Answer
Otrivine Extra Dual Relief nasal spray has a shelf life of 3 years and, after first opening, can be used until the end of that shelf life.
Sources for this answer
- Otrivine Extra Dual Relief 0.5 mg/ml + 0.6 mg/ml nasal spray, solutionHaleon Dungarvan · emc · SmPC §6.3 Shelf life · Version 7Document updated
Sources checked