Benadryl Headache Side Effect Reports


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

This information will help you understand how side effects, such as Headache, 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.


Food Allergy, Local Swelling, Arthralgia, Off Label Use, Urticaria, Diarrhoea, Dyspepsia, Headache

This Headache side effect was reported by a consumer or non-health professional from CA. A 58-year-old female patient (weight:NA) experienced the following symptoms/conditions: allergy to arthropod sting. The patient was prescribed Benadryl Rs Allergy 25mg Caplets (dosage: 1-2 Caplets), which was started on Aug 12, 2013. Concurrently used drugs: NA. When starting to take Benadryl Rs Allergy 25mg Caplets the consumer reported the following symptoms:
  • Food Allergy
  • Local Swelling
  • Arthralgia
  • Off Label Use
  • Urticaria
  • Diarrhoea
  • Dyspepsia
  • Headache
These side effects may potentially be related to Benadryl Rs Allergy 25mg Caplets.
Loss Of Consciousness, Convulsion, Restlessness, Tremor, Tachycardia, Hypotension, Nausea, Vomiting, Headache

This Headache Benadryl side effect was reported by a health professional from US on Mar 07, 2013. A Female , 32 years of age, was diagnosed with and was treated with Benadryl. The patient presented the following health conditions:
  • Loss Of Consciousness
  • Convulsion
  • Restlessness
  • Tremor
  • Tachycardia
  • Hypotension
  • Nausea
  • Vomiting
  • Headache
. Benadryl dosage: Frequency Text: 25 Mg Once. Additional drugs used at the same time:
  • Amoxil
  • Solu-medrol
  • Sus-phrine
  • Sodium Chloride
The patient was hospitalized.
Headache, Musculoskeletal Pain, Back Pain, Systemic Lupus Erythematosus, Emotional Disorder, Discomfort, Visual Acuity Reduced, Visual Impairment

This is a Benadryl side effect report of a 18-year-old female patient (weight:NA) from CA, suffering from the following symptoms/conditions: NA, who was treated with Benadryl (dosage:NA, start time: Jun 10, 2013), combined with:
  • Tylenol
  • Antibiotics
  • Benlysta (923mg See Dosage Text)
  • Cortisone
  • Coumadin
  • Cellcept
  • Prednisone
, and developed a serious reaction and a Headache side effect. The patient presented with:
  • Headache
  • Musculoskeletal Pain
  • Back Pain
  • Systemic Lupus Erythematosus
  • Emotional Disorder
  • Discomfort
  • Visual Acuity Reduced
  • Visual Impairment
which developed after the beginning of treatment. The patient was hospitalized and became disabled. This side effect report can indicate a possible existence of increased vulnerability to Benadryl treatment in female patients suffering from NA, resulting in Headache.
Suicidal Ideation, Hallucination, Psychiatric Symptom, Mania, Abdominal Pain Upper, Constipation, Headache

A 8-year-old patient (weight: NA) from US with the following symptoms: multiple allergies started Benadryl treatment (dosage: 25 Ml To 50 Ml Four Times A Week) on Jan 11, 2010. Soon after starting Benadryl treatment, the consumer experienced several side effects, including:
  • Suicidal Ideation
  • Hallucination
  • Psychiatric Symptom
  • Mania
  • Abdominal Pain Upper
  • Constipation
  • Headache
. Concurrently used drugs: NA.The patient was hospitalized. This finding indicates that some patients can be more vulnerable to developing Benadryl side effects, such as Headache.
Headache, Tachycardia, Soft Tissue Inflammation, Diarrhoea, Ileus, Pneumonia, Depression, Osteopenia, Blood Magnesium Decreased

A female patient from UNITED STATES was prescribed and started Benadryl ^pfizer Warner-lambert^ on Jun 22, 2012. Patient felt the following Benadryl side effects: headache, tachycardia, soft tissue inflammation, diarrhoea, ileus, pneumonia, depression, osteopenia, blood magnesium decreased Additional patient health information: Female , weighting 111.0 lb, The consumer reported the following symptoms: . Benadryl ^pfizer Warner-lambert^ dosage: NA. Concurrently used drugs:
  • Tagamet
  • Morphine Sulfate
  • Taxol
  • Uro-mag
  • Calcium With Vitamin D
  • Prozac
  • Potassium Chloride
  • Temazepam
The patient was hospitalized.
Nausea, Headache, Muscle Twitching, Glossodynia, Restlessness, Pruritus

This report suggests a potential Benadryl Headache side effect(s) that can have serious consequences. A 62-year-old female patient from UNITED STATES (weight:NA) was diagnosed with the following health condition(s): arthropod sting and used Benadryl (dosage: 1 Po) starting Jun 11, 2012. Soon after starting Benadryl the patient began experiencing various side effects, including:
  • Nausea
  • Headache
  • Muscle Twitching
  • Glossodynia
  • Restlessness
  • Pruritus
Drugs used concurrently:NA. The patient was hospitalized. Although Benadryl demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Headache, may still occur.
Crohn's Disease, Vomiting, White Blood Cell Count Increased, Loss Of Consciousness, Road Traffic Accident, Nausea, Dehydration, Headache

An adverse event was reported by a health professional on May 07, 2012 by a male taking Benadryl (dosage: NA) . Location: CANADA , weighting 240.3 lb, patient began experiencing various side effects, including: Directly after treatment started, patient experienced the unwanted or unexpected Benadryl side effects: crohn's disease, vomiting, white blood cell count increased, loss of consciousness, road traffic accident, nausea, dehydration, headache. Additional medications/treatments:
Associated medications used:
  • Remicade (Loding Dose 2)
  • Remicade (First Infusion)
  • Remicade
  • Tylenol (caplet)
  • Hydrocortisone
The patient was hospitalized.
Soft Tissue Inflammation, Osteomyelitis, Oral Disorder, Orthostatic Hypotension, Headache, Osteonecrosis Of Jaw, Nausea, Small Intestinal Obstruction, Ileus

This Headache problem was reported by a health professional from UNITED STATES. A female patient (weight: NA) was diagnosed with the following medical condition(s): NA.On Oct 01, 2003 a consumer started treatment with Benadryl ^pfizer Warner-lambert^ (dosage: NA). The following drugs/medications were being taken at the same time:
  • Potassium Chloride
  • Temazepam
  • Morphine Sulfate
  • Tagamet
  • Calcium With Vitamin D
  • Sorbitol 50pc Inj
  • Amitriptyline Hcl
  • Herceptin
When commencing Benadryl ^pfizer Warner-lambert^, the patient experienced the following unwanted symptoms /side effects:
  • Soft Tissue Inflammation
  • Osteomyelitis
  • Oral Disorder
  • Orthostatic Hypotension
  • Headache
  • Osteonecrosis Of Jaw
  • Nausea
  • Small Intestinal Obstruction
  • Ileus
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 Headache, may become evident only after a product is in use by the general population.
Chills, Paraesthesia, Infusion Related Reaction, Tremor, Hypoaesthesia, Chest Pain, Muscle Spasms, Fatigue, Headache

This is a Benadryl side effect report of a 33-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 Jun 27, 2011. Concurrently used drugs:
  • Tysabri
  • Pepcid
  • Hydrocortisone
Soon after that, the consumer experienced the following of symptoms:
  • Chills
  • Paraesthesia
  • Infusion Related Reaction
  • Tremor
  • Hypoaesthesia
  • Chest Pain
  • Muscle Spasms
  • Fatigue
  • Headache
This opens a possibility that Benadryl could cause Headache and that some female patients may be more susceptible.
Pain, Chills, Rash Erythematous, Headache, Face Oedema, Flushing, Pyrexia

This Headache side effect was reported by a physician from UNITED STATES on Jun 26, 2009. A female patient from UNITED STATES , weighting 170.2 lb, was treated with Benadryl. Directly after treatment started, patient experienced the unwanted or unexpected Benadryl side effects: pain, chills, rash erythematous, headache, face oedema, flushing, pyrexia. Benadryl dosage: NA.
Associated medications used:
  • Rituxan (66.6667 Milligram;)
  • Decadron
  • Tylenol (caplet)
  • Pepcid
  • Aloxi
  • Treanda
These side effects may potentially be related to Benadryl.
Headache, Feeling Abnormal, Emotional Disorder

This Headache side effect was reported by a consumer or non-health professional from UNITED STATES. A female patient (weight:NA) experienced the following symptoms/conditions: seasonal allergy,depression,pain. The patient was prescribed Benadryl (dosage: Unk), which was started on Jan 01, 2011. Concurrently used drugs:
  • Effexor Xr (150 Mg, 1x/day)
  • Naproxen (Unk)
  • Effexor Xr (Unk)
  • Naproxen
When starting to take Benadryl the consumer reported the following symptoms:
  • Headache
  • Feeling Abnormal
  • Emotional Disorder
These side effects may potentially be related to Benadryl.
Headache, Pollakiuria, Swollen Tongue, Nausea, Dry Mouth, Cough

This Headache Benadryl ^ache^ (ammonium Chloride, Diphenhydramine Hydrochloride, Men side effect was reported by a physician from UNITED STATES on Sep 02, 2009. A Female , 75 years of age, weighting 147.9 lb, was treated with Benadryl ^ache^ (ammonium Chloride, Diphenhydramine Hydrochloride, Men. The patient presented the following health conditions:
  • Headache
  • Pollakiuria
  • Swollen Tongue
  • Nausea
  • Dry Mouth
  • Cough
. Benadryl ^ache^ (ammonium Chloride, Diphenhydramine Hydrochloride, Men dosage: NA. Additional drugs used at the same time:
  • Zantac
  • Elavil
  • Tekturna (150 Mg, Qd, Oral)
  • Prilosec
Pain, Nausea, Vomiting, Asthenia, Muscle Spasms, Loss Of Consciousness, Hallucination, Headache, Feeling Of Body Temperature Change

This is a Benadryl side effect report of a 60-year-old female patient (weight:NA) from UNITED STATES, suffering from the following symptoms/conditions: sinus disorder,gastrooesophageal reflux disease,hypertension,arthritis, who was treated with Benadryl (dosage:Two Liquigels, start time: Jan 30, 2012), combined with:
  • Nexium
  • Benazepril Hydrochloride
  • Tramadol Hcl (Up To Four Times Daily.)
  • Triamterene And Hydrochlorothiazide (37.5 Mg / 25 Mg)
  • Ranitidine
  • Levoxyl (0.137 Mcg)
, and developed a serious reaction and a Headache side effect. The patient presented with:
  • Pain
  • Nausea
  • Vomiting
  • Asthenia
  • Muscle Spasms
  • Loss Of Consciousness
  • Hallucination
  • Headache
  • Feeling Of Body Temperature Change
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 sinus disorder,gastrooesophageal reflux disease,hypertension,arthritis, resulting in Headache.
Pyrexia, Headache, Sinusitis

A female patient (weight: NA) from UNITED STATES with the following symptoms: NA started Benadryl treatment (dosage: NA) on Jul 01, 2011. Soon after starting Benadryl treatment, the consumer experienced several side effects, including:
  • Pyrexia
  • Headache
  • Sinusitis
. Concurrently used drugs:
  • Remicade
  • Tylenol
  • Elavil
This finding indicates that some patients can be more vulnerable to developing Benadryl side effects, such as Headache.
Rash, Scab, Oral Herpes, Headache, Asthenia, Paraesthesia, Pain, Dizziness, Dyspnoea

A female patient from UNITED STATES was prescribed and started Benadryl ^ache^ (ammonium Chloride, Diphenhydramine Hydrochloride,ment on Jan 03, 2011. After Benadryl was administered, patient encountered several Benadryl side effects: rash, scab, oral herpes, headache, asthenia, paraesthesia, pain, dizziness, dyspnoea Additional patient health information: Female , 64 years of age, The consumer reported the following symptoms: . Benadryl ^ache^ (ammonium Chloride, Diphenhydramine Hydrochloride,ment dosage: NA. Concurrently used drugs:
  • Gammagard
  • Acetaminophen
  • Extavia (0.062 Mg, Qod, Subcutaneous)
Paraesthesia, Dizziness, Diarrhoea, Pain, Dyspnoea, Rash, Scab, Headache, Influenza Like Illness

This report suggests a potential Benadryl ^ache^ (ammonium Chloride, Diphenhydramine Hydrochloride, Men Headache side effect(s) that can have serious consequences. A 64-year-old female patient from UNITED STATES (weight:NA) was diagnosed with the following health condition(s): NA and used Benadryl ^ache^ (ammonium Chloride, Diphenhydramine Hydrochloride, Men (dosage: NA) starting Dec 31, 2010. Soon after starting Benadryl ^ache^ (ammonium Chloride, Diphenhydramine Hydrochloride, Men the patient began experiencing various side effects, including:
  • Paraesthesia
  • Dizziness
  • Diarrhoea
  • Pain
  • Dyspnoea
  • Rash
  • Scab
  • Headache
  • Influenza Like Illness
Drugs used concurrently:
  • Gammagard
  • Extavia (0.062 Mg, Qod, Subcutaneous)
  • Acetaminophen
Although Benadryl ^ache^ (ammonium Chloride, Diphenhydramine Hydrochloride, Men demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Headache, may still occur.
Headache

An adverse event was reported by a consumer or non-health professional on Mar 19, 2012 by a male taking Benadryl (dosage: NA) . Location: UNITED STATES , 56 years of age, patient began experiencing various side effects, including: Patient felt the following Benadryl side effects: headache. Additional medications/treatments:
Multiple prescriptions taken:
  • Tramadol Hcl
  • Vicodin
  • Omeprazole
  • Levitra (10 Mg, Unk)
  • Tegretol
  • Combivent
Headache, Pyrexia, Chills, Blood Lactate Dehydrogenase Increased, Nausea, Haemoglobin Decreased, Laboratory Test Interference, Haemolysis

This Headache problem was reported by a physician from UNITED STATES. A female patient (weight: NA) was diagnosed with the following medical condition(s): NA.On Jan 12, 2012 a consumer started treatment with Benadryl ( To Not Continuing) (dosage: NA). The following drugs/medications were being taken at the same time:
  • Tylenol ( To Not Continuing)
  • Hydrocortisone ( To Not Continuing)
  • Winrho Sdf ((53.72 Ug/kg Total Intravenous (not Otherwise Specified))
When commencing Benadryl ( To Not Continuing), the patient experienced the following unwanted symptoms /side effects:
  • Headache
  • Pyrexia
  • Chills
  • Blood Lactate Dehydrogenase Increased
  • Nausea
  • Haemoglobin Decreased
  • Laboratory Test Interference
  • Haemolysis
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 Headache, may become evident only after a product is in use by the general population.
Headache, Hypersensitivity, Impaired Work Ability, Nausea, Cough, Malaise, Pyrexia, Chest Discomfort, Urticaria

This is a Benadryl side effect report of a 7-year-old patient (weight: NA) from UNITED STATES. The patient developed the following symptoms/conditions: NA and was treated with Benadryl (dosage: NA) starting NS. Concurrently used drugs: NA. Soon after that, the consumer experienced the following of symptoms:
  • Headache
  • Hypersensitivity
  • Impaired Work Ability
  • Nausea
  • Cough
  • Malaise
  • Pyrexia
  • Chest Discomfort
  • Urticaria
This opens a possibility that Benadryl could cause Headache and that some patients may be more susceptible.
Multiple Sclerosis Relapse, Cognitive Disorder, Anxiety, Blood Glucose Increased, Dizziness, Blood Pressure Increased, Muscle Rigidity, Headache

This Headache side effect was reported by a health professional from UNITED STATES on Jan 04, 2012. A female patient from UNITED STATES , 47 years of age, was treated with Benadryl. Patient felt the following Benadryl side effects: multiple sclerosis relapse, cognitive disorder, anxiety, blood glucose increased, dizziness, blood pressure increased, muscle rigidity, headache. Benadryl dosage: NA.
Multiple prescriptions taken:
  • Acetaminophen
  • Tysabri
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 Headache Causes and Reviews


Almost everyone has had a Headache. Headache is the most common form of pain. It's a major reason people miss days at work or school or visit the doctor.

The most common type of Headache is a tension Headache. Tension Headaches are due to tight muscles in your shoulders, neck, scalp and jaw. They are often related to stress, depression or anxiety. You are more likely to get tension Headaches if you work too much, don't get enough sleep, miss meals, or use alcohol.

Other common types of Headaches include migraines, cluster Headaches, and sinus Headaches. Most people can feel much better by making lifestyle changes, learning ways to relax and taking pain relievers.

Not all Headaches require a doctor's attention. But sometimes Headaches warn of a more serious disorder. Let your health care provider know if you have sudden, severe Headaches. Get medical help right away if you have a Headache after a blow to your head, or if you have a Headache along with a stiff neck, fever, confusion, loss of consciousness, or pain in the eye or ear.

NIH: National Institute of Neurological Disorders and Stroke


Benadryl Headache 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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