Codominance definition, Ecology. being one of two or more species that are equally dominant in a biotic community: a forest in which oak and hickory are codominant. See more. Dictionary.com
Meclizine is an antihistamine that reduces the effects of natural chemical histamine in the body. Meclizine is used to treat or prevent nausea, vomiting, and dizziness caused by motion sickness. It is also used to treat symptoms of vertigo (dizziness or spinning sensation) caused by disease that affects your inner ear. Meclizine may also be used for purposes not listed in this medication guide.
Meclizine is a first-generation antihistamine of the piperazine class. It is structurally and pharmacologically similar to buclizine, cyclizine, and hydroxyzine, but has a shorter half-life of six hours compared to cyclizine and hydroxyzine with about 20 hours (though half-life should not be confused with duration).eclizine is approved by the U.S. Food and Drug Administration (FDA) to treat symptoms of motion sickness and for management of vertigo that stems from diseases affecting the vestibular system.