Dextromethorphan is an antitussive (cough suppressant) available in over-the-counter (OTC) medicines that control coughs due to minor throat and bronchial irritation, as may occur with the common cold or inhaled irritants. It may be written as dextromethorphan or dextromethorphan hydrobromide, but it is the same active ingredient. Dextromethorphan can be the only active ingredient in a cough suppressant medicine, or it can be found in medicines that treat the multiple symptoms of cough and cold. Dextromethorphan is also available in cough suppressant lozenges, which are considered to be topical products because they are dissolved slowly in the mouth, not swallowed whole.

Dextromethorphan is approved by the U.S. Food and Drug Administration (FDA) and is safe and effective when used according to the Drug Facts label. But just like all medicines, cough suppressants should be taken only as directed and stored in a safe, secure location.

  • You are pregnant or breastfeeding.
  • You are currently taking a prescription monoamine oxidase inhibitor (MAOI) (usually contained in drugs for depression, psychiatric or emotional conditions, or Parkinson’s disease) or if you stopped taking an MAOI less than two weeks ago.
  • You have a chronic cough due to smoking, asthma, bronchitis, or emphysema, or if your cough is accompanied by excessive congestion (mucus), unless a healthcare provider tells you to.
  • Your cough lasts for more than one week, comes back, or is accompanied by a fever, rash, or persistent headache.
  • You take too much. Immediately contact a healthcare provider or the poison control national helpline at 800.222.1222.
  • Never give an OTC cough medicine or multi-symptom cough and cold product to a child under the age of 4.
  • Before giving a cough suppressant lozenge to a child, make sure the child is able to safely dissolve a lozenge in their mouth without choking. Read the Drug Facts label carefully for appropriate use in children and contact a healthcare provider as directed.
  • Dextromethorphan-containing medicines are available in different dosage strengths. Do not give any OTC medicine that is only intended for use in adults to a child.
  • Read the Drug Facts label for proper child dosing instructions. Contact a healthcare provider as directed.
  • Click here for more information on giving OTCs to children.
  • While cough suppressant medicines containing dextromethorphan are non-narcotic and non-addictive, dextromethorphan sometimes is abused by young people in an attempt to get high. Reports indicate that teens looking to get high may take 25 to 50 times the recommended amount on the label to get high. Be aware of the possibility for abuse. More information is available at www.StopMedicineAbuse.org.