What is dextromethorphan?
Dextromethorphan is a safe and effective active ingredient found in well over 100 over-the-counter cough and cold products. First approved by the U.S. Food and Drug Administration in the 1950s, it is an effective, non-narcotic, non-addictive cough suppressant that works by raising the coughing threshold in the brain. It is the most widely used cough suppressant in the United States.
