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Compare Nyquil vs. Tylenol PM Extra Strength

Head-to-head comparisons of medication uses, side effects, warnings, and more.

Key takeaways

Nyquil Cold and Flu (acetaminophen/dextromethorphan/doxylamine) and Tylenol PM Extra Strength (acetaminophen/diphenhydramine) are both over-the-counter medications, but they serve different purposes. Nyquil Cold and Flu is designed to relieve cold and flu symptoms like cough, sore throat, fever, and runny nose, while Tylenol PM Extra Strength is used to relieve minor aches and pains that make it hard for you to sleep. Nyquil contains three active ingredients: acetaminophen (a pain reliever), dextromethorphan (a cough suppressant), and doxylamine (an antihistamine). In contrast, Tylenol PM combines the pain reliever, acetaminophen with diphenhydramine, an antihistamine that helps you sleep. Nyquil can be taken every 6 hours, whereas Tylenol PM is typically taken once at bedtime. Both medications can cause sleepiness and should not be mixed with alcohol or other medications containing similar ingredients. Both medications are available in pill and liquid forms.

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