Drug facts
MoleculeAtenolol (Tenormin)
Generics already compete: 9 makers on the market. 27 A-rated products from 9 makers substitute at the counter.
Tenormin was first approved by the FDA before 1982 under NDA 018240; the application holder is Twi Pharmaceuticals Inc.
The latest NADAC for ATENOLOL 50 MG TABLET is $0.02 per unit (as of 10/28/2026).
Holder Twi Pharmaceuticals IncApplication NDA 018240Approved 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 Tenormin patent listed in the Orange Book Orange Book
02Competition
- Generics
- 9 generic makers Orange Book
- First generic approved
- 07/15/1988 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 Atenolol profile.See what is included
03Supply and price
- FDA drug shortage
- ClearNot on the current shortage list FDA shortages
- NADAC
- $0.02 per unitATENOLOL 50 MG TABLET, mid-priced of 3 strengths, as of 10/28/2026 CMS NADAC
- Latest recall
- 09/29/2022Class I, Atenolol Tablets, Golden State Medical Supply Inc. FDA enforcement
04Product
- Application holder
- Twi Pharmaceuticals Inc Orange Book
- Application
- NDA 018240 Orange Book
- First approved
- before 1982 Orange Book
- Dosage forms
- tablet
- 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.