Promethazine (Phenadoz) is an inexpensive drug used to treat allergic reactions and to treat or prevent nausea and vomiting from illness. It is also used to help treat pain or nausea after surgery. It is available in generic and brand versions. Generic promethazine is covered by most Medicare and insurance plans, but some pharmacy coupons or cash prices may be lower.

Get Promethazine for as low as $6.33, which is 80% off the average retail price of $32.20 for the most common version, by using a GoodRx coupon.