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Dextromethorphan

OTC Oral RxCUI 1373045
Contents

Overview

Active ingredient
Dextromethorphan
Established class
Uncompetitive N-methyl-D-aspartate Receptor Antagonist; Sigma-1 Agonist
Mechanism class
Uncompetitive NMDA Receptor Antagonists; Sigma-1 Receptor Agonists
Route
Oral
Label date
2026-05-27

Indications and usage

Uses temporarily relieves cough due to minor throat and bronchial irritation as may occur with the common cold or inhaled irritants the impulse to cough to help you get to sleep

Purpose

Cough suppressant

Dosage and administration

Directions shake bottle well before use measure only with dosing cup provided do not use dosing cup with other products dose as follows or as directed by a doctor mL = milliliter adults and children 12 years of age and over 10 mL every 12 hours, not to exceed 20 mL in 24 hours children 6 to under 12 years of age 5 mL every 12 hours, not to exceed 10 mL in 24 hours children 4 to under 6 years of age 2.5 mL every 12 hours, not to exceed 5 mL in 24 hours children under 4 years of age do not use

Warnings

Do not use if you are now taking a prescription monoamine oxidase inhibitor (MAOI) (certain drugs for depression, psychiatric, or emotional conditions, or Parkinson's disease), or for 2 weeks after stopping the MAOI drug. If you do not know if your prescription drug contains an MAOI, ask a doctor or pharmacist before taking this product. Ask a doctor before use if you have chronic cough that lasts such as occurs with smoking, asthma, or emphysema cough that occurs with too much phlegm (mucus) Stop use and ask a doctor if cough lasts more than 7 days, comes back, or occurs with fever, rash, or headache that lasts. These could be signs of a serious condition. If pregnant or breast-feeding, ask a health professional before use. Keep out of reach of children. In case of overdose, get medical help or contact a Poison Control Center right away.

Do not use

if you are now taking a prescription monoamine oxidase inhibitor (MAOI) (certain drugs for depression, psychiatric, or emotional conditions, or Parkinson's disease), or for 2 weeks after stopping the MAOI drug. If you do not know if your prescription drug contains an MAOI, ask a doctor or pharmacist before taking this product.

Ask a doctor before use if

Ask a doctor before use if you have chronic cough that lasts such as occurs with smoking, asthma, or emphysema cough that occurs with too much phlegm (mucus)

Stop use and ask a doctor if

and ask a doctor if cough lasts more than 7 days, comes back, or occurs with fever, rash, or headache that lasts. These could be signs of a serious condition.

Pregnancy or breast-feeding

If pregnant or breast-feeding, ask a health professional before use.

Active ingredient (label)

(in each 5 mL) Dextromethorphan polistirex equivalent to 30 mg dextromethorphan hydrobromide

Inactive ingredients

s citric acid anhydrous, D&C red no. 33, edetate disodium, ethylcellulose, FD&C blue no. 1, flavor, high fructose corn syrup, methylparaben, partially hydrogenated vegetable oil (soybean, cottonseed), polyethylene glycol 3350, polysorbate 80, propylene glycol, propylparaben, purified water, sucrose, tragacanth, xanthan gum

Storage and handling

Other information each 5 mL contains: sodium 7 mg store at 20-25°C (68-77°F) dosing cup provided

Keep out of reach of children

of children. In case of overdose, get medical help or contact a Poison Control Center right away.