So is meclizine basically the same thing as promethazine?

Will meclixine do the same for my nausea that promethazine will do for my nausea

Meclizine hydrochloride (Antivert, Bonine, Dramamine Less Drowsy Formula) is an antihistamine medication used for motion sickness and vertigo. It is available over-the-counter (for motion sickness only) or with a prescription (for motion sickness or vertigo).

Promethazine hydrochloride (Phenergan) is a prescription medication approved for a variety of widely different uses. It is probably used most often as a nausea medication, although it is frequently used for other purposes as well.

Almost the same uses but Meclizine is also available as an OTC, whereas Promethazine is available on prescription.