Quick Answer for Canadian Researchers
If you want convenience and accuracy, choose the pen format. No preparation needed — just attach a needle and go. If you want the lowest cost per mg and maximum dosing flexibility, choose the vial format. Boreals Peptides stocks both.
What is a Peptide Pen?
A peptide pen is a pre-loaded injection device containing a precise dose of a research peptide — in this case, Retatrutide. The Boreals Peptides Retatrutide Synedica 40mg Pen comes pre-filled with 40mg of pharmaceutical-grade Retatrutide. The pen has a built-in dose dial and connects to standard pen needles. No reconstitution, no mixing, no separate syringes required.
The pen format was developed to make peptide research more accessible, more consistent and less prone to dosing errors. Canadian researchers who have switched from vials to pen format consistently report a better research experience.
What is a Peptide Vial?
A peptide vial contains lyophilized (freeze-dried) peptide powder that must be reconstituted with bacteriostatic water before use. The researcher draws the correct volume of bacteriostatic water into a syringe, injects it into the vial, and then draws the reconstituted solution for research use. This process requires additional supplies and preparation time.
🖊️ Pen Format — Full Advantages
✅ No Reconstitution
The peptide is already in injectable form. Simply attach a needle and the pen is ready. No mixing, no waiting.
✅ Pre-Measured Doses
Each click of the pen dial delivers a precise dose. Eliminates the calculation errors common with vial and syringe research.
✅ No Extra Supplies
No bacteriostatic water, no separate syringes, no alcohol swabs for mixing. Just a pen needle — available everywhere in Canada.
✅ Travel-Friendly
The pen is compact and discreet. Ideal for Canadian researchers who travel between provinces or internationally for conferences.
✅ Beginner-Friendly
New researchers find the pen format significantly less intimidating than reconstitution and vial-and-syringe protocols.
✅ Consistent Results
Pre-measured doses mean every research session starts with the same precise amount, improving research consistency.
When to Choose Vial Format
Vial format is preferred by experienced Canadian researchers who need maximum dosing flexibility, want the lowest cost per mg or are running protocols requiring custom concentrations. Boreals Peptides stocks Retatrutide in 10mg, 20mg and 40mg vials for researchers who prefer this format.
Retatrutide Pen vs Vial — Price Comparison (CAD)
How to Use the Retatrutide Pen
- Remove the pen cap and attach a fresh pen needle
- Dial the dose selector to the required amount
- Prime the pen with a small test dose to remove air bubbles
- Clean the injection site with an alcohol swab
- Insert the needle subcutaneously and inject
- Remove needle, replace pen cap and store in refrigerator
Research Use Only: All Boreals Peptides products are for research purposes only. Not for human use.