| 16714-576 | Allopurinol | Allopurinol | NorthStar RxLLC | ANDA | Current |
| 16714-577 | Allopurinol | Allopurinol | NorthStar RxLLC | ANDA | Current |
| 23155-693 | Allopurinol | Allopurinol | Heritage Pharmaceuticals Inc. d/b/a Avet Pharmaceuticals Inc. | ANDA | Current |
| 23155-693 | Allopurinol | Allopurinol | Heritage Pharmaceuticals Inc. d/b/a Avet Pharmaceuticals Inc. | ANDA | Current |
| 23155-693 | Allopurinol | Allopurinol | Heritage Pharmaceuticals Inc. d/b/a Avet Pharmaceuticals Inc. | ANDA | Current |
| 23155-694 | Allopurinol | Allopurinol | Heritage Pharmaceuticals Inc. d/b/a Avet Pharmaceuticals Inc. | ANDA | Current |
| 23155-694 | Allopurinol | Allopurinol | Heritage Pharmaceuticals Inc. d/b/a Avet Pharmaceuticals Inc. | ANDA | Current |
| 23155-694 | Allopurinol | Allopurinol | Heritage Pharmaceuticals Inc. d/b/a Avet Pharmaceuticals Inc. | ANDA | Current |
| 50742-135 | Allopurinol | Allopurinol | Ingenus Pharmaceuticals LLC | ANDA | Current |
| 50742-136 | Allopurinol | Allopurinol | Ingenus Pharmaceuticals LLC | ANDA | Current |
| 51655-945 | Allopurinol | Allopurinol | Northwind Pharmaceuticals | ANDA | Current |
| 69967-008 | Allopurinol | Allopurinol | Arise Pharamaceuticals LLC | ANDA | Current |
| 69967-009 | Allopurinol | Allopurinol | Arise Pharamaceuticals LLC | ANDA | Current |
| 70934-979 | Allopurinol | Allopurinol | Denton Pharma, Inc. DBA Northwind Pharmaceuticals | ANDA | Current |
| 70934-979 | Allopurinol | Allopurinol | Denton Pharma, Inc. DBA Northwind Pharmaceuticals | ANDA | Current |
| 71610-676 | Allopurinol | Allopurinol | Aphena Pharma Solutions - Tennessee, LLC | ANDA | Current |
| 71610-681 | Allopurinol | Allopurinol | Aphena Pharma Solutions - Tennessee, LLC | ANDA | Current |