Ambrosia's reusable injector pen is designed for comfortable, precise subcutaneous dosing. Once set up, the same pen carries you through every cycle — only the cartridge changes. Here is how to prepare, prime and inject with confidence.
Setting up a new cartridge
- Remove the pen cap.
- Unscrew the cartridge casing.
- Screw a fresh needle onto the casing.
- Insert a cartridge into the casing, pressing gently until it seats at the bottom.
- Screw the casing (with cartridge) back onto the pen until snug.
- Dial the setting knob to 60 units.
- Remove the needle's protective covers.
- With the needle pointing upwards, press the plunger fully.
- Repeat until a droplet appears at the needle tip — this purges trapped air.
- Your pen is now primed and ready for dosing.
How to inject
- Remove the pen cap, then the needle cap.
- Dial in the dose recommended for your product.
- Insert the needle straight in (at a 90° angle, not tilted) into a fatty fold of skin — the abdomen is the most common site.
- Press the plunger and hold for 5 seconds.
- Withdraw the pen.
- Replace the needle cap, then the pen cap.
Good-practice tips
- Rotate sites between injections to avoid irritation and lipohypertrophy.
- Store cold — keep the pen refrigerated between 2–8 °C. Never freeze.
- Dispose safely — place used needles in a sharps container; never in household bins.
- Single-use needles — fit a new needle for every injection.
- If you feel resistance or pain, stop and contact our clinical team.
A few things to avoid
- Reusing a needle (it dulls and increases discomfort).
- Injecting through clothing or into bruised, swollen or irritated skin.
- Skipping the priming step — air in the cartridge affects dose accuracy.
Every Ambrosia prescription comes with clinician oversight. If anything feels unclear once your pen arrives, message our support team and a nurse or prescriber will walk you through it.