Apronal (brand name Sedormid), or apronalide, also known as allylisopropylacetylurea or allylisopropylacetylcarbamide, is a hypnotic/sedative drug of the ureide (acylurea) group synthesized in 1926[1] by Hoffmann-La Roche.

[2] In accordance, it is similar in action to the barbiturates, although considerably milder in comparison (formerly used as a daytime sedative at doses of 1 to 2 grams every 3 to 4 hours).

[2] Upon the finding that it caused patients to develop thrombocytopenic purpura, apronal was withdrawn from clinical use.

[3] Medicines with apronal are no longer used except in Japan and South Korea.

[3] Notably Australian Therapeutic Goods Administration issued a safety alert in May 2023 which prohibits the sale, supply and use of Japanese EVE-branded products in Australia[4] due to its dangerous side effects.