Pentobarbital is mostly superseded by other anesthetics, but it's still sometimes employed for sedation and to control epileptic seizures. When you are allergic to pentobarbital; any aspect of the medicine; or some other drugs, foods, or substances. Notify your health practitioner regarding the allergy and what symptoms you had. 2014. https://pentobarbitalsodiumoverth59136.bloggazzo.com/29629187/not-known-factual-statements-about-what-is-sodium-pentobarbital