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Hydrochlorothiazide starts at $5/mo, while Chlorthalidone starts at $8/mo in Canada. Hydrochlorothiazide contains HCTZ 25mg, while Chlorthalidone contains chlorthalidone. Last updated: 2026-02-26.

Head-to-Head Comparison

Hydrochlorothiazide Chlorthalidone
Price Range $5–$16/mo $8–$20/mo
Cheapest Pharmacy Costco ($3.50/mo) Costco ($5.00/mo)
Generic Name HCTZ 25mg chlorthalidone
Route Oral tablet Oral tablet
Category Cardiovascular Cardiovascular
ODB Coverage General Benefit General Benefit

Pharmacy Price Breakdown

Pharmacy Hydrochlorothiazide Chlorthalidone
Costco $3.50/mo $5.00/mo
Walmart $7.50/mo $10.00/mo
Rexall $9.80/mo $12.50/mo
Shoppers Drug Mart $11.50/mo $14.50/mo

Frequently Asked Questions

Which is cheaper, Hydrochlorothiazide or Chlorthalidone?
Hydrochlorothiazide is generally cheaper, starting at $5.00/mo compared to $8.00/mo for Chlorthalidone. The lowest price is at Costco ($3.50/mo).
What is the difference between Hydrochlorothiazide and Chlorthalidone?
Hydrochlorothiazide (HCTZ 25mg) and Chlorthalidone (chlorthalidone) are different medications in the cardiovascular category.
Is Hydrochlorothiazide or Chlorthalidone covered by provincial drug plans?
Hydrochlorothiazide: General Benefit on the Ontario Drug Benefit formulary. Chlorthalidone: General Benefit on the Ontario Drug Benefit formulary.

Last updated: 2026-02-26

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