Answer
Phenobarbital Colonis 50 mg/5 ml Oral Suspension has a shelf life of 3 years before first opening and must be used within 6 months after first opening.
Sources for this answer
- Phenobarbital Colonis 50 mg/5 ml Oral SuspensionColonis Pharma Ltd · emc · SmPC §6.3 Shelf life · Version 1Document updated
Sources checked