Preloaded

The calculator

Already set to a Tirzepatide vial. Change the strength and the mass follows. Enter any two of the three numbers and it returns the third.

Add this much bacteriostatic water 2 mL 10 mg in 2 mL gives 5 mg per mL
mg / mL5
mcg / mL5,000
mcg / 0.1 mL500
mcg / 0.01 mL50

This is arithmetic, not a dosing recommendation. It converts mass and volume into concentration and back. It says nothing about what to do with the result. Boreal Peptides publishes no dosing, no protocols and no administration guidance, here or anywhere else on this site.

Our vials

Ten strengths, and why that matters here

5 mg, 10 mg, 15 mg, 20 mg, 30 mg, 40 mg, 50 mg, 60 mg, 100 mg and 120 mg.

That is the widest range in our catalogue, and it is the reason a generic calculator is a poor fit for this compound. The largest vial is twenty-four times the smallest. Reconstitute a 120 mg vial with the volume you would use for a 5 mg one and you are twenty-four times out.

The dropdown above carries all ten, read from the live catalogue rather than typed from a template.

The product page is Tirzepatide.

Not tested

This one is not tested, and we are not going to imply otherwise

Tirzepatide is one of the fourteen products on this site with no third-party certificate.

Seventeen of our thirty-one products carry one, naming the testing laboratory and the batch. Tirzepatide does not. Its product page says “not tested” in those words, and so does this one.

We do not fill that gap with a manufacturer’s own purity claim, a batch number with no report behind it, or a “lab tested” badge. A blank is more honest than a borrowed number.

The fourteen untested products are with the laboratory. As each result comes back the product page gets the figure, the laboratory and the batch, and until then it keeps saying not tested.

Regulatory

An authorised tirzepatide exists in Canada. This is not it.

This is the important difference between this compound and most of what we sell, and it cuts against us, so you should have it plainly.

Health Canada has authorised tirzepatide as a prescription medicine. It is sold as Mounjaro, approved in 2023, and as Zepbound, both carrying Drug Identification Numbers, both prescribed by a physician and dispensed by a licensed pharmacy.

What we sell is not that. It has no DIN, it has not been reviewed by Health Canada for safety, efficacy or quality, and it is supplied for laboratory research use only.

If what you actually want is tirzepatide as a medicine, the authorised route exists and it is a doctor and a pharmacy. We are not a substitute for it and we are not going to pretend to be.

Two things worth noting alongside that. Tirzepatide is not among the fourteen compounds named in Health Canada’s 9 April 2026 advisory.1 That advisory nonetheless states that peptides are generally regulated as prescription drugs in Canada, and that “for research use only” labelling does not make a product legal or exempt it from regulatory requirements. Our full position is on the research use disclaimer.

The line

Why there is no dose box

Every tirzepatide calculator online asks what dose you want and returns units on an insulin syringe. Ours does not.

Boreal Peptides publishes no dosing, no protocols, no titration schedules and no administration guidance, for any compound, at any strength. Tirzepatide has an authorised form with an approved dosing schedule set by a regulator and prescribed by a physician. That schedule belongs to that product, not to this one, and copying it across would be exactly the implication we refuse to make.

A worked example

Working it through

Our 10 mg vial worked to 5 mg per mL:

10 mg divided by 5 mg per mL = 2 mL of bacteriostatic water.

The 120 mg vial at the same 2 mL:

120 mg divided by 2 mL = 60 mg per mL, twelve times the concentration of the first example from the same volume of water.

That gap is the whole argument for using a calculator on this compound rather than a habit.

What you need

The diluent

The calculator assumes bacteriostatic water, sold in 3 ml and 10 ml. The rest is on the reconstitution supplies page. We publish no reconstitution procedure.

Related

Other calculators

The general peptide calculator carries the whole catalogue and splits blends per component. There is also a Retatrutide calculator, and unlike this one, that compound does carry a third-party certificate.

Sources

  1. Health Canada. “Think twice before injecting peptides bought online: unauthorized products can seriously harm your health.” Advisory, 9 April 2026. https://recalls-rappels.canada.ca/en/alert-recall/think-twice-injecting-peptides-bought-online-unauthorized-products-can-seriously-harm