Is neupogen an injection?

Yes, Neupogen (filgrastim) is an injection.[1]

How is Neupogen administered?

It's given subcutaneously (under the skin) or intravenously (into a vein), typically daily during chemotherapy cycles to boost white blood cell production. Single-use prefilled syringes or vials allow self-injection at home after training.[1][2]

What conditions is it used for?

Neupogen treats neutropenia from chemotherapy, bone marrow transplants, or congenital issues, reducing infection risk.[1]

Available forms and dosages

Comes as:
- Prefilled syringes (300 mcg/0.5 mL or 480 mcg/0.8 mL).
- Vials (300 mcg/mL or 600 mcg/mL).
Doses range from 5 mcg/kg to 10 mcg/kg daily, adjusted by weight and condition.[1][2]

Who makes Neupogen?

Amgen manufactures it. Biosimilars like Zarxio (Sandoz) and Nivestym (Pfizer) offer similar injectable forms at lower cost.[1][3]

Any oral or other non-injection options?

No oral version exists; all filgrastim products are injectable. A longer-acting pegfilgrastim version (Neulasta) is also injected but weekly.[1]

[1]: Neupogen Prescribing Information (Amgen)
[2]: FDA Label for Filgrastim
[3]: DrugPatentWatch.com - Neupogen Patents and Biosimilars