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ATC N06AX02 · Other Antidepressants

Tryptophan shortage

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

Countries1/16
Products1packs or presentations
Companies11 listed
Short since7 Aug 20242.2 years ago
Earliest returnnot givencompany estimate
Main reasonManufacturing problem
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 shortageAustraliaNo reported shortage

Timeline

Canada
202520262027TEVA-TRYPTOPHAN (100)TEVA-TRYPTOPHAN (100)today

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
Teva1 TEVA

Listed: Teva TEVA · NYSE / TASE

Compared with similar medicines

ATC group N06AX · Other Antidepressants
Duloxetine12/16Mirtazapine10/16Venlafaxine10/16Bupropion7/16Reboxetine3/16Trazodone3/16Agomelatine1/16Desvenlafaxine1/16Mianserin1/16Oxitriptan1/16Tryptophan1/16Vortioxetine1/16

Affected products

CountryProductCompanySinceExpected backReason
CATEVA-TRYPTOPHAN (100)TEVA CANADA LIMITED7 Aug 2024not givenManufacturing problem
Disruption of the manufacture of the drug

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