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Cyclopentobarbital
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<p>Cyclopentobarbital sodium (Cyclopal, Dormisan) is a <a href="/facts/Barbiturate/d3PhtK8b">barbiturate</a> derivative invented in the 1940s. It has <a href="/facts/Sedative/JWzvq66P">sedative</a> and <a href="/facts/Anticonvulsant/uR8cxJbj">anticonvulsant</a> properties, and was used primarily as an anaesthetic in <a href="/facts/Veterinary/KYNaodgl">veterinary</a> medicine. Cyclopal is considered similar in effects to <a href="/facts/Phenobarbital/G236GSuW">phenobarbital</a> but lasts almost three times as long, and is considered a long-acting barbiturate with a fairly slow onset of action. </p>