Every cold season, someone at my counter asks the same question: can I take these two together?
Usually it’s DayQuil and Tylenol. Or NyQuil and Theraflu. Two boxes, each taken “as directed” — together, a hidden double dose.
Acetaminophen sends about 56,000 people to the ER every year, and it’s hiding in more than 600 medicines you can buy over the counter or get prescribed. Only 31% of adults even know that Tylenol’s active ingredient is acetaminophen.
So I made one page that ends the guesswork. Every common U.S. cold, flu, and pain medicine — DayQuil, NyQuil, Tylenol, Mucinex, Theraflu, Benadryl and more — one row each. One glance shows where the same drug is hiding in two different boxes.
It’s free. Subscribe and the chart lands in your inbox — plus my one email a week on the medicine mistakes I see behind the pharmacy counter.
[ Subscribe — Get the Free Chart ]
P.S. The chart doesn’t tell you what to take. It tells you what you’re already taking. That’s the part that keeps people out of the ER.

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