Benadryl Overdose Side Effect Reports


The following Benadryl Overdose side effect reports were submitted by healthcare professionals and consumers.

This information will help you understand how side effects, such as Overdose, can occur, and what you can do about them.

A side effect could appear soon after you start Benadryl or it might take time to develop.


Disorientation, Euphoric Mood, Overdose

This Overdose side effect was reported by a consumer or non-health professional from US. A 16-year-old patient (weight:NA) experienced the following symptoms/conditions: NA. The patient was prescribed Benadryl Allergy (dosage: NA), which was started on Jul 27, 2013. Concurrently used drugs: NA. When starting to take Benadryl Allergy the consumer reported the following symptoms:
  • Disorientation
  • Euphoric Mood
  • Overdose
These side effects may potentially be related to Benadryl Allergy.
Completed Suicide, Mechanical Ventilation, Unresponsive To Stimuli, Overdose, Convulsion

This Overdose Benadryl side effect was reported by a consumer or non-health professional from US on Aug 01, 2013. A Female , 41 years of age, was treated with Benadryl. The patient presented the following health conditions:
  • Completed Suicide
  • Mechanical Ventilation
  • Unresponsive To Stimuli
  • Overdose
  • Convulsion
. Benadryl dosage: NA. Additional drugs used at the same time:
  • Xanax
The patient was hospitalized.
Overdose, Victim Of Homicide

This is a Benadryl side effect report of a 2-year-old female patient (weight:NA) from US, suffering from the following symptoms/conditions: homicide, who was treated with Benadryl (dosage:Two Or Three Syringes, start time: 201306), combined with: NA., and developed a serious reaction and a Overdose side effect. The patient presented with:
  • Overdose
  • Victim Of Homicide
which developed after the beginning of treatment. This side effect report can indicate a possible existence of increased vulnerability to Benadryl treatment in female patients suffering from homicide, resulting in Overdose.
Overdose, Dry Mouth

A 34-year-old patient (weight: NA) from US with the following symptoms: NA started Benadryl Allergy Ultratab treatment (dosage: 200mg And For One Year, About 5-6 Years Ago Took 800-900 Mg) on May 21, 2001. Soon after starting Benadryl Allergy Ultratab treatment, the consumer experienced several side effects, including:
  • Overdose
  • Dry Mouth
. Concurrently used drugs: NA. This finding indicates that some patients can be more vulnerable to developing Benadryl Allergy Ultratab side effects, such as Overdose.
Asperger^s Disorder, Overdose, Screaming

A patient from US was prescribed and started Benadryl on Jun 20, 2013. Patient felt the following Benadryl side effects: asperger^s disorder, overdose, screaming Additional patient health information: male , weighting 30.00 lb, The consumer reported the following symptoms: . Benadryl dosage: NA. Concurrently used drugs: NA.
Renal Failure, Urinary Tract Infection, Overdose, Road Traffic Accident, Sedation, Agitation

This report suggests a potential Benadryl Allergy Dye-free Overdose side effect(s) that can have serious consequences. A 26-year-old patient from US (weight:NA) was diagnosed with the following health condition(s): NA and used Benadryl Allergy Dye-free (dosage: Over 50 Liquid Gels Had Been Doing For About A Year) starting NS. Soon after starting Benadryl Allergy Dye-free the patient began experiencing various side effects, including:
  • Renal Failure
  • Urinary Tract Infection
  • Overdose
  • Road Traffic Accident
  • Sedation
  • Agitation
Drugs used concurrently:
  • Adderall
The patient was hospitalized. Although Benadryl Allergy Dye-free demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Overdose, may still occur.
Tardive Dyskinesia, Depressed Level Of Consciousness, Aspiration, Overdose

An adverse event was reported by a physician on Apr 17, 2013 by a male taking Benadryl (dosage: NA) . Location: US , 91 years of age, weighting 104.9 lb, patient began experiencing various side effects, including: Directly after treatment started, patient experienced the unwanted or unexpected Benadryl side effects: tardive dyskinesia, depressed level of consciousness, aspiration, overdose. Additional medications/treatments: The patient was hospitalized.
Overdose, Off Label Use

This Overdose problem was reported by a consumer or non-health professional from US. A patient (weight: NA) was diagnosed with the following medical condition(s): euphoric mood.On Jul 01, 2012 a consumer started treatment with Benadryl (dosage: (20-30 Tabs/caps/gels) 15-30 Pill Each Day) Approximately 6-8 Months). The following drugs/medications were being taken at the same time:
  • Marijuana
  • Cocaine
  • Maitake Mushroom
When commencing Benadryl, the patient experienced the following unwanted symptoms /side effects:
  • Overdose
  • Off Label Use
Although all drugs are carefully tested before they are licensed for use, they carry potential side effect risks. Some side effects, such as Overdose, may become evident only after a product is in use by the general population.
Hallucination, Abnormal Dreams, Insomnia, Overdose, Off Label Use

This is a Benadryl Allergy side effect report of a 50-year-old female patient (weight: NA) from US. The patient developed the following symptoms/conditions: NA and was treated with Benadryl Allergy (dosage: NA) starting Mar 06, 2013. Concurrently used drugs:
  • Tylenol Pm
  • Ritalin (20mg, 3 Times A Day From Week.)
  • Ritalin (20mg, 3 Times A Day From Week.)
  • Ritalin (20mg, 3 Times A Day From Week.)
  • Bupropion (150mg For One And Half Weeks)
  • Abilify (5mg From Years)
  • Citalopram (20mg/day From Years)
  • Percocet (5mg/325mg 4 Times A Day From Years)
Soon after that, the consumer experienced the following of symptoms:
  • Hallucination
  • Abnormal Dreams
  • Insomnia
  • Overdose
  • Off Label Use
This opens a possibility that Benadryl Allergy could cause Overdose and that some female patients may be more susceptible.
Overdose, Off Label Use, Therapeutic Response Unexpected

This Overdose side effect was reported by a consumer or non-health professional from US on Apr 24, 2013. A patient from US , 42 years of age, weighting 145.0 lb, was diagnosed with and was treated with Benadryl Allergy. Directly after treatment started, patient experienced the unwanted or unexpected Benadryl side effects: overdose, off label use, therapeutic response unexpected. Benadryl Allergy dosage: 6-12 Tablets Taken 2x. These side effects may potentially be related to Benadryl Allergy.
Hallucination, Cerebrovascular Accident, Overdose, Dizziness, Malaise, Off Label Use

This Overdose side effect was reported by a consumer or non-health professional from US. A 83-year-old female patient (weight:NA) experienced the following symptoms/conditions: arthropod bite. The patient was prescribed Benadryl Allergy Kapgels (dosage: 2 Kapgels, One Morning And One At Night), which was started on NS. Concurrently used drugs:
  • Benadryl Topical Extra Strength
  • Ativan
When starting to take Benadryl Allergy Kapgels the consumer reported the following symptoms:
  • Hallucination
  • Cerebrovascular Accident
  • Overdose
  • Dizziness
  • Malaise
  • Off Label Use
The patient was hospitalized. These side effects may potentially be related to Benadryl Allergy Kapgels.
Overdose, Hallucination, Hypersomnia

This Overdose Benadryl side effect was reported by a consumer or non-health professional from UNITED STATES on Apr 02, 2012. A Female , 33 years of age, weighting 220.0 lb, was treated with Benadryl. The patient presented the following health conditions:
  • Overdose
  • Hallucination
  • Hypersomnia
. Benadryl dosage: 300 Pills Weekly In The Beginning And 700-900 Pills A Week At The End. Additional drugs used at the same time: NA.
Hallucination, Overdose, Hypersomnia

This is a Benadryl side effect report of a 36-year-old female patient (weight:NA) from UNITED STATES, suffering from the following symptoms/conditions: NA, who was treated with Benadryl (dosage:300 Pills Weekly In The Beginning And 700-900 Pills A Week At The End, start time: NS), combined with: NA., and developed a serious reaction and a Overdose side effect. The patient presented with:
  • Hallucination
  • Overdose
  • Hypersomnia
which developed after the beginning of treatment. This side effect report can indicate a possible existence of increased vulnerability to Benadryl treatment in female patients suffering from NA, resulting in Overdose.
Loss Of Consciousness, Syncope, Transient Ischaemic Attack, Overdose, Cerebral Infarction

A patient (weight: NA) from MEXICO with the following symptoms: NA started Benadryl treatment (dosage: NA) on Dec 03, 2011. Soon after starting Benadryl treatment, the consumer experienced several side effects, including:
  • Loss Of Consciousness
  • Syncope
  • Transient Ischaemic Attack
  • Overdose
  • Cerebral Infarction
. Concurrently used drugs:
  • Clorotrimeton
This finding indicates that some patients can be more vulnerable to developing Benadryl side effects, such as Overdose.
Syncope, Loss Of Consciousness, Overdose, Cerebral Infarction

A patient from MEXICO was prescribed and started Benadryl on Dec 20, 2011. After Benadryl was administered, patient encountered several Benadryl side effects: syncope, loss of consciousness, overdose, cerebral infarction Additional patient health information: male , weighting 176.4 lb, The consumer reported the following symptoms: . Benadryl dosage: NA. Concurrently used drugs:
  • Clorotrimeton
Loss Of Consciousness, Syncope, Overdose

This report suggests a potential Benadryl Overdose side effect(s) that can have serious consequences. A patient from MEXICO (weight:NA) was diagnosed with the following health condition(s): NA and used Benadryl (dosage: NA) starting Dec 03, 2011. Soon after starting Benadryl the patient began experiencing various side effects, including:
  • Loss Of Consciousness
  • Syncope
  • Overdose
Drugs used concurrently:
  • Clorotrimeton
Although Benadryl demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Overdose, may still occur.
Disturbance In Social Behaviour, Overdose, Dependence

An adverse event was reported by a consumer or non-health professional on Oct 22, 2011 by a male taking Benadryl (dosage: NA) . Location: UNITED STATES , 23 years of age, patient began experiencing various side effects, including: Patient felt the following Benadryl side effects: disturbance in social behaviour, overdose, dependence. Additional medications/treatments:
Off Label Use, Hypotension, Loss Of Consciousness, Overdose

This Overdose problem was reported by a consumer or non-health professional from UNITED STATES. A 20-year-old female patient (weight: NA) was diagnosed with the following medical condition(s): hypersensitivity,urticaria.On Oct 01, 2010 a consumer started treatment with Benadryl (dosage: NA). The following drugs/medications were being taken at the same time: NA. When commencing Benadryl, the patient experienced the following unwanted symptoms /side effects:
  • Off Label Use
  • Hypotension
  • Loss Of Consciousness
  • Overdose
Although all drugs are carefully tested before they are licensed for use, they carry potential side effect risks. Some side effects, such as Overdose, may become evident only after a product is in use by the general population.
Unevaluable Event, Pharyngeal Oedema, Condition Aggravated, Overdose, Dyspnoea, Urticaria, Hypersensitivity

This is a Benadryl side effect report of a 18-year-old female patient (weight: NA) from UNITED STATES. The patient developed the following symptoms/conditions: NA and was treated with Benadryl (dosage: NA) starting Jan 01, 2004. Concurrently used drugs: NA. Soon after that, the consumer experienced the following of symptoms:
  • Unevaluable Event
  • Pharyngeal Oedema
  • Condition Aggravated
  • Overdose
  • Dyspnoea
  • Urticaria
  • Hypersensitivity
The patient was hospitalized. This opens a possibility that Benadryl could cause Overdose and that some female patients may be more susceptible.
Hypersensitivity, Pharyngeal Oedema, Overdose, Condition Aggravated, Urticaria

This Overdose side effect was reported by a consumer or non-health professional from UNITED STATES on Aug 30, 2011. A female patient from UNITED STATES , 18 years of age, was treated with Benadryl. Patient felt the following Benadryl side effects: hypersensitivity, pharyngeal oedema, overdose, condition aggravated, urticaria. Benadryl dosage: NA.
Multiple prescriptions taken:
  • Diphenhydramine Hydrochloride
The patient was hospitalized. These side effects may potentially be related to Benadryl.
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