Dimenhydrinate is an over-the-counter drug

Over-the-counter drug

Over-the-counter drugs are medicines that may be sold directly to a consumer without a prescription from a healthcare professional, as compared to prescription drugs, which may be sold only to consumers possessing a valid prescription...

 used to prevent nausea

Nausea

Nausea , is a sensation of unease and discomfort in the upper stomach with an involuntary urge to vomit. It often, but not always, precedes vomiting...

 and motion sickness

Motion sickness

Motion sickness or kinetosis, also known as travel sickness, is a condition in which a disagreement exists between visually perceived movement and the vestibular system's sense of movement...

. It is marketed in Canada as Gravol, in Portugal as Viabom, in Brazil as Dramin, in Ecuador as Anautin, in Hungary as Daedalon, and in Indonesia under the brand name Antimo, and in Thailand, Dimenhydrinate (ไดเมนไฮดริเนท), is marketed under the brand name ไดเมนนีน. It is most commonly used as pills, although it is also available in liquid form and in suppositories.