Produced from a combination of Acetaminophen, Dextromethorphan HBr and Phenyleprine HCl, Vick’s DayQuil is a quick pick-up solution to relieve cold and flu symptoms. Like any medicine, however, DayQuil has possible side effects. If you experience any side effects, contact your doctor immediately.
This includes lightheadedness, fainting, sweating, nervousness, dizziness or drowsiness.
Experiencing a loss of appetite, pain in upper stomach or vomiting may occur.
Itchiness, hives, swelling in face or hands, swelling or tingling in mouth or throat, chest tightness and trouble breathing are possible signs of an allergic reaction to DayQuil.
A fever lasting longer than 3 days, an ongoing cough with headache and skin rash, redness and swelling may occur.
Severe liver damage may occur if too much Acetaminophen is ingested. Read the directions for use carefully.
According to CVS, other possible side effects of using DayQuil include dark-colored urine or pale stool, unusual bleeding or bruising and yellowing of skin or whites of eyes.