Thiazide diuretic
Hydrochlorothiazide in Canada: prescription, brands, pricing
This page summarises the situation of Hydrochlorothiazide in Canada under Health Canada: prescription status, available brands and generics, pharmacy dispensing, and online options in CAD. Hydrochlorothiazide belongs to the Thiazide diuretic class.
- Regulator
- Health Canada
- Currency
- CAD
About Hydrochlorothiazide
Hydrochlorothiazide is approved for hypertension (alone or in combination), oedema in heart failure, hepatic cirrhosis or nephrotic syndrome, and certain renal conditions. Canada classifies medications as Schedule I (prescription), II (pharmacist-only OTC), III (open OTC) or unscheduled, with provincial variation. Provincial drug plans cover prescription costs at varying rates.
Mechanism and action
Hydrochlorothiazide blocks the sodium-chloride symporter in the distal convoluted tubule of the kidney, reducing sodium reabsorption and producing modest diuresis.
Brands and generics in Canada
In Canada, Hydrochlorothiazide is typically dispensed as one internationally recognised brand along with their corresponding authorised generics. Canadian pharmacies (Shoppers Drug Mart, Rexall, London Drugs and many independents) are licensed provincially, and pharmacists in several provinces can prescribe for minor ailments. Brand-to-generic substitution is decided by the pharmacist under local Health Canada equivalence rules, and the price difference in CAD is usually substantial.
Online and tele-prescribing access
Online pharmacy is regulated provincially in Canada; cross-border imports are restricted. Tele-prescribing platforms have expanded prescription access since 2020. For Hydrochlorothiazide specifically, the legal online options in Canada depend on its Rx-or-OTC classification under Health Canada.
Frequently asked questions
Is Hydrochlorothiazide available in Canada? ▾
Yes — Hydrochlorothiazide and its brands are available in Canada through pharmacies authorised by Health Canada, in various strengths depending on the commercial product. Authorised generics offer a lower-cost alternative with the same active substance.
Do I need a prescription for Hydrochlorothiazide in Canada? ▾
Canada classifies medications as Schedule I (prescription), II (pharmacist-only OTC), III (open OTC) or unscheduled, with provincial variation. Provincial drug plans cover prescription costs at varying rates. The exact status of Hydrochlorothiazide (Rx or OTC) is determined by Health Canada; most active ingredients in the Thiazide diuretic class require prescription, although there are exceptions by country and formulation.
How much does Hydrochlorothiazide cost in Canada? ▾
The price in CAD depends on the manufacturer (brand vs authorised generic), the strength and the pack size. Generics are typically substantially cheaper than brands and serve as the economic reference for ongoing use.
Products with Hydrochlorothiazide in Canada
Hydrochlorothiazide in other countries
The information on this website is provided for reference and educational purposes only. It does not replace consultation with a qualified healthcare professional.