See the DrugPatentWatch profile for Dextromethorphan
What dose of dextromethorphan is used for cough (adults)?
Typical adult dosing for dextromethorphan (an antitussive) depends on the specific product formulation (immediate-release vs extended-release) and its strength. Without the exact product label, the most reliable way to determine the correct dose is to follow the mg-per-serving directions on your medication package or ask a pharmacist.
What dose of dextromethorphan is used for children?
Child dosing also depends on age and the exact product concentration (since many cough syrups list different mg per mL). Because dosing errors are common with cough/cold medicines, the safest approach is to use the child’s age-appropriate label dosing (mg per dose) and measure with an accurate device (not a kitchen spoon).
How often is dextromethorphan taken?
How frequently you dose dextromethorphan depends on whether the product is immediate-release (often more frequent) or extended-/extended-release (often less frequent). The dosing interval should match the product label instructions.
How do I calculate the dose from mg and mL (syrups)?
If your bottle lists “X mg per mL,” you can calculate the mL per dose as:
dose (mL) = target mg per dose ÷ mg per mL.
If you tell me your product’s “mg per mL” (or mg per tablet/capsule) and the patient’s age, I can help translate the label instructions into a clear dose measurement.
Important safety checks before taking dextromethorphan
Dextromethorphan has dosing and interaction risks (for example, interactions with certain antidepressants and other serotonergic drugs can increase the risk of serotonin syndrome). If you’re taking any prescription antidepressants or other medicines, it’s important to confirm dosing and safety with a pharmacist.
Tell me the exact product so I can give the correct dose
Reply with:
1) the product name and strength (e.g., “20 mg/10 mL” or “30 mg per tablet”),
2) whether it is liquid, tablet, or extended-release, and
3) the patient’s age (and weight if a child),
and I’ll translate the label into the correct mg and mL or tablet/capsule dose.