What happens if I overdose on Tussinate (Diphenhydr Amine/Hydrocodone/Phenylephrine)?
Seek emergency medical attention if an overdose is suspected. Symptoms of a diphenhydramine, hydrocodone, and phenylephrine overdose may include severe drowsiness, dizziness, headache, seizures, dry mouth, cold and clammy skin, flushing, nausea, vomiting, difficulty or decreased breathing, and unconsciousness.