A Alka-Seltzer Plus Cold and Cough (Chlorpheniramine/Dextromethorp/Phenylephrine) by adhealth32 August 26, 2010 What is Alka-Seltzer Plus Cold and Cough (Chlorpheniramine/Dextromethorp/Phenylephrine)? Chlorpheniramine is an antihistamine that reduces the…