Last Updated: September 28, 2026

BONTRIL Drug Patent Profile

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When do Bontril patents expire, and when can generic versions of Bontril launch?

Bontril is a drug marketed by Valeant and Bausch and is included in two NDAs.

The generic ingredient in BONTRIL is phendimetrazine tartrate. Twelve suppliers are listed for this compound. Additional details are available on the phendimetrazine tartrate profile page.

DrugPatentWatch^® Litigation and Generic Entry Outlook for Bontril

A generic version of BONTRIL was approved as phendimetrazine tartrate by CHARTWELL on October 30^th, 1991.

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Summary for BONTRIL

US Patents:	0
Applicants:	2
NDAs:	2

US Patents and Regulatory Information for BONTRIL

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Glossary

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Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	TE	Type	RLD	RS	Patent No.	Patent Expiration	Product	Substance	Delist Req.	Exclusivity Expiration
Valeant	BONTRIL	phendimetrazine tartrate	CAPSULE, EXTENDED RELEASE;ORAL	088021-001	Sep 21, 1982		DISCN	No	No	⤷ Start Trial	⤷ Start Trial				⤷ Start Trial
Bausch	BONTRIL PDM	phendimetrazine tartrate	TABLET;ORAL	085272-001	Approved Prior to Jan 1, 1982	AA	RX	Yes	Yes	⤷ Start Trial	⤷ Start Trial				⤷ Start Trial
>Applicant	>Tradename	>Generic Name	>Dosage	>NDA	>Approval Date	>TE	>Type	>RLD	>RS	>Patent No.	>Patent Expiration	>Product	>Substance	>Delist Req.	>Exclusivity Expiration

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Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. We do not provide individual investment advice. This service is not registered with any financial regulatory agency. The information we publish is educational only and based on our opinions plus our models. By using DrugPatentWatch you acknowledge that we do not provide personalized recommendations or advice. thinkBiotech performs no independent verification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.