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Benadryl Loss Of Consciousness Side Effects

Benadryl Loss Of Consciousness Side Effect Reports


The following Benadryl Loss Of Consciousness side effect reports were submitted by healthcare professionals and consumers.

This information will help you understand how side effects, such as Loss Of Consciousness, 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.



Loss Of Consciousness, Urinary Incontinence

This Loss Of Consciousness side effect was reported by a consumer or non-health professional from US. A 40-year-old patient (weight:NA) experienced the following symptoms/conditions: urticaria. The patient was prescribed Benadryl Allergy Ultratab (dosage: When Needed), which was started on Oct 12, 2013. Concurrently used drugs:
  • Benadryl Topical Extra Strength (When Needed)
When starting to take Benadryl Allergy Ultratab the consumer reported the following symptoms:
  • Loss Of Consciousness
  • Urinary Incontinence
These side effects may potentially be related to Benadryl Allergy Ultratab.
Head Discomfort, Loss Of Consciousness, Gait Disturbance, Malaise

This Loss Of Consciousness Benadryl Allergy Dye-free side effect was reported by a consumer or non-health professional from US on Aug 20, 2013. A Female , 80 years of age, weighting 124.0 lb, was diagnosed with and was treated with Benadryl Allergy Dye-free. The patient presented the following health conditions:
  • Head Discomfort
  • Loss Of Consciousness
  • Gait Disturbance
  • Malaise
. Benadryl Allergy Dye-free dosage: One Softgel. Additional drugs used at the same time:
  • Singulair
  • Claritin
Hypersensitivity, Loss Of Consciousness, Pyrexia

This is a Benadryl side effect report of a 29-year-old patient (weight:NA) from CA, suffering from the following symptoms/conditions: NA, who was treated with Benadryl (dosage:NA, start time: NS), combined with: NA., and developed a serious reaction and a Loss Of Consciousness side effect. The patient presented with:
  • Hypersensitivity
  • Loss Of Consciousness
  • Pyrexia
which developed after the beginning of treatment. The patient was hospitalized. This side effect report can indicate a possible existence of increased vulnerability to Benadryl treatment in patients suffering from NA, resulting in Loss Of Consciousness.

Loss Of Consciousness, Hypersomnia, Somnolence

A 81-year-old female patient (weight: NA) from US with the following symptoms: multiple allergies started Benadryl Allergy Ultratab treatment (dosage: NA) on NS. Soon after starting Benadryl Allergy Ultratab treatment, the consumer experienced several side effects, including:
  • Loss Of Consciousness
  • Hypersomnia
  • Somnolence
. Concurrently used drugs: NA. This finding indicates that some patients can be more vulnerable to developing Benadryl Allergy Ultratab side effects, such as Loss Of Consciousness.
Loss Of Consciousness, Convulsion, Restlessness, Tremor, Tachycardia, Hypotension, Nausea, Vomiting, Headache

A female patient from US was prescribed and started Benadryl on Mar 07, 2013. Patient felt the following Benadryl side effects: loss of consciousness, convulsion, restlessness, tremor, tachycardia, hypotension, nausea, vomiting, headache Additional patient health information: Female , 32 years of age, The consumer reported the following symptoms: was diagnosed with and. Benadryl dosage: Frequency Text: 25 Mg Once. Concurrently used drugs:
  • Amoxil
  • Solu-medrol
  • Sus-phrine
  • Sodium Chloride
The patient was hospitalized.
Loss Of Consciousness, Latent Tuberculosis, Pneumonia, Productive Cough

This report suggests a potential Benadryl Loss Of Consciousness side effect(s) that can have serious consequences. A 59-year-old female patient from US (weight:NA) was diagnosed with the following health condition(s): NA and used Benadryl (dosage: NA) starting 2010. Soon after starting Benadryl the patient began experiencing various side effects, including:
  • Loss Of Consciousness
  • Latent Tuberculosis
  • Pneumonia
  • Productive Cough
Drugs used concurrently:
  • Methotrexate
Although Benadryl demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Loss Of Consciousness, may still occur.
Off Label Use, Loss Of Consciousness

An adverse event was reported by a consumer or non-health professional on Jun 11, 2012 by a Female taking Benadryl (dosage: One Pill One Time) was diagnosed with and. Location: UNITED STATES , 79 years of age, patient began experiencing various side effects, including: Directly after treatment started, patient experienced the unwanted or unexpected Benadryl side effects: off label use, loss of consciousness. Additional medications/treatments:
Crohn's Disease, Vomiting, White Blood Cell Count Increased, Loss Of Consciousness, Road Traffic Accident, Nausea, Dehydration, Headache

This Loss Of Consciousness problem was reported by a health professional from CANADA. A patient (weight: NA) was diagnosed with the following medical condition(s): NA.On Apr 09, 2012 a consumer started treatment with Benadryl (dosage: NA). The following drugs/medications were being taken at the same time:
  • Remicade (Loding Dose 2)
  • Remicade (First Infusion)
  • Remicade
  • Tylenol (caplet)
  • Hydrocortisone
When commencing Benadryl, the patient experienced the following unwanted symptoms /side effects:
  • Crohn's Disease
  • Vomiting
  • White Blood Cell Count Increased
  • Loss Of Consciousness
  • Road Traffic Accident
  • Nausea
  • Dehydration
  • Headache
The patient was hospitalized. Although all drugs are carefully tested before they are licensed for use, they carry potential side effect risks. Some side effects, such as Loss Of Consciousness, may become evident only after a product is in use by the general population.
Loss Of Consciousness, Hypersensitivity, Off Label Use

This is a Benadryl Regular Strength Allergy side effect report of a 29-year-old patient (weight: NA) from CANADA. The patient developed the following symptoms/conditions: rash and was treated with Benadryl Regular Strength Allergy (dosage: Upc :060093265717) starting Apr 23, 2012. Concurrently used drugs: NA. Soon after that, the consumer experienced the following of symptoms:
  • Loss Of Consciousness
  • Hypersensitivity
  • Off Label Use
The patient was hospitalized. This opens a possibility that Benadryl Regular Strength Allergy could cause Loss Of Consciousness and that some patients may be more susceptible.
Loss Of Consciousness

This Loss Of Consciousness side effect was reported by a consumer or non-health professional from UNITED STATES on Apr 24, 2012. A female patient from UNITED STATES , weighting 200.0 lb, was diagnosed with and was treated with Benadryl. Directly after treatment started, patient experienced the unwanted or unexpected Benadryl side effects: loss of consciousness. Benadryl dosage: NA. These side effects may potentially be related to Benadryl.
Pain, Nausea, Vomiting, Asthenia, Muscle Spasms, Loss Of Consciousness, Hallucination, Headache, Feeling Of Body Temperature Change

This Loss Of Consciousness side effect was reported by a consumer or non-health professional from UNITED STATES. A 60-year-old female patient (weight:NA) experienced the following symptoms/conditions: sinus disorder,gastrooesophageal reflux disease,hypertension,arthritis. The patient was prescribed Benadryl (dosage: Two Liquigels), which was started on Jan 30, 2012. Concurrently used drugs:
  • Nexium
  • Benazepril Hydrochloride
  • Tramadol Hcl (Up To Four Times Daily.)
  • Triamterene And Hydrochlorothiazide (37.5 Mg / 25 Mg)
  • Ranitidine
  • Levoxyl (0.137 Mcg)
When starting to take Benadryl the consumer reported the following symptoms:
  • Pain
  • Nausea
  • Vomiting
  • Asthenia
  • Muscle Spasms
  • Loss Of Consciousness
  • Hallucination
  • Headache
  • Feeling Of Body Temperature Change
These side effects may potentially be related to Benadryl.
Pyrexia, Infusion Related Reaction, Loss Of Consciousness

This Loss Of Consciousness Benadryl side effect was reported by a consumer or non-health professional from UNITED STATES on Mar 29, 2012. A Female , weighting 180.0 lb, was treated with Benadryl. The patient presented the following health conditions:
  • Pyrexia
  • Infusion Related Reaction
  • Loss Of Consciousness
. Benadryl dosage: NA. Additional drugs used at the same time:
  • Prednisone
  • Remicade
Loss Of Consciousness

This is a Benadryl side effect report of a female patient (weight:NA) from UNITED STATES, suffering from the following symptoms/conditions: multiple allergies, who was treated with Benadryl (dosage:NA, start time: NS), combined with: NA., and developed a serious reaction and a Loss Of Consciousness side effect. The patient presented with:
  • Loss Of Consciousness
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 multiple allergies, resulting in Loss Of Consciousness.
Dizziness, Abdominal Pain Upper, Loss Of Consciousness, Heart Rate Decreased, Hypotension, Anaphylactic Reaction, Throat Tightness, Oxygen Saturation Decreased

A female patient (weight: NA) from UNITED STATES with the following symptoms: NA started Benadryl treatment (dosage: NA) on Feb 22, 2012. Soon after starting Benadryl treatment, the consumer experienced several side effects, including:
  • Dizziness
  • Abdominal Pain Upper
  • Loss Of Consciousness
  • Heart Rate Decreased
  • Hypotension
  • Anaphylactic Reaction
  • Throat Tightness
  • Oxygen Saturation Decreased
. Concurrently used drugs:
  • Ventolin Hfa (Inhalation,every 4 As Required.)
  • Prednisone
  • Alprazolam
  • Symbicort
  • Albuterol Sulfate (Nebulisation,every 4 As Required)
  • Xolair
This finding indicates that some patients can be more vulnerable to developing Benadryl side effects, such as Loss Of Consciousness.
Speech Disorder, Feeling Abnormal, Swollen Tongue, Loss Of Consciousness, Dyskinesia, Obstructive Airways Disorder

A female patient from UNITED STATES was prescribed and started Benadryl on Feb 21, 2012. After Benadryl was administered, patient encountered several Benadryl side effects: speech disorder, feeling abnormal, swollen tongue, loss of consciousness, dyskinesia, obstructive airways disorder Additional patient health information: Female , weighting 295.0 lb, The consumer reported the following symptoms: . Benadryl dosage: NA. Concurrently used drugs:
  • Lisinopril And Hydrochlorothiazide (20-25mg Daily Orally)
  • Crestor
  • Nitroglycerin
  • Metformin Hcl
  • Cinnamon
  • Lisinopril And Hydrochlorothiazide (10-12.5mg Daily Orally 2-3 Years Until Dose Change (11/13/2011))
  • Fluoxetine Hcl
  • Pantoprazole
The patient was hospitalized.
Loss Of Consciousness, Syncope, Transient Ischaemic Attack, Overdose, Cerebral Infarction

This report suggests a potential Benadryl Loss Of Consciousness 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
  • Transient Ischaemic Attack
  • Overdose
  • Cerebral Infarction
Drugs used concurrently:
  • Clorotrimeton
Although Benadryl demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Loss Of Consciousness, may still occur.
Syncope, Loss Of Consciousness, Overdose, Cerebral Infarction

An adverse event was reported by a consumer or non-health professional on Dec 20, 2011 by a male taking Benadryl (dosage: NA) . Location: MEXICO , weighting 176.4 lb, patient began experiencing various side effects, including: Patient felt the following Benadryl side effects: syncope, loss of consciousness, overdose, cerebral infarction. Additional medications/treatments:
Multiple prescriptions taken:
  • Clorotrimeton
Haemorrhage, Faeces Discoloured, Contusion, Loss Of Consciousness, Abdominal Pain, Chest Pain, Fall, Breast Injury, Skeletal Injury

This Loss Of Consciousness problem was reported by a consumer or non-health professional from UNITED STATES. A 76-year-old female patient (weight: NA) was diagnosed with the following medical condition(s): NA.On Nov 09, 2011 a consumer started treatment with Benadryl (diphenydramine Hydrochloride) (diphenhydramine Hydrochloride (dosage: NA). The following drugs/medications were being taken at the same time:
  • Acyclovir (aciclovir) (aciclovir)
  • Allegra (fexofenadine Hydrochloride) (fexofenadine Hydrochloride)
  • Benlysta (10 Mg/kg, 1 In 28 D, Intravenous)
  • Glucophage (metformin) (metformin)
  • Glucotrol
  • Singulair (montelukast) (montelukast)
  • Mallox (maalox) (magnesium Hydroxide, Aluminium Hydroxide Gel)
  • Nexium
When commencing Benadryl (diphenydramine Hydrochloride) (diphenhydramine Hydrochloride, the patient experienced the following unwanted symptoms /side effects:
  • Haemorrhage
  • Faeces Discoloured
  • Contusion
  • Loss Of Consciousness
  • Abdominal Pain
  • Chest Pain
  • Fall
  • Breast Injury
  • Skeletal Injury
The patient was hospitalized. Although all drugs are carefully tested before they are licensed for use, they carry potential side effect risks. Some side effects, such as Loss Of Consciousness, may become evident only after a product is in use by the general population.
Loss Of Consciousness, Syncope, Overdose

This is a Benadryl side effect report of a patient (weight: NA) from MEXICO. The patient developed the following symptoms/conditions: NA and was treated with Benadryl (dosage: NA) starting Dec 03, 2011. Concurrently used drugs:
  • Clorotrimeton
Soon after that, the consumer experienced the following of symptoms:
  • Loss Of Consciousness
  • Syncope
  • Overdose
This opens a possibility that Benadryl could cause Loss Of Consciousness and that some patients may be more susceptible.
Off Label Use, Hypotension, Loss Of Consciousness, Overdose

This Loss Of Consciousness side effect was reported by a consumer or non-health professional from UNITED STATES on Oct 11, 2011. A female patient from UNITED STATES , 20 years of age, was diagnosed with and was treated with Benadryl. Patient felt the following Benadryl side effects: off label use, hypotension, loss of consciousness, overdose. Benadryl dosage: NA. These side effects may potentially be related to Benadryl.
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DISCLAIMER: ALL DATA PROVIDED AS-IS, refer to terms of use for additional information.

Benadryl Loss Of Consciousness Causes and Reviews


Reye syndrome is a rare illness that can affect the blood, liver, and brain of someone who has recently had a viral infection. It always follows another illness. Although it mostly affects children and teens, anyone can get it. It can develop quickly and without warning. It is most common during flu season. Symptoms include

  • Nausea and vomiting
  • Listlessness
  • Personality change - such as irritability, combativeness or confusion
  • Delirium
  • Convulsions
  • Loss of consciousness

If these symptoms occur soon after a viral illness, seek medical attention immediately. Reye syndrome can lead to a coma and brain death, so quick diagnosis and treatment are critical. Treatment focuses on preventing brain damage. There is no cure.

The cause of Reye syndrome is unknown. Studies have shown that taking aspirin increases the risk of getting it. Because of that, health care professionals now recommend other pain relievers for young patients.

NIH: National Institute of Neurological Disorders and Stroke


Benadryl Loss Of Consciousness Reviews

Sun, 04 Sep 2011

Can I die from taking this many. Is it physicly addicting? Sorry about my spelling.

Mon, 18 Jul 2011

I loved these strips. I have had allergic reactions to my own allergy shots. After waiting at the Dr.'s office for 15 minutes after my allergy shot, I leave to go shopping. Sometimes I can feel a little thickening in my throat, similar to when I've had a really bad reaction and had to go to the ER for help, or went back to the Dr.'s office for a shot of epinepherine. When I feel just a small reaction beginning, I have put one of the Benadryl Quick Dissolve Strips on my tongue. I get a pretty fast result and I can continue shopping rather than worrying about a worse reaction.

Now, when I went to buy more of this product, it isn't available at any local stores, or on line at safe sites. Each store tells me that people are coming in and wanting them and getting upset when they can't find them.

Why were these strips taken off the market?

Sun, 21 Mar 2010
Does taking too much Benadryl cause a person to fall asleep and not wake up?
Wed, 01 Sep 2010
It was given to me in a hospital through emergency room, for nauseau. Nusrse said that they use it for that as well. Is true and can it be usedat home for the same?
Thu, 24 Mar 2011
My son is allergic to children's Benadryl. It causes him to develop eye infections (conjunctivitus).
Sat, 30 Apr 2011
I've noticed that it when I am with my partner it makes me sensitive, but I am not able to be aroused. Is anyone else having the same issue. I've been taking it for alergies since I was a teenager. Its the only thing that has ever worked for me.
DISCLAIMER: ALL DATA PROVIDED AS-IS, refer to terms of use for additional information.

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Top Benadryl Side Effects

Off Label Use (181)
Dyspnoea (162)
Nausea (141)
Hypersensitivity (139)
Urticaria (126)
Somnolence (119)
Vomiting (116)
Loss Of Consciousness (113)
Rash (109)
Pain (109)
Pruritus (108)
Headache (108)
Overdose (105)
Dizziness (102)
Product Quality Issue (102)
Insomnia (96)
Heart Rate Increased (86)
Hallucination (80)
Feeling Abnormal (79)
Condition Aggravated (78)
Anxiety (46)
Infusion Related Reaction (46)
Tremor (45)
Fatigue (45)
Diarrhoea (43)
Convulsion (42)
Erythema (38)
Malaise (38)
Pyrexia (38)
Asthenia (37)
Swelling Face (37)
Blood Pressure Increased (37)
Pharyngeal Oedema (35)
Throat Tightness (34)
Dehydration (32)
Chest Pain (31)
Swollen Tongue (30)
Pain In Extremity (30)
Cough (30)
Oedema Peripheral (29)
Hypoaesthesia (29)
Chest Discomfort (29)
Incorrect Dose Administered (28)
Abdominal Pain Upper (27)
Eye Swelling (27)
Flushing (26)
Fall (26)
Confusional State (25)
Lip Swelling (24)
Syncope (24)

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