What happens if I overdose on HyTan (Chlorpheniramine Hydrocodone)?
Seek emergency medical attention if you think you have used too much of this medicine. An overdose of chlorpheniramine and hydrocodone can be fatal, especially to a child. Overdose symptoms may include dry mouth, cold and clammy skin, flushing, large pupils, nausea, vomiting, severe dizziness or drowsiness, seizure (convulsions), shallow breathing, slow heart rate, blue colored skin, feeling light-headed, or fainting.