In our latest question and answer, our pharmacist discusses whether or no you can take Dayquil with Nyquil.

You are watching: Can you take dayquil and nyquil at the same time


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Joe asked

Can i take Nyquil and Dayquil together?

Answer

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Short answer: You deserve to take lock Nyquil & Dayquil together, yet not at the same time. In this context, the "sametime" way any time in ~ 4 hrs of one another.

Dayquil Cold & Flu (the most common version) containsthree energetic ingredients: acetaminophen, a ache reliever; dextromethorphan, acough suppressant; and phenylephrine, a decongestant. Phenylephrine is a mildstimulant, and also can do some human being jittery, i beg your pardon is less of a problem for daytimeuse. Dayquil does not contain alcohol.

Nyquil Cold & Flu also contains three energetic ingredients:acetaminophen, dextromethorphan, and also doxylamine, an antihistamine related to theactive ingredient in Benadryl (diphenhydramine). Doxylamine have the right to make youprofoundly drowsy, so it’s much better suited because that nighttime use. Nyquil fluid alsocontains 10% alcohol, for this reason one 30 mL dose contains a comparable amount that alcohol asa shoot glass the wine. The liquicaps carry out NOT save alcohol.

The labeling ~ above both products states not to take much more than 4doses in 24 hours. This is based mainly roughly the paracetamol content, whichis 650 mg every dose of one of two people product (a dose of either product is 30 mL or 2liquicaps)

Acetaminophen, a really common pain and also fever reducer (foundin Tylenol, because that example), is damaged down in the liver after you’ve taken it. Oneof the chemicals it’s broken down into is toxic to the liver, however the human body hasa process for making it non-toxic and also getting rid of it. This process, however,has a restricted capacity, and also once that capacity runs out, the toxic byproductcan develop up and also cause serious liver damages (like, transplant-level, in seriouscases).

That border in a healthy, 150 lb human being is around 4000 mg perday of paracetamol from all sources, consisting of pain relievers, prescriptionproducts, cough/cold/flu medications. However for some human being the limit might belower. To keep yourself well in the clear, It’s finest to take only the lowestamount necessary, and also stay approximately 3000 mg/day maximum. If you have liverimpairment or chronic diseases, talk to your doctor prior to using acetaminophenin any kind of amount.

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Four doses of Dayquil or Nyquil would provide 2600 mg ofacetaminophen per day, therefore you have the right to see how conveniently your daily dose adds up. Youdon’t need to be afraid of the drug, however you do need to be smart and read yourlabels because that all your medications. Youshould also avoid drinking heavily (or ideally, at all) while usingacetaminophen, definition more than 2 drinks/day because that men, 1 drink/day because that women.

There you have actually it. A good place to begin if you desire to useboth products might be 2 doses that Dayquil and also one dose of Nyquil daily. Ifyou need additional relief, you might instead take it 3 doses of Dayquil, 1 doseof Nyquil, or two and also two…whatever helps you avoid nighttime sleeplessness ordaytime drowsiness. Simply be certain to constantly wait at the very least 4 hours between anydose of this products. Many thanks for your question!

PS: If you’re acquisition the fluid form, usage the dosing cup to measure up 30 mL. Your cereal spoon is notaccurate!