemalenograstim alfa | Eflapegrastim | |
|---|---|---|
| Labeled for | n/a | n/a |
| Boxed warning | No | 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