RETATRUTIDE 15 MG · PEN

SKU

retatrutide-15mg-pen

Domain

Metabolic

Weight

60 g

The 15 mg pen: dial-a-dose delivery

Every other retatrutide SKU is a vial: reconstitute, draw up with a syringe, read the units, inject, repeat. This one is a reloadable 3 mL pen device — load a cartridge, prime it, dial the amount, deliver. It's the format difference most Canadian suppliers don't offer, and it's the reason this SKU exists alongside the 10 mg, 20 mg, and 30 mg vials.

For the compound itself — receptor pharmacology, research background, comparisons — see the retatrutide hub.

What's in this SKU

Why a pen instead of a vial

The pen removes the step where most handling errors happen. Drawing up from a vial means reading a small volume off a syringe barrel — at these amounts, often 20 to 40 units of a 100-unit scale, with a fractional-unit slip sitting one squint away. A pen replaces that with a mechanical dial and an audible click per increment.

It also removes repeated stopper punctures and the fumbling that goes with vial-and-syringe work in general. The trade-off is flexibility: a vial lets you set any concentration you like at reconstitution, while the pen's cartridge fixes the scale you dial against. If your protocol is stable, that's a feature. If you're still titrating in fine steps, the 10 mg vial's 0.05 mg-per-unit resolution is the more precise instrument.

Concentration and dialling

Loaded into the 3 mL cartridge, a 15 mg payload gives:

15 mg ÷ 3 mL = 5 mg/mL

That is the same working concentration as the 10 mg vial reconstituted with 2 mL, so if you're moving across from that vial the numbers you already know carry over unchanged:

Verify against your own device's scale and the dosage calculator — pen graduations vary by device, and the dial reads in units, not milligrams.

How many doses is a 15 mg pen?

A 15 mg payload gives roughly:

• 7 aliquots at 2 mg
• 5 aliquots at 3 mg
• ~3 aliquots at 4 mg

The loaded cartridge keeps about 30 days refrigerated, the same window as a reconstituted vial. At a weekly cadence, 15 mg is well matched to it at the mid amounts — enough to run the month out without stranding material, which is exactly the gap between the 10 mg and 20 mg vials that this payload is sized for.

Storage and handling

Store the loaded pen refrigerated at 2–8 °C and use within about 30 days of loading. Don't freeze it, keep it out of light, and discard the cartridge if the solution turns cloudy or shows particulate. Prime the pen before the first delivery of a new cartridge so the dialled amount is the delivered amount. Detail on cold chain is in the storage guide, and the reconstitution walkthrough covers cartridge preparation.

Regulatory status: investigational everywhere

Retatrutide is an investigational compound with no marketing approval from Health Canada, the FDA, or any other regulator anywhere. It remains in clinical development, has never been authorised for human use, and there is no approved version of it and no prescription route to it.

The pen is a delivery device and changes none of that. This SKU is supplied for laboratory research use only and ships within Canada only.

Retatrutide and anti-doping

WADA's S0 (non-approved substances) category covers any pharmacological substance with no current approval from any governmental health authority for human therapeutic use, explicitly including drugs under clinical development. Retatrutide has no such approval.

By that definition it falls inside S0, which is prohibited at all times, in and out of competition. Tested athletes should treat retatrutide as off-limits and confirm against the WADA Prohibited List directly.

Frequently asked questions

How does a reloadable retatrutide pen work? Load a cartridge into the 3 mL pen, prime it so the dialled amount matches the delivered amount, then dial the amount and deliver. It replaces vial-and-syringe draw-up with a mechanical dial that clicks per increment — no reading a small volume off a syringe barrel.

How many doses are in a 15 mg retatrutide pen? A 15 mg payload gives roughly 7 aliquots at 2 mg, 5 at 3 mg, or 3 at 4 mg. The loaded cartridge keeps about 30 days refrigerated, so at a weekly cadence the mid amounts empty it inside its window without stranding material.

Is the retatrutide pen better than a vial? It depends on what you value. The pen removes the draw-up step where most handling errors occur and is faster in routine use. A vial lets you choose your own concentration at reconstitution and, at 5 mg/mL, resolves to 0.05 mg per syringe unit — finer than dialling. Stable protocols favour the pen; fine titration favours the vial.

Is retatrutide approved anywhere? No. Retatrutide is investigational and holds no marketing approval from Health Canada, the FDA, or any other regulator. It remains in clinical development and is supplied here for laboratory research use only. The pen is a delivery device and does not change that.

Is retatrutide banned in sport? Yes, in effect. WADA's S0 category covers substances with no approval from any health authority for human use, including drugs in clinical development — which describes retatrutide. S0 substances are prohibited at all times, in and out of competition.

Do you ship the retatrutide pen across Canada? Yes — Canada-wide, priced in CAD, with a flat $25 shipping rate. We do not ship to the United States or internationally.