Drug facts
MoleculeClonazepam (Klonopin)
Generics already compete: 11 makers on the market. 44 A-rated products from 11 makers substitute at the counter.
Klonopin was first approved by the FDA before 1982 under NDA 017533; the application holder is Cheplapharm Arzneimittel GMBH.
Clonazepam Tablet is on the current FDA drug shortage list, first posted 03/10/2023.
Holder Cheplapharm Arzneimittel GMBHApplication NDA 017533Approved before 1982
01Patents and exclusivity
When competition can legally begin. A generic can launch once both exclusivity and the last listed patent expire, unless a court or settlement says otherwise.
- Latest patent
- No Klonopin patent listed in the Orange Book Orange Book
02Competition
- Generics
- 11 generic makers Orange Book
- First generic approved
- 09/10/1996 Orange Book
Every listingEach listing and maker behind the generics count.
Price erosionHow NADAC moves as generics enter.
PrescribersWho prescribes it, from Medicare data.
Available in the full Clonazepam profile.See what is included
03Supply and price
- FDA drug shortage
- ActiveClonazepam Tablet is on the current shortage listsince 03/10/2023, available FDA shortages
- NADAC
- $0.04 per unitCLONAZEPAM 2 MG TABLET, mid-priced of 6 strengths, as of 10/28/2026 CMS NADAC
- Latest recall
- 11/18/2024Class I, Clonazepam, Endo USA, Inc. FDA enforcement
04Product
- Application holder
- Cheplapharm Arzneimittel GMBH Orange Book
- Application
- NDA 017533 Orange Book
- First approved
- before 1982 Orange Book
- Dosage forms
- tablet; tablet, orally disintegrating
- Routes
- oral
Sources: FDA Orange Book, FDA Purple Book, FDA drug shortages, FDA enforcement reports and CMS NADAC, read through QOPE. Not medical or legal advice.