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Why was thorazine discontinued?

See the DrugPatentWatch profile for thorazine

What happened to Thorazine (chlorpromazine), and when was it discontinued?

Thorazine (chlorpromazine) was widely used for decades, but it was ultimately taken off the market in many places because manufacturers stopped producing it for commercial reasons tied to demand and the availability of alternative antipsychotic drugs. In practice, “discontinued” usually means production/marketing ended rather than the drug becoming unsafe overnight.

Was Thorazine discontinued because of safety concerns?

No single, widely documented “safety incident” is typically cited as the reason Thorazine was discontinued. Chlorpromazine has long been associated with known risks common to older antipsychotics—like sedation, low blood pressure, movement disorders (extrapyramidal symptoms), and hormone-related effects—but those risks existed while the drug was still marketed. Discontinuation is more often driven by economics and treatment evolution than by a sudden new safety signal.

Did newer drugs replace Thorazine?

Yes. Over time, clinicians moved toward newer antipsychotics that generally offered different safety profiles, dosing convenience, and a better fit for modern treatment approaches. As those options became standard, the use of older agents like Thorazine fell, reducing the incentive for continued commercial supply.

Is Thorazine still available somewhere?

Availability varies by country and by formulation (brand vs. generic). “Discontinued” in one market does not necessarily mean the drug vanished everywhere; generics and older chlorpromazine products may still exist depending on local regulatory decisions and manufacturing continuity.

How can I confirm the exact reason in my country?

If you tell me your country (or whether you mean U.S., Canada, UK, etc.), I can help narrow down the specific discontinuation notice or manufacturer statement relevant to that market. The most reliable confirmation usually comes from the country’s drug regulator, the product’s labeling history, or manufacturer discontinuation communications.



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