Atenolol Chlorthalidone (Tenoretic, Aa-Atenidone) shortage status
Partial shortage
Source: Health Canada shortage reports · Updated Jul 9, 2026
Some Atenolol Chlorthalidone products are in shortage in Canada (1 of 5 reported products), while others remain available. Your pharmacy may be able to substitute an unaffected manufacturer.
A combination of a beta blocker and a diuretic used to lower high blood pressure.
Products affected
1 / 5
In shortage since
Mar 24, 2026
Reports on file
12
Talk to a pharmacist
Pharmacists can substitute an unaffected manufacturer's version, adjust strengths, and in most provinces adapt or renew a prescription on the spot.
Independent services, not affiliated with rxstat; referral fees may apply. Free options exist depending on your province. In an emergency call 911; free health advice at 811.
Shortage history
Shortage history (red bands = periods in shortage).
Reports by product
The DIN is printed on your prescription label.
Active shortage
AA-ATENIDONE
50MG
25MG · TABLET · AA PHARMA INC
DIN 02248763 · since Mar 24, 2026, est. end Jun 12, 2026 · Disruption of the manufacture of the drug.
Discontinued
TENORETIC 50/25MG TAB
25MG
50MG · TABLET · ASTRAZENECA CANADA INC
DIN 02049961
Discontinued
TENORETIC 100/25MG TAB
25MG
100MG · TABLET · ASTRAZENECA CANADA INC
DIN 02049988
Resolved
TENORETIC 100/25MG TAB
25MG
100MG · TABLET · ASTRAZENECA CANADA INC
DIN 02049988 · ended Apr 9, 2020 · Company decision to discontinue product confirmed June 2020. See Discontinuation Posting.
Resolved
TENORETIC 50/25MG TAB
25MG
50MG · TABLET · ASTRAZENECA CANADA INC
DIN 02049961 · ended Apr 11, 2020 · Company decision to discontinue product confirmed June 2020. See Discontinuation Posting.
Discontinued
TEVA-ATENOLOL/CHLORTHALIDONE
25MG
100MG · TABLET · TEVA CANADA LIMITED
DIN 02302926
Resolved
TEVA-ATENOLOL/CHLORTHALIDONE
25MG
100MG · TABLET · TEVA CANADA LIMITED
DIN 02302926 · ended Sep 30, 2019 · Disruption of the manufacture of the drug.
Resolved
APO-ATENIDONE
25MG
50MG · TABLET · APOTEX INC
DIN 02248763 · ended Feb 19, 2019 · Disruption of the manufacture of the drug.
Resolved
APO-ATENIDONE
25MG
100MG · TABLET · APOTEX INC
DIN 02248764 · ended Jul 23, 2018 · Disruption of the manufacture of the drug.
Resolved
APO-ATENIDONE
25MG
50MG · TABLET · APOTEX INC
DIN 02248763 · ended Jul 23, 2018 · Disruption of the manufacture of the drug.
Discontinued
APO-ATENIDONE
25MG
50MG · TABLET · APOTEX INC
DIN 02248763
Discontinued
APO-ATENIDONE
25MG
100MG · TABLET · APOTEX INC
DIN 02248764
What's happening
Atenolol Chlorthalidone is currently affected by an active shortage report filed with Health Canada by AA PHARMA INC.
The reported cause is: disruption of the manufacture of the drug. Manufacturers must report shortages, but end-date estimates are their own projections and often move.
If your usual product is affected, a pharmacist is the fastest route to a solution: they can dispense an unaffected manufacturer's equivalent when one exists, and in most provinces can adapt doses or substitute a therapeutic alternative without a new appointment.
Atenolol Chlorthalidone is classified under “BETA BLOCKING AGENTS AND OTHER DIURETICS” (ATC C07CB).
Recent changes
No changes recorded yet.
Common questions
What is Atenolol Chlorthalidone used for?
A combination of a beta blocker and a diuretic used to lower high blood pressure.
When will Atenolol Chlorthalidone be back in stock in Canada?
Manufacturers have not provided a reliable end date. This page updates automatically as soon as an estimate is filed.
Why is Atenolol Chlorthalidone in shortage?
See the reports above; manufacturers must state a reason (most commonly manufacturing disruption or a surge in demand) when filing with Health Canada.
What can my pharmacist do about it?
Often quite a lot: substitute an equivalent product from an unaffected manufacturer, adjust quantities, or in most provinces adapt or renew prescriptions on the spot. Call your pharmacy before visiting, and call 811 for free health advice.
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Drugs in the same therapeutic class, best-supplied first. These are not automatic substitutes: only your pharmacist or prescriber can judge whether a switch makes sense for you.
Data reflects reports manufacturers are legally required to file with Health Canada, republished with per-drug aggregation by rxstat. Estimated end dates are supplied by manufacturers and frequently change. This page describes drug supply only and is not medical advice; never stop or switch a medication without speaking to your pharmacist or prescriber.