Poisoning from an overdose of diphenhydramine.
Note: This list is not all inclusive.
- Body as a whole o Unsteadiness o Tremor o Convulsions o Flushed skin
- Eyes, ears, nose, and throat o Dilated pupils
- Heart and blood vessels o Rapid heartbeat
- Nervous system o Coma o Excitation o Drowsiness o Nervousness o Hallucinations o Disorientation o Delirium
Call Poison Control Center for appropriate treatment.
Before Calling Emergency
Determine the following information:
- The patient’s age, weight, and condition
- Name of product (as well as the ingredients and strength 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:
- Use gastric lavage.
- Treat the symptoms.
- Activated charcoal.
If the patient survives the first 24 hours, recovery is likely. Few patients actually die from an antihistamine overdose.
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.