Promethazine dm is an inexpensive drug used to treat 
nasal congestion, 
allergic rhinitis, 
cold symptoms, and other conditions. It is more popular than comparable drugs. Promethazine is only available as a generic drug; all brands have been discontinued. Generic promethazine dm is covered by most Medicare and insurance plans, but some pharmacy coupons or cash prices may be lower.
Get Promethazine DM for as low as $2.00, which is 95% off the average retail price of $42.80 for the most common version, by using a GoodRx coupon.