| 16571-883 | Allopurinol | allopurinol | Rising Pharma Holdings, Inc. | NDA AUTHORIZED GENERIC | Current |
| 16571-884 | Allopurinol | allopurinol | Rising Pharma Holdings, Inc. | NDA AUTHORIZED GENERIC | Current |
| 16571-885 | Allopurinol | allopurinol | Rising Pharma Holdings, Inc. | NDA AUTHORIZED GENERIC | Current |
| 65483-991 | ZYLOPRIM | allopurinol | Prometheus Laboratories Inc. | NDA | Current |
| 65483-993 | ZYLOPRIM | allopurinol | Prometheus Laboratories Inc. | NDA | Current |
| 70199-015 | Zyloprim | allopurinol | Casper Pharma LLC | NDA | Current |
| 70199-016 | Zyloprim | allopurinol | Casper Pharma LLC | NDA | Current |
| 70199-031 | Zyloprim | allopurinol | Casper Pharma LLC | NDA | Current |
| 70199-031 | Zyloprim | allopurinol | Casper Pharma LLC | NDA | Current |
| 70199-032 | Zyloprim | allopurinol | Casper Pharma LLC | NDA | Current |
| 70199-032 | Zyloprim | allopurinol | Casper Pharma LLC | NDA | Current |
| 70199-033 | Zyloprim | allopurinol | Casper Pharma LLC | NDA | Current |
| 70199-033 | Zyloprim | allopurinol | Casper Pharma LLC | NDA | Current |
| 70518-0551 | ZYLOPRIM | allopurinol | REMEDYREPACK INC. | NDA | Current |
| 70518-0551 | ZYLOPRIM | allopurinol | REMEDYREPACK INC. | NDA | Current |