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ATC N04AA01 · Tertiary Amines · updated 2 Nov 2026

Trihexyphenidyl shortage

As of 2 Nov 2026, Trihexyphenidyl has a reported shortage in 2 of the 16 countries we track (Canada, Australia), covering 3 products from 1 company.

Is there a Trihexyphenidyl shortage?

Yes. As of 2 Nov 2026, Trihexyphenidyl is reported short in 2 of the 16 countries we track: Canada, Australia. The earliest expected return is 6 Nov 2026 (Canada). New since 3 Oct 2026: Canada.

Countries2/16
Products3packs or presentations
Companies10 listed
Short since25 Jun 20264 months ago
Earliest return6 Nov 2026company estimate
Main reasonNot stated
United StatesNo reported shortageCanada1 product shortGermanyNo reported shortageFranceNo reported shortageItalyNo reported shortageSpainNo reported shortageIrelandNo reported shortageAustriaNo reported shortageBelgiumNo reported shortageSwitzerlandNo reported shortageCzechiaNo reported shortageNorwayNo reported shortageSwedenNo reported shortageJapanNo reported shortageNew ZealandNo reported shortageAustralia2 products short

Timeline

CanadaAustralia
2027TRIHEXYPHENIDYL (100 BTL)TRIHEXYPHENIDYL (100 BTL)ARTANE 2 mg trihexyphenidyl hydrochloride 2 ARTANE 2 mg trihexyphenidyl hydrochloride 2 mg tablet bottleARTANE 5 mg trihexyphenidyl hydrochloride 5 ARTANE 5 mg trihexyphenidyl hydrochloride 5 mg tablet bottletoday

Solid bars run from the reported start to today; faded bars show the time left until the expected return. An arrow means no return date was given.

Which companies are short

products short, all countries
AA Pharma1

Compared with similar medicines

ATC group N04AA · Tertiary Amines
Trihexyphenidyl2/16Biperiden1/16Profenamine1/16Tropatepine1/16

Affected products

CountryProductCompanySinceExpected backReason
CATRIHEXYPHENIDYL (100 BTL)AA PHARMA INC6 Oct 20266 Nov 2026Manufacturing problem
Disruption of the manufacture of the drug
AUARTANE 2 mg trihexyphenidyl hydrochloride 2 mg tablet bottle25 Jun 202618 Dec 2026Not stated
AUARTANE 5 mg trihexyphenidyl hydrochloride 5 mg tablet bottle24 Sep 202622 Jan 2027Not stated

"Expected back" is the date the company gave the authority, when it gave one. Ask a pharmacist about alternatives.

Questions

Is there a Trihexyphenidyl shortage?

Yes. As of 2 Nov 2026, Trihexyphenidyl is reported short in 2 of the 16 countries we track: Canada, Australia. The earliest expected return is 6 Nov 2026 (Canada). New since 3 Oct 2026: Canada.

When will Trihexyphenidyl be back in stock?

Companies expect supply back from 6 Nov 2026 in Canada; Canada: 6 Nov 2026; Australia: 18 Dec 2026. These are company estimates reported to each authority.

Why is Trihexyphenidyl in short supply?

The most common reason reported is: not stated. Reasons by product are listed in the table below.

Which companies have Trihexyphenidyl shortages?

AA Pharma.