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NyQuil Dosage and Use

Medically reviewed by David Snyder, PharmD Key Takeaways NyQuil is an over-the-counter medication used to treat cold and flu ...
Chlorpheniramine maleate 2mg, dextromethorphan HBr 15mg; per 15mL; liq; cherry flavor; alcohol-free; contains sodium 71mg/15mL. See Contraindications. Hypertensive crisis with MAOIs. Avoid alcohol.