 [ Symptoms ] how can we find the state health exchanges [ Disease ] dimetapp cold & allergy contains two ingredients one for runny nose and allergy symptoms brompheniramine and one for congestion phenylephrine delsym used to quiet dry coughs contains dextromethorphan there are no interactions between these three medications and they can be used safely together if needed you should always talk to your pharmacist to ensure safe use of over the counter cough and cold products he or she can help you choose the best product for your symptoms and tell you how much is recommended for your child