Answer:
Results may vary.
Step-by-step explanation:
Age and many other factors in this scenario help determine the severity as if you're and infant, elderly, regular alcoholic or have allergic reactions to any of the chemicals (like acetaminophen which is a causes liver damage) in Dayquil, you will have more severe reactions to Dayquil.
Regular symptoms of Dayquil may include but not limited to: nausea, nervousness, Dizziness and many more, furthermore, these symptoms may vary depending on the factors above. Dayquil specifically mentions on it's bottles that doses must not exceed 4 doses in 24 hours and list that Severe liver damage may occur if you exceed these 4 doses. Furthermore, you will suffer from lightheadedness, vomiting, Nausea, diarrhea and maybe even death depending on your body's current situation.