Answer
Phenobarbital sodium is thought to prolong the opening time of chloride ion channels in postsynaptic nerve cell membranes, causing membrane hyperpolarisation and thereby impairing nerve impulse propagation.
Sources for this answer
- Phenobarbital Sodium 30mg/ml InjectionMartindale Pharma, an Ethypharm Group Company · emc · SmPC §5.1 Pharmacodynamic properties · Version 5Document updated
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