Anticholinergic antiemetics 

Anticholinergic antiemetics are agents that block muscarinic receptors and inhibit cholinergic transmission from the vestibular nuclei to the vomiting center.

Anticholinergic antiemetics are mainly used to prevent or treat motion sickness.

H1 antihistamines, such as cyclizine, promethazine, and diphenhydramine, or antimuscarinics (anticholinergics) like scopolamine (Hyoscine) are often used to treat and prevent nausea and vomiting induced by vestibular disturbances like vertigo or motion.