Primidone is an anticonvulsant medication used mainly to treat seizures. It is also known as Mysoline and is classified as a barbiturate drug. Synonyms for primidone include phenobarbital, which is another anticonvulsant that works similarly, and carbamazepine, which is used to treat nerve pain and bipolar disorder. Other synonyms include sodium valproate, which is used to treat epilepsy and bipolar disorder, and lamotrigine, which is used to treat seizures and mood disorders. Primidone is commonly used to treat epilepsy and seizures in dogs, and synonyms for primidone for dogs include Klonopin, Phenobarbital, and Gabapentin.