Filgrastim and Pegfilgrastim Timing Against Chemotherapy (Labels)
Filgrastim and pegfilgrastim timing against chemotherapy, as the reference labels state it.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Product
- Pegfilgrastim (Neulasta label)
- This cycle's chemotherapy, last given
- 2026-10-12T10:00
- Planned growth-factor time
- 2026-10-13T09:00
- Next cycle's chemotherapy start
- 2026-11-02T10:00
- Pegfilgrastim
- Adult
Result: Pegfilgrastim: not allowed by the label: 2026-10-13 09:00 is 23 h after chemotherapy, and the label says not until 24 hours after. Earliest: 2026-10-13 10:00.
The tool opens with these values already filled in. Replace them with your own.
What you enter
- Product
- This cycle's chemotherapy, last given (YYYY-MM-DDTHH:MM)
- Planned growth-factor time (YYYY-MM-DDTHH:MM)
- Next cycle's chemotherapy start (YYYY-MM-DDTHH:MM, optional)
- Pegfilgrastim: adult or pediatric patient
- Pegfilgrastim: weight (needed for a pediatric patient)
How this is calculated
Citation
FDA labels on DailyMed: NEUPOGEN (filgrastim), section 2.1 (at least 24 hours after, not within 24 hours before chemotherapy); Neulasta (pegfilgrastim), section 2.1 and Table 1 (not between 14 days before and 24 hours after; 6 mg; pediatric table). Read the sources: NEUPOGEN label ↗, Neulasta label ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.