How to Use Your Retatrutide Injection Pen
Using your Retatrutide pen correctly ensures safe and effective results. Follow these steps for proper administration:
1. Wash Your Hands
Clean your hands thoroughly with soap and water before handling the pen or needle.
2. Prepare the Pen
Remove the cap and inspect the solution. It should be clear and free from particles. Take a new needle and remove the protective seal.
3. Attach the Needle
Securely twist the needle onto the pen to ensure a proper seal.
4. Prime the Pen
Dial a small dose and press the injection button while holding the pen upright to remove air and prepare the flow.
5. Select Your Dose
Turn the dial to your prescribed dose and confirm it in the display window.
6. Choose an Injection Site
Inject into the abdomen (at least 2 inches from the navel), thigh, or upper arm. Rotate sites regularly to avoid irritation.
7. Inject the Dose
Insert the needle at a 90° angle, press the button fully, and hold for 5–10 seconds. Remove the needle and dispose of it safely in a sharps container.
Recommended Dosing Guide
Start low and increase gradually to allow your body to adjust:
- Weeks 1–4: 2.5mg once weekly
- Weeks 5–8: 5mg once weekly
- Weeks 9–12: 7.5mg once weekly
- Week 13+: 10mg once weekly
Adjust only when appetite suppression begins to decrease. Stay on lower doses longer if effective.
Dial Guide:
- 30 clicks = 2.5mg
- 60 clicks = 5mg
Inject once weekly on the same day for consistency.
Storage Guidelines
Before First Use:
- Store refrigerated at 2–8°C
- Keep in original packaging
- Do not freeze
After First Use:
- Can be kept at room temperature briefly, but refrigeration is recommended
- Keep away from heat, sunlight, and moisture
- Always recap after use
- Never store with a needle attached
Tips for Best Results
Using the Pen
- Always prime before first use
- Use a new needle for each injection
- Inject slowly and hold for full delivery
- Rotate injection sites weekly
- Do not rub the injection area
Dosing Smartly
- Begin at 2.5mg and increase gradually
- Stay on effective doses longer
- Track your weekly dosing
Handling & Safety
- Store unused pens in the fridge
- Remove needles after each use
- Never reuse needles
- Dispose of needles in a sharps container
Important Notice
This product is intended for research and development purposes only and is not for human consumption.
For support or to report issues, contact: customerservice@retapharma.co.uk




