Can Norditropin Pens Be Reused?
No, Norditropin pens are single-patient, disposable devices designed for one-time use per cartridge or FlexPro pen. Once empty or expired, discard them according to local regulations—do not reuse, refill, or share.[1][2]
Why Can't You Reuse Them?
These pens use a prefilled, multi-dose cartridge with somatropin (human growth hormone) that maintains sterility and precise dosing through a built-in mechanism. Reusing risks bacterial contamination, inaccurate dosing from needle wear or residue, and reduced drug stability, potentially causing infections or ineffective treatment.[1][3]
How Do Norditropin Pens Work?
Norditropin FlexPro and NordiFlex pens are click-based injectors. Dial the dose, inject subcutaneously, and the pen advances automatically. Each pen holds 5mg/1.5mL, 10mg/1.5mL, 15mg/1.5mL, or 30mg/3mL strengths. They display remaining doses via a window but cannot be refilled—replace the entire pen when empty.[1][2]
What About the Needle—Can That Be Reused?
No. NovoFine or NovoTwist needles are single-use only. Reuse dulls the tip, increases pain, and raises infection risk. Always use a new needle for each injection, even on the same pen.[1][3]
How Long Does a Norditropin Pen Last Once Open?
After first puncture, use within 4 weeks (28 days) if stored at 36-46°F (2-8°C) unrefrigerated or refrigerated. Discard if discolored, particles appear, or past expiry. Track opening date on the label.[2]
Proper Disposal for Norditropin Pens
Place used pens and needles in a FDA-cleared sharps container. Do not throw in household trash. Local pharmacies or programs handle disposal—never recap needles by hand.[1][3]
Alternatives If Reusing Isn't an Option
- Other HGH brands: Genotropin (Pfizer) MiniQuick or pens; Humatrope (Lilly) vials/kwikpens; Omnitrope (Sandoz) pens—all single-patient use.
- Vials: Some providers offer multi-dose vials with separate syringes, but these require refrigeration and precise mixing; not interchangeable with pens.
- Switch via prescription if pens are inconvenient.[2]
[1]: Norditropin Prescribing Information (Novo Nordisk)
[2]: Novo Nordisk Norditropin Instructions for Use
[3]: FDA Growth Hormone Safety Guidelines