Sold as Cyclapen-W. Every FDA application for this active ingredient: 2 branded and 1 generic.
As of Nov 13, 2026, FDA lists 3 applications for Cyclacillin (sold as Cyclapen-W), first approved Sep 13, 1979, with 0 new uses approved and 0 published complete response letters.
| Approved | Application | Sponsor | Supplements | Marketing |
|---|---|---|---|---|
| Sep 13, 1979 | Cyclapen-WNDA 50509 · New dosage form | Wyeth Ayerst | 11 | Discontinued |
| Sep 14, 1979 | Cyclapen-WNDA 50508 · New molecular entity | Wyeth Ayerst | 15 | Discontinued |
| May 4, 1988 | CyclacillinANDA 62895 | Chartwell Rx | 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. Drugs@FDA
