Poisoning from an overdose of chlorpheniramine and phenylpropanolamine, which is an antihistamine.
- body as a whole o unsteadiness o tremor o convulsions o fever
- eyes, ears, nose, and throat o dilated pupils o blurred vision
- heart and blood vessels o rapid heartbeat o increased blood pressure
- nervous system o depression o excitation o drowsiness o nervousness o hallucinations o disorientation o delirium
Before Calling Emergency
Determine the following information:
- the patient’s age, weight, and condition
- the name of the product (ingredients and strengths if known)
- the time it was swallowed
- the amount swallowed
Poison Control, or a local emergency number
They will instruct you if it is necessary to take the patient to the hospital. See Poison Control centers for telephone numbers and addresses. Take the container with you to the emergency room.
What to expect at the emergency room
Some or all of the following procedures may be performed:
- Induce emesis unless seizures are imminent.
- Use gastric lavage.
- Administer activated charcoal.
- Administer a laxative.
- Treat the symptoms.
If the patient survives the first 24 hours, survival is likely. Few patients actually die from an antihistamine overdose (see antihistamines - oral, antihistamines and decongestants - oral).
by Janet G. Derge, M.D.
All ArmMed Media material is provided for information only and is neither advice nor a substitute for proper medical care. Consult a qualified healthcare professional who understands your particular history for individual concerns.