Answer
No. Abrupt withdrawal can cause rebound seizures and a severe withdrawal syndrome; changes should be medically supervised.
Sources for this answer
- Phenobarbital Colonis 50 mg/5 ml Oral Suspension — Current selected SmPCemc · Summary of Product Characteristics
- Phenobarbital Sodium 30mg/ml Injection — Current selected SmPCemc · Summary of Product Characteristics
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.