ETHINYL ESTRADIOL; LEVONORGESTREL
| Brand name | TWIRLA |
|---|---|
| Active ingredient | ETHINYL ESTRADIOL; LEVONORGESTREL |
| Strength | 0.03MG/24HR;0.12MG/24HR |
| Dosage form | SYSTEM |
| Route | TRANSDERMAL |
| Modality | Small molecule |
| FDA approval | February 2020 |
| Marketing status | RX |
| Patent | Expires | Type |
|---|---|---|
| 8246978 | August 2028 | product |
| 8747888 | July 2028 | product |
| 9050348 | July 2028 | product |
Source: FDA Orange Book, layered on the CliffBio company graph. Cliff dates are the latest FDA-listed patent expiry; estimates are projections, not legal advice.