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Metformin starts at $8.00 per month, while Sitagliptin starts at $65.00 per month in Canada. Metformin contains metformin 500mg, while Sitagliptin contains sitagliptin (Januvia). Last updated: 2026-02-26.

Head-to-Head Comparison

Metformin Sitagliptin
Price Range $8–$24 per month $65–$103 per month
Cheapest Pharmacy Costco ($7.69 per month) Costco ($64.49 per month)
Generic Name metformin 500mg sitagliptin (Januvia)
Route Oral tablet Oral tablet
Category Diabetes Diabetes
ODB Coverage General Benefit Limited Use

Pharmacy Total Breakdown

Pharmacy Metformin Sitagliptin
Costco $7.69 per month $64.49 per month
Walmart $16.77 per month $84.97 per month
Rexall $21.49 per month $94.99 per month
Shoppers Drug Mart $23.19 per month $102.99 per month

Frequently Asked Questions

Which is cheaper, Metformin or Sitagliptin?
Metformin is generally cheaper, starting at $8.00 per month compared to $65.00 per month for Sitagliptin. The lowest price is at Costco ($7.69 per month).
What is the difference between Metformin and Sitagliptin?
Metformin (metformin 500mg) and Sitagliptin (sitagliptin (Januvia)) are different medications in the diabetes category.
Is Metformin or Sitagliptin covered by provincial drug plans?
Metformin: General Benefit on the Ontario Drug Benefit formulary. Sitagliptin: Limited Use on the Ontario Drug Benefit formulary.

Last updated: 2026-02-26

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