A broad category of multi-ingredient preparations that are marketed for the relief of upper respiratory symptoms resulting from the COMMON COLD; ALLERGIES; or HUMAN INFLUENZA. While the majority of these medications are available as OVER-THE-COUNTER DRUGS some of them contain ingredients that require them to be sold as PRESCRIPTION DRUGS or as BEHIND-THE COUNTER DRUGS.

An absence of warmth or heat or a temperature notably below an accustomed norm.

Gastrointestinal disturbances, skin eruptions, or shock due to allergic reactions to allergens in food.

Errors in prescribing, dispensing, or administering medication with the result that the patient fails to receive the correct drug or the indicated proper drug dosage.

Voluntary cooperation of the patient in taking drugs or medicine as prescribed. This includes timing, dosage, and frequency.

Altered reactivity to an antigen, which can result in pathologic reactions upon subsequent exposure to that particular antigen.

A catarrhal disorder of the upper respiratory tract, which may be viral or a mixed infection. It generally involves a runny nose, nasal congestion, and sneezing.