| 10544-545 | Allopurinol | Allopurinol | Blenheim Pharmacal, Inc. | ANDA | Current |
| 10544-547 | Allopurinol | Allopurinol | Blenheim Pharmacal, Inc. | ANDA | Current |
| 51655-038 | ALLOPURINOL | ALLOPURINOL | Northwind Pharmaceuticals, LLC | ANDA | Current |
| 53808-0929 | Allopurinol | Allopurinol | State of Florida DOH Central Pharmacy | ANDA | Current |
| 53808-1026 | Allopurinol | Allopurinol | State of Florida DOH Central Pharmacy | ANDA | Current |
| 63304-539 | Allopurinol | Allopurinol | Ranbaxy Pharmaceuticals Inc. | ANDA | Current |
| 63304-540 | Allopurinol | Allopurinol | Ranbaxy Pharmaceuticals Inc. | ANDA | Current |
| 68788-9331 | Allopurinol | Allopurinol | Preferred Pharmaceuticals, Inc. | ANDA | Current |
| 68788-9832 | Allopurinol | Allopurinol | Preferred Pharmaceuticals, Inc. | ANDA | Current |