Get a free BuzzRx promethazine coupon and save up to 80%. This medication is classified as a phenothiazine. It is used to treat allergy and common cold symptoms such as runny nose and watery eyes, allergic skin reactions, and nausea and vomiting due to motion sickness, surgery, pregnancy, or chemotherapy. The generic medication promethazine is also available under the brand names Promethegan, Phenergan (discontinued), and Remsed (discontinued). The retail price for the most common version of promethazine is $21.00 on average, but with your free BuzzRx discount coupon, you could pay as little as $8.85 at any pharmacy in our network, including Walgreens, CVS, Rite Aid, and more. Ask your pharmacist to enter your BuzzRx promethazine coupon when you drop off your prescription at the pharmacy counter to ensure you're getting the biggest discounts and paying the lowest prices on promethazine.