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Foscarbidopa; Foslevodopa

Sold as VYALEV · given by subcutaneous

Ten years or more until it comes off patent
13.8 yr
Until anyone may copy it
Protection runs to 2040-06-10
9
Trials running now
13 registered in total
Phase 3
Furthest stage reached
large trials measuring benefit
2
Organisations running trials
lead sponsors on record
01

Who owns it, and until when

Abbvie Inc
Approval holder
the only company permitted to sell it today
2040-06
Last patent expires
latest patent filed against this product
2027-10
FDA exclusivity ends
a separate protection granted at approval

Whichever date falls later is when other manufacturers may apply to sell copies. Price typically falls steeply within a year of that point, and with it any company's ability to recover the cost of new research on the molecule. That is when it becomes a candidate for the ledger on the first tab.

02

What it is being tested for

Parkinson's DiseaseParkinson's Disease (PD)Advanced Parkinson Disease
03

Who is paying for the research

AbbVie
Company
12
Britannia Pharmaceuticals Ltd.
Company
1

Who funds the trials matters after protection lapses. Company-funded work usually stops once exclusivity ends; university, hospital and government-funded work does not, and is the research most likely to continue on this molecule afterwards.

04

The trials themselves

NCT07313176No trials on record2026 · 215 people · recruiting now
Long Term Effectiveness of Levodopa-Entacapo

Expiry dates are what the patent holder has filed; litigation, paediatric extensions and settlements routinely move them, so read these as the earliest plausible date rather than a schedule. Not medical advice.

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