What happens if I overdose on Nyquil Cold Medicine (Apap/Dextromethorphan/Doxylamine/Pse)?
Seek emergency medical attention if you think you have used too much of this medicine. Overdose symptoms may include dry mouth, feeling restless or nervous, dizziness, drowsiness, nausea, vomiting, diarrhea, stomach pain, loss of appetite, increased sweating, warmth or tingly feeling, seizure (convulsions), or coma.