| Other countries that have manufactured phenobarbital since 1997 include India, Japan, the Russian Federation and Switzerland. |
| Medications used in this approach include paregoric, tincture of opium, phenobarbital, benzodiazepines, and chlorpromazine. |
| An earlier diversion attempt in Afghanistan involved 5,000 kg of phenobarbital, which had also been used to adulterate heroin. |
| Carbamazepine, phenobarbital and phenytoin are commonly prescribed for the management of epilepsy and other disorders. |
| Drug interactions with phenobarbital, phenytoin and carbamazepine may lower tricyclic antidepressant levels. |
| Although a small benefit has been found from the combination of belladonna and phenobarbital, concern over adverse effects and possible addiction problems has limited its use. |
