About dextromethorphan hydrobromide
Cough suppressant
Used for
- Temporarily relieves dry, irritating coughs caused by colds or minor throat irritation.
Usual adult dose
Adults and people aged 12 years or older: 10–20 mg every 4 hours, or 30 mg every 6–8 hours; maximum 120 mg daily.
Usual dose in children
Ages 6–11 years: 5–10 mg every 4 hours, or 15 mg every 6–8 hours; maximum 60 mg daily. Not recommended under 6 years without medical direction.
Common side effects
- Drowsiness or dizziness
- Nausea or stomach upset
- Confusion, especially with excessive doses
Important warnings
- Use only for a dry cough; seek assessment for persistent cough or breathing difficulty.
- Overdose can cause serious harm; keep away from children and measure doses carefully.
- Misuse can cause hallucinations, impaired coordination, or dependence.
- Some syrups contain other active ingredients; check the label to avoid duplicate doses.
Pregnancy
Use only when needed after discussing with a healthcare professional; pregnancy safety information is limited.
Breastfeeding
Safety information is limited; discuss use with a healthcare professional, particularly for newborn or premature infants.
Interactions
- MAO inhibitors: avoid during treatment and for 14 days afterward.
- Serotonergic medicines, including some antidepressants, can increase serotonin syndrome risk.
- Alcohol and sedatives can worsen drowsiness.
- Quinidine and some other medicines can raise dextromethorphan levels.
AI-generated from general medical knowledge, not from this product's official leaflet. It may be incomplete or out of date. Not medical advice — ask a pharmacist or doctor before making any decision.