Oplopanax japonicus is species of deciduous shrub that can grow as high as 3 m (9.8 ft) tall.

This species belongs to a genus that is rich in calcium oxalate, which is toxic to the digestive system.

[1] Oplopanax japonicus is naturally found in East Asia, specifically in Japan.

It forms seldom and randomly branched stems that are approximately 1 m (3 ft 3 in) long.

Deciduous, can grow up to 3 m (9.8 ft) tall, Branches bulky, with solid yellow-orange prickles.

has been isolated and a synthetic derivative of the ketone form has been commercially produced in Japan to treat cough.