Buy Retatrutide Peptide in Canada – GLP-1/GIP/Glucagon Triple Agonist
Great Northern Peptides supplies retatrutide peptide in Canada for laboratory research in four product options: a 10mg vial, 20mg vial, two 20mg vials (40mg total), or a 40mg vial.
Researchers looking to buy retatrutide in Canada can select the required quantity from the product selector above. Each option contains retatrutide tested to 99%+ purity by HPLC, and the applicable batch certificate of analysis is provided on the product page.
The product is supplied for research and laboratory purposes only and is not intended for human or veterinary use.
What Is Retatrutide Peptide?
Retatrutide (LY3437943) is an investigational synthetic peptide being studied for its activity at three hormone receptors: GLP-1, GIP and glucagon. Because it acts across all three pathways, retatrutide is commonly described as a triple receptor agonist.
GLP-1 and GIP are involved in metabolic and appetite-related signaling, while glucagon has an important role in energy metabolism. Researchers are studying retatrutide to better understand how these pathways interact.
Retatrutide differs from semaglutide and tirzepatide in its receptor profile. Semaglutide primarily targets GLP-1, while tirzepatide targets GLP-1 and GIP. Retatrutide additionally targets the glucagon receptor.
Retatrutide remains an investigational compound. Products sold by Great Northern Peptides are intended for research and laboratory purposes only, not for human or veterinary use.
Retatrutide Research Areas
- Triple-receptor activity: Retatrutide provides researchers with a compound through which GLP-1, GIP and glucagon signaling can be studied.
- Metabolic signaling: Research is examining how these three pathways interact and influence metabolic processes.
- Appetite and food-intake research: GLP-1 and GIP signaling are relevant to research involving appetite and food-intake regulation.
- Glucose-regulation research: Retatrutide is being investigated in relation to glucose and metabolic regulation.
- Energy-metabolism research: Glucagon receptor activity provides an additional pathway for studying energy metabolism.
- Body-weight research: Clinical and laboratory research is investigating the relationship between retatrutide’s receptor activity and body weight.
Retatrutide Peptide Options & Prices
| Option | Contents | Price (CAD) | Price per mg |
| Retatrutide 10mg | 1 x 10mg vial | $90.00 | $9.00 |
| Retatrutide 20mg | 1 x 20mg vial | $150.00 | $7.50 |
| Retatrutide 20mg (2 vials) | 2 x 20mg vials, 40mg in total | $250.00 | $6.25 |
| Retatrutide 40mg | 1 x 40mg vial | $225.00 | $5.63 |
Which Retatrutide Option to Choose
All four options contain the same retatrutide at 99%+ purity, from batches tested by the same lab. The differences are the amount per vial, the number of vials and the price per mg:
- Retatrutide 10mg ($90): one 10mg vial. The smallest quantity.
- Retatrutide 20mg ($150): one 20mg vial, at $7.50 per mg.
- Retatrutide 20mg, 2 vials ($250): two separate 20mg vials, 40mg in total For research that needs the same total amount split across two vials.
- Retatrutide 40mg ($225): one 40mg vial.
Retatrutide 2 × 20mg vs 40mg
The 2 × 20mg retatrutide option contains two separate 20mg vials, for 40mg total. The 40mg option contains 40mg in a single vial.
The two configurations therefore provide the same total stated amount while differing in the number of vials and price.
Key Benefits of Retatrutide Peptide
- Triple-pathway fat loss: Activates GLP-1, GIP, and glucagon receptors simultaneously for multi-mechanism fat burning
- Superior appetite control: Reduces hunger signals and food cravings more effectively than single-agonist peptides
- Enhanced glucose regulation: Supports insulin sensitivity and healthy blood sugar balance
- Lean mass preservation: Promotes fat reduction while maintaining muscle tissue during caloric deficit
- Improved energy metabolism: Increases cellular energy production and caloric efficiency
- Long-lasting metabolic support: Sustains metabolic balance and energy stability throughout the day
Retatrutide, Tirzepatide and Semaglutide Compared
Retatrutide, tirzepatide and semaglutide are research-relevant compounds with different receptor activity profiles:
| Receptor | Retatrutide | Tirzepatide | Semaglutide |
| GLP-1 | Yes | Yes | Yes |
| GIP | Yes | Yes | No |
| Glucagon | Yes | No | No |
| Type | Triple agonist | Dual agonist | Single agonist |
We also supply Tirzepatide, Semaglutide and Cagrilintide for research.
Retatrutide Peptide Lab Testing & Certificate of Analysis
Every batch of retatrutide peptide is independently tested by Freedom Diagnostics Lab for purity using HPLC analysis.
A certificate of analysis (COA) is provided with each batch and is displayed in the second product image. To verify your specific batch, compare the batch number printed on your vial label with the batch number shown on the COA.
Retatrutide Peptide Product Information
- Compound: Retatrutide (LY3437943)
- Receptor activity: GLP-1 / GIP / glucagon
- Available options: 10mg, 20mg, 2 × 20mg, 40mg
- Purity: 99%+ by HPLC
- Form: Lyophilized powder
- Testing: Freedom Diagnostics Lab
- Shipping origin: Canada
- Use: Research and laboratory purposes only
For research and laboratory use only. Not evaluated by Health Canada for human use.
Why Choose Great Northern Peptides Canada
At Great Northern Peptides, we specialize in high-purity, lab-tested peptide formulations that meet the strictest Canadian standards. Every batch of Retatrutide is independently verified by third-party HPLC testing for composition, potency, and purity.
- Lab-verified purity: 99%+ on every batch, with certificates of analysis available
- Canadian sourced and shipped: All orders ship directly from within Canada
- Express nationwide delivery: Fast shipping coast to coast
- Secure packaging: Temperature-appropriate packaging to maintain product integrity
- Trusted by Canadians: A brand built on transparency, quality, and scientific integrity
Frequently Asked Questions
How does Retatrutide work?
What is the difference between Retatrutide and semaglutide?
Which Retatrutide dosage should I choose?
How should I store Retatrutide?
How is Retatrutide shipped?
What is the price of Retatrutide in Canada?
Where is the best place to buy Retatrutide online in Canada?
Which option is the best value?
Is retatrutide shipped from within Canada?
Where can I see the certificate of analysis?
Customer Reviews
★★★★★
“The product page answered the questions I had before ordering, and shipping updates were clear throughout the process.”
— Riley S., Edmonton, AB
★★★★★
“Well organized packaging and an easy checkout experience. The available batch information was especially helpful.”
— Avery N., Victoria, BC
★★★★★
“My order was processed quickly and customer service was helpful when I needed a small clarification.”
— Jamie K., Saskatoon, SK
