, also known as pentobarbitone, is a short-acting barbiturate. In high doses, causes death by respiratory arrest. In the United States, the drug has been used for executions of convicted criminals. Lundbeck (one of many manufacturers) does not permit its sale to prisons or corrections departments to carry out the death penalty. Abbott's brand of , , which was available in 50 and 100 mg.yellow capsules was discontinued in '99. Prescribed for insomnia, it has been largely replaced by the family of drugs. was widely abused and known on the streets as "yellow jackets" due to their yellow capsule.