Will Phenobarbital Kill a Dog?

Phenobarbital is generally safe for dogs when prescribed in the correct dosage, however there are some short-term and long-term side effects that may occur.

Can phenobarbital cause death in dogs?

Symptoms of over dosage of Phenobarbital are ataxia (drunk acting), lethargy, sedation, recumbency (inability to stand), depression, hypothermia (decreased temperature), coma, and death. In addition, there is also a concern for damage to the liver.

How much phenobarbital is lethal for dogs?

There was no obvious relationship between the type of tissue analyzed and pentobarbital concentration, with the exception of skin samples that had consistently lower phenobarbital concentrations than meat. The reported oral median lethal dose of pentobarbital in the dog is 85 mg/kg.