In our latest question and also answer, our pharmacist discusses even if it is or not you have the right to take Dayquil through Nyquil.

You are watching: Nyquil and dayquil at the same time



Joe asked

Can i take Nyquil and also Dayquil together?



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 hours of one another.

Dayquil Cold & Flu (the most typical version) containsthree active ingredients: acetaminophen, a pain reliever; dextromethorphan, acough suppressant; and phenylephrine, a decongestant. Phenylephrine is a mildstimulant, and can make some human being jittery, i m sorry is much less of a trouble for daytimeuse. Dayquil does not contain alcohol.

Nyquil Cold & Flu likewise contains three energetic ingredients:acetaminophen, dextromethorphan, and also doxylamine, one antihistamine related to theactive ingredient in Benadryl (diphenhydramine). Doxylamine deserve to make youprofoundly drowsy, for this reason it’s far better suited because that nighttime use. Nyquil liquid alsocontains 10% alcohol, therefore one 30 mL dose includes a comparable amount the alcohol asa shooting glass that wine. The liquicaps execute NOT save alcohol.

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

Acetaminophen, a very common pain and fever reducer (foundin Tylenol, for example), is damaged down in the liver after did you do it taken it. Oneof the chemistry it’s damaged down right into is toxicity to the liver, however the body hasa procedure for making that non-toxic and getting rid of it. This process, however,has a minimal capacity, and once that volume runs out, the toxic byproductcan develop up and also cause significant liver damages (like, transplant-level, in seriouscases).

That border in a healthy, 150 lb human being is about 4000 mg perday of acetaminophen from all sources, including pain relievers, prescriptionproducts, cough/cold/flu medications. But for some people the limit might belower. To save yourself fine in the clear, It’s best to take just the lowestamount necessary, and stay roughly 3000 mg/day maximum. If you have liverimpairment or chronic diseases, talk to your doctor before using acetaminophenin any type of amount.

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Four sheep of Dayquil or Nyquil would provide 2600 mg ofacetaminophen per day, so you deserve to see how easily your day-to-day dose adds up. Youdon’t need to be afraid of the drug, however you do need to be smart and also read yourlabels because that all your medications. Youshould also avoid drinking heavily (or ideally, at all) if usingacetaminophen, meaning more than 2 drinks/day because that men, 1 drink/day for women.

There you have it. A good place to start if you desire to useboth assets might be two doses of Dayquil and also one sheep of Nyquil daily. Ifyou need added relief, you might instead take it 3 doses of Dayquil, 1 doseof Nyquil, or two and two…whatever helps you stop nighttime sleeplessness ordaytime drowsiness. Simply be sure to constantly wait at least 4 hours between anydose of these products. Thanks for your question!

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