Yash Pharma Laboratories Pvt. Ltd. - Product List Azelastine Azelastine is a selective histamine antagonist, prescribed in treating allergic rhinitis. Trade Names : Optihist -AZ Eye More ... Meclizine Meclizine is an antihistamine, prescribed for nausea, vomiting and dizziness caused by motion sickness. It is also used for vertigo. Trade Names : PNV More ...