Answer
Yes, Phenobarbital Colonis 50 mg/5 ml Oral Suspension contains propylene glycol (E1520) as part of its lemon flavour.
Sources for this answer
- Phenobarbital Colonis 50 mg/5 ml Oral SuspensionColonis Pharma Ltd · emc · SmPC §6.1 List of excipients · Version 1Document updated
Sources checked