Mar-Cof BP is part of the Antihistamine / Opioid / Alpha-1 Agonist Combinations class and treats Nasal Congestion, Allergic Rhinitis, Cold Symptoms and other conditions. Antihistamine / opioid / alpha-1 agonist combinations are used to treat cough, nasal congestion, cold symptoms, and allergic rhinitis. They work by suppressing cough, relieving nasal congestion, and reducing cold symptoms. Mar-Cof BP is only available as a brand name drug. Get Mar-Cof BP for as low as $19.95, save up to 80% off the average retail price for the most common version, by using a GoodRx coupon.