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Dextromethorphan, Phenylephrine, Diphenhydramine

Dextromethorphan, Phenylephrine, Diphenhydramine

Dextromethorphan (DXM): It is a cough suppressant that affects the signals in the brain responsible for the cough reflex. Phenylephrine: This is a decongestant that narrows blood vessels in the nasal passages to reduce congestion. Diphenhydramine: An antihistamine that reduces the effects of histamine in the body, relieving symptoms of allergies.


This combination of medications is often found in over-the-counter cough and cold products. It is used to relieve symptoms such as cough, congestion, runny nose, and sneezing.


Dosage may vary depending on the specific product. Follow the instructions on the label or as directed by a healthcare professional. Do not exceed the recommended dosage.


Allergies: Avoid if allergic to any of the components. Monoamine Oxidase Inhibitors (MAOIs): Contraindicated with the use of MAOIs due to potential drug interactions.

Special Precautions

Pregnancy and Breastfeeding: Consult a healthcare professional before using during pregnancy or breastfeeding. Medical Conditions: Inform your healthcare provider if you have any pre-existing medical conditions, such as hypertension, diabetes, or respiratory issues.

Side Effects

Common: Drowsiness, dizziness, nausea. Serious: Irregular heartbeat, difficulty urinating, severe dizziness.

Drug Interactions

MAOIs: Potential for hypertensive crisis. Sedatives/Alcohol: Enhanced sedative effects.

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