allopurinol · Watson Labs · NDA 018241, 018785, 018832, 018877
Allopurinol
Earliest generic entry, as listed · earliest of 6 marketed strengths
Open now
No marketed reference-listed strength; date taken from all listed strengths.
No unexpired patents or exclusivities are listed for this product.
Listed patents · 0 unexpired
No unexpired patents listed.
Exclusivities · 0 unexpired
No unexpired exclusivities listed.
Paragraph IV certifications · 0
No Paragraph IV certification listed by FDA for this drug.
The list shows that a generic applicant certified to FDA that a listed patent is invalid or not infringed. It does not show litigation, settlements or launch timing.
Event history
No events yet. The first ingestion only records products entering their 12-month window; changes appear from the next Orange Book update.
Products covered · 6
| NDA · product | Form | Strength | Listed expiry |
|---|---|---|---|
| 018241 · 001 · discontinued | tablet, oral | 100MG | open |
| 018241 · 002 · discontinued | tablet, oral | 300MG | open |
| 018785 · 001 · discontinued | tablet, oral | 100MG | open |
| 018785 · 002 · discontinued | tablet, oral | 300MG | open |
| 018832 · 002 | tablet, oral | 100MG | open |
| 018877 · 001 | tablet, oral | 300MG | open |