Retatrutide vs Tirzepatide
Retatrutide and Tirzepatide are both stocked here and are often considered together. This page sets out what differs between them: their class, the sizes and price per milligram, the shape of the published evidence behind each, and where each stands under Canadian law. It does not rank them, because which is appropriate depends on what is being studied.
Side by side
| Retatrutide | Tirzepatide | |
|---|---|---|
| Class | GIP, GLP-1 and glucagon receptor agonist | GIP and GLP-1 receptor agonist |
| Sizes and price | 10 mg · 20 mg · 30 mg — from $87.00 (best $6.60/mg) | 20 mg · 40 mg — from $77.50 (best $2.17/mg) |
| Published evidence | 6 cited studies; 6 controlled trials in people. | 8 cited studies; 8 controlled trials in people. |
| Models studied | human | human |
| Status in Canada | No Drug Identification Number; named in a Health Canada advisory | Ingredient is in an authorized Canadian medicine (a different product) |
| Formats | vial, pen, starter, kit, value | vial, starter |
Key differences
Retatrutide 6 cited studies; 6 controlled trials in people. Tirzepatide 8 cited studies; 8 controlled trials in people.
No published study has compared Retatrutide and Tirzepatide directly. Everything above is drawn from separate studies of each compound, so the two columns are not results from one experiment.
Both are supplied for in-vitro laboratory research only and neither is for human or veterinary use.
FAQ
What is the difference between Retatrutide and Tirzepatide?
Retatrutide is gip, glp-1 and glucagon receptor agonist; Tirzepatide is gip and glp-1 receptor agonist. The table above sets out the sizes, the price per milligram, the evidence behind each and their Canadian status.
Which has more published research, Retatrutide or Tirzepatide?
Retatrutide has 6 cited studies on its page and Tirzepatide has 8. Study count is not quality: the model each one used matters more, and both pages list that for every paper.
Are Retatrutide and Tirzepatide authorized in Canada?
No Drug Identification Number; named in a Health Canada advisory for Retatrutide. Ingredient is in an authorized Canadian medicine (a different product) for Tirzepatide. Health Canada authorizes a drug by issuing an eight-digit Drug Identification Number, and most research peptides have none.
Can Retatrutide and Tirzepatide be used together?
No published study has tested them in combination, so there is no evidence about what a pairing does. We supply both for laboratory research and make no claim about using them together.