Retatrutide Vials — 10mg Lyophilized

Why our team picked vials as our flagship format

We stock both vials and pre-filled pens, but the vials are what we ship most — roughly 68% of our Canadian orders every month. There's a reason. Vials give you flexibility. Pens give you convenience. If you're running a custom protocol, adjusting your titration schedule week by week, splitting doses between GLP-1 peptides, or just researching at your own pace, vials are the format that doesn't lock you in.

Every vial we ship is 10 milligrams of lyophilized retatrutide, sealed under nitrogen atmosphere in Type-I amber borosilicate glass, capped with butyl rubber and aluminum. That's the same primary packaging pharmaceutical companies use for clinical-trial samples. It's boring, medical, and it works — the peptide stays stable for 24 months unopened when held between 2-8°C.

What's in the box when it arrives

Every vial order ships with everything you need to reconstitute and administer. No hunting down bac water at a compounding pharmacy in Etobicoke, no ordering syringes separately off Amazon.

• Your retatrutide vials (quantity per your bundle), sealed in original packaging with lot number and expiration date printed
• Bacteriostatic water 3ml per vial (0.9% benzyl alcohol, USP grade, from a Canadian compounding source)
• Sterile insulin syringes — 5 per vial, 31G × 5/16", 0.3ml capacity (BD Ultra-Fine, health-grade)
• Alcohol prep pads — one per anticipated injection
• Reconstitution card — printed on cardstock with the exact mg/ml ratios and syringe-unit conversions for common protocols
• Cold-chain packaging — insulated liner + 2 gel ice packs sized to your parcel

Vials versus pens — the honest comparison

If you already run peptide protocols and are comfortable with syringes, vials are objectively better value per milligram. If this is your first research protocol or you travel weekly, pens remove the learning curve entirely.

Reconstitution — the 5-minute walkthrough

Nothing scary, nothing complicated. If you can measure 2 millilitres and swab a rubber stopper with alcohol, you can reconstitute a vial. Full protocol video is available on request via WhatsApp.

Step 1 — Bring both vials to room temperature

Take the retatrutide vial and the bacteriostatic water out of the fridge and let them sit on your counter for 15-20 minutes. Cold peptide is more likely to fragment when you inject the bac water into the vial. This step is not optional.

Step 2 — Swab both stoppers

Alcohol pad on the rubber stopper of the bac water vial. Alcohol pad on the rubber stopper of the retatrutide vial. Let both air-dry for 10 seconds. Don't skip this even if the vials look clean.

Step 3 — Draw 2ml of bac water into a syringe

Use one of the insulin syringes provided. Draw exactly 2 millilitres of bac water. Air bubbles are fine — you'll clear them in the next step.

Step 4 — Slowly inject the bac water into the retatrutide vial

This is the most important step. Do not squirt the water directly into the lyophilized peptide cake. Instead, angle the syringe so the water runs down the inner glass wall of the vial. Slow injection = intact peptide. Fast injection into the cake = fragmented peptide.

Step 5 — Swirl gently, do not shake

Once the water is in, gently swirl the vial for 30-45 seconds. The lyophilized cake will dissolve. You should end up with a clear, slightly amber solution. If it's cloudy or has visible particles, don't use it — WhatsApp us and we'll ship a replacement.

Step 6 — Label and refrigerate

Write today's date on the vial label with a fine-tip marker. This is your Day 0 for the 28-day reconstituted shelf life. Store at 2-8°C between doses.

Why Canadian buyers keep coming back for vials

The pattern in our order database is pretty clear: buyers who start with a single Starter vial usually reorder within 6 weeks. Half of them upgrade to the Buy-3-Get-1-Free bundle on their second order. About 22% eventually switch to bulk 6-vial orders and never look back. Once you're comfortable with the reconstitution process, vials become the default — the per-dose economics simply beat every other format on the market.

The pens are still popular for two use cases: first-time buyers who want the clinical-trial format, and heavy travellers who don't want to carry syringes through airports. Everyone else — the bulk of our Canadian research community — orders vials.