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A member asked:
Can nyquil/dayquil help prevent a cold? or is it only for after you get a cold? can you use both?
A doctor has provided 1 answer
No and yes: They're not going to help prevent a cold, but you can take dayquil during the day and nyquil at night if you want. Don't take them together, as they both have all the same ingredients, except the dayquil has a decongestant also for congestion (but not the nyquil, because decongestants can often keep you awake).
Answered 3/19/2017
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