Sold as Gantrisin. Every FDA application for this active ingredient: 1 branded and 18 generic.
As of Nov 15, 2026, FDA lists 19 applications for Sulfisoxazole (sold as Gantrisin), first approved Jul 29, 1948, with 0 new uses approved and 0 published complete response letters.
| Jul 29, 1948 | GantrisinNDA 6525 | Roche | 5 | Discontinued |
| Jun 7, 1971 | SoxazoleANDA 80366 | Alra | 0 | Discontinued |
| Jun 15, 1972 | SulsoxinANDA 80040 | Solvay | 0 | Discontinued |
| Feb 9, 1973 | SosolANDA 80036 | Mk Labs | 0 | Discontinued |
| Feb 13, 1973 | SulfisoxazoleANDA 80379 | Hikma | 3 | Discontinued |
| Mar 6, 1974 | SulfisoxazoleANDA 80142 | Ani Pharms | 14 | Discontinued |
| Feb 13, 1975 | SulfisoxazoleANDA 84031 | Barr | 1 | Discontinued |
| Jan 5, 1977 | SulfalarANDA 84955 | Parke Davis | 0 | Discontinued |
| Jun 13, 1977 | SulfisoxazoleANDA 85628 | Rising | 17 | Discontinued |
| Mar 6, 1978 | SulfisoxazoleANDA 80085 | Lannett | 0 | Discontinued |
| Nov 5, 1980 | SulfisoxazoleANDA 84385 | Pharmeral | 1 | Discontinued |
| — | SulfisoxazoleANDA 80082 | Roxane | 0 | Discontinued |
| — | SulfisoxazoleANDA 80087 | Purepac Pharm | 0 | Discontinued |
| — | SulfisoxazoleANDA 80109 | Impax Labs | 0 | Discontinued |
| — | SulfisoxazoleANDA 80189 | Heather | 0 | Discontinued |
| — | SulfisoxazoleANDA 80268 | Valeant Pharm Intl | 0 | Discontinued |
| — | SulfisoxazoleANDA 85534 | Watson Labs | 0 | Discontinued |
| — | SulfisoxazoleANDA 87332 | Vitarine | 1 | Discontinued |
| — | SulfisoxazoleANDA 87649 | Lederle | 0 | Discontinued |
Applications, approvals and products come from FDA's Drugs@FDA data files, refreshed weekly, grouped by active ingredient as FDA spells it. Complete response letters are FDA's published letters. Medicare spending is CMS's Part D and Part B dashboard, matched to this ingredient by generic name; shortages are FDA's shortage list, matched by application number; clinical trials are ClinicalTrials.gov studies naming the ingredient as an intervention, refreshed daily; safety programs are FDA's REMS list, matched by application number or, for shared programs, by ingredient. Drugs@FDA