Phenergan (promethazine) is an antihistamine medication used to treat allergies. Hay fever and other respiratory allergies. It is also used to treat dizziness, nausea and vomiting. Phenergan is available in tablet and injection forms and is easy to use. This is a safe and effective method Medicines to relieve allergies and nausea. Buy Phenergan online from our website with fast and easy delivery.