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Benadryl Pyrexia Side Effects

Benadryl Pyrexia Side Effect Reports


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

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



Hypersensitivity, Loss Of Consciousness, Pyrexia

This Pyrexia side effect was reported by a consumer or non-health professional from CA. A 29-year-old patient (weight:NA) experienced the following symptoms/conditions: NA. The patient was prescribed Benadryl (dosage: NA), which was started on NS. Concurrently used drugs: NA. When starting to take Benadryl the consumer reported the following symptoms:
  • Hypersensitivity
  • Loss Of Consciousness
  • Pyrexia
The patient was hospitalized. These side effects may potentially be related to Benadryl.
Respiratory Arrest, Dizziness, Pyrexia

This Pyrexia Benadryl side effect was reported by a physician from UNITED STATES on May 04, 2012. A Female , weighting 134.9 lb, was treated with Benadryl. The patient presented the following health conditions:
  • Respiratory Arrest
  • Dizziness
  • Pyrexia
. Benadryl dosage: NA. Additional drugs used at the same time: NA.
Pain, Chills, Rash Erythematous, Headache, Face Oedema, Flushing, Pyrexia

This is a Benadryl side effect report of a female patient (weight:NA) from UNITED STATES, suffering from the following symptoms/conditions: NA, who was treated with Benadryl (dosage:NA, start time: Apr 27, 2009), combined with:
  • Rituxan (66.6667 Milligram;)
  • Decadron
  • Tylenol (caplet)
  • Pepcid
  • Aloxi
  • Treanda
, and developed a serious reaction and a Pyrexia side effect. The patient presented with:
  • Pain
  • Chills
  • Rash Erythematous
  • Headache
  • Face Oedema
  • Flushing
  • Pyrexia
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 Pyrexia.

Paraesthesia, Infusion Related Reaction, Pyrexia, Tremor

A patient (weight: NA) from CANADA with the following symptoms: NA started Benadryl treatment (dosage: NA) on Mar 01, 2011. Soon after starting Benadryl treatment, the consumer experienced several side effects, including:
  • Paraesthesia
  • Infusion Related Reaction
  • Pyrexia
  • Tremor
. Concurrently used drugs:
  • Remicade
This finding indicates that some patients can be more vulnerable to developing Benadryl side effects, such as Pyrexia.
Pyrexia, Sneezing, Productive Cough, Rhinorrhoea, Bacteraemia

A female patient from UNITED STATES was prescribed and started Benadryl on Apr 10, 2012. Patient felt the following Benadryl side effects: pyrexia, sneezing, productive cough, rhinorrhoea, bacteraemia Additional patient health information: Female , weighting 139.8 lb, The consumer reported the following symptoms: . Benadryl dosage: NA. Concurrently used drugs:
  • Claritin
  • Lidocaine
  • Nexium
  • Ondansetron
  • Ambien
  • Flaxseed
  • Norvasc
  • Ixempra Kit (16mg/m2 Iv D 2, 9+16)
The patient was hospitalized.
Pyrexia, Infusion Related Reaction, Loss Of Consciousness

This report suggests a potential Benadryl Pyrexia side effect(s) that can have serious consequences. A female patient from UNITED STATES (weight:NA) was diagnosed with the following health condition(s): NA and used Benadryl (dosage: NA) starting NS. Soon after starting Benadryl the patient began experiencing various side effects, including:
  • Pyrexia
  • Infusion Related Reaction
  • Loss Of Consciousness
Drugs used concurrently:
  • Prednisone
  • Remicade
Although Benadryl demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Pyrexia, may still occur.
Pyrexia, Headache, Sinusitis

An adverse event was reported by a physician on Mar 23, 2012 by a Female taking Benadryl (dosage: NA) . Location: UNITED STATES , weighting 53.79 lb, patient began experiencing various side effects, including: Directly after treatment started, patient experienced the unwanted or unexpected Benadryl side effects: pyrexia, headache, sinusitis. Additional medications/treatments:
Associated medications used:
  • Remicade
  • Tylenol
  • Elavil
Pyrexia, Injection Site Discharge, Injection Site Swelling, Injection Site Haematoma, Depression, Anxiety, Pain, Injection Site Dryness, Chills

This Pyrexia problem was reported by a physician from UNITED STATES. A 49-year-old female patient (weight: NA) was diagnosed with the following medical condition(s): NA.On Dec 28, 2010 a consumer started treatment with Benadryl (dosage: NA). The following drugs/medications were being taken at the same time:
  • Extavia (0.062 Mg, Qod, Subcutaneous 0.125 Mg, Qod, Subcutaneous 0.25 Mg, Qod, Subcutaneous)
  • Extavia (0.062 Mg, Qod, Subcutaneous 0.125 Mg, Qod, Subcutaneous 0.25 Mg, Qod, Subcutaneous)
  • Extavia (0.062 Mg, Qod, Subcutaneous 0.125 Mg, Qod, Subcutaneous 0.25 Mg, Qod, Subcutaneous)
  • Lisinopril
  • Acetaminophen
  • Tizanidine Hcl
  • Metformin Hcl
  • Synthroid
When commencing Benadryl, the patient experienced the following unwanted symptoms /side effects:
  • Pyrexia
  • Injection Site Discharge
  • Injection Site Swelling
  • Injection Site Haematoma
  • Depression
  • Anxiety
  • Pain
  • Injection Site Dryness
  • Chills
Although all drugs are carefully tested before they are licensed for use, they carry potential side effect risks. Some side effects, such as Pyrexia, may become evident only after a product is in use by the general population.
Chills, Chest Pain, Pyrexia, Tremor

This is a Benadryl side effect report of a 60-year-old patient (weight: NA) from UNITED STATES. The patient developed the following symptoms/conditions: NA and was treated with Benadryl (dosage: NA) starting Jan 21, 2011. Concurrently used drugs:
  • Erbitux (Received 100cc Of Infusion)
Soon after that, the consumer experienced the following of symptoms:
  • Chills
  • Chest Pain
  • Pyrexia
  • Tremor
This opens a possibility that Benadryl could cause Pyrexia and that some patients may be more susceptible.
Dyspnoea, Blood Pressure Increased, Pyrexia, Tachycardia, Oxygen Saturation Decreased

This Pyrexia side effect was reported by a health professional from UNITED STATES on Sep 23, 2011. A patient from UNITED STATES , 78 years of age, was treated with Benadryl. Directly after treatment started, patient experienced the unwanted or unexpected Benadryl side effects: dyspnoea, blood pressure increased, pyrexia, tachycardia, oxygen saturation decreased. Benadryl dosage: NA.
Associated medications used:
  • Erbitux (Continued On Treatment 250 Mg/m2 After 1 Week.)
These side effects may potentially be related to Benadryl.
Mechanical Ventilation, Renal Failure, Acidosis, Oliguria, Pyrexia, Arrhythmia, Ascites, Terminal State

This Pyrexia side effect was reported by a consumer or non-health professional from UNITED STATES. A patient (weight:NA) experienced the following symptoms/conditions: NA. The patient was prescribed Benadryl (dosage: NA), which was started on May 26, 2006. Concurrently used drugs:
  • Centrum /02267801/
  • Coreg
  • Lasix
  • Lovaza
  • Tylenol
  • Reglan
  • Temazepam
  • Zocor
When starting to take Benadryl the consumer reported the following symptoms:
  • Mechanical Ventilation
  • Renal Failure
  • Acidosis
  • Oliguria
  • Pyrexia
  • Arrhythmia
  • Ascites
  • Terminal State
The patient was hospitalized. These side effects may potentially be related to Benadryl.
Headache, Pyrexia, Chills, Blood Lactate Dehydrogenase Increased, Nausea, Haemoglobin Decreased, Laboratory Test Interference, Haemolysis

This Pyrexia Benadryl ( To Not Continuing) side effect was reported by a physician from UNITED STATES on Feb 06, 2012. A Female , weighting 307.8 lb, was treated with Benadryl ( To Not Continuing). The patient presented the following health conditions:
  • Headache
  • Pyrexia
  • Chills
  • Blood Lactate Dehydrogenase Increased
  • Nausea
  • Haemoglobin Decreased
  • Laboratory Test Interference
  • Haemolysis
. Benadryl ( To Not Continuing) dosage: NA. Additional drugs used at the same time:
  • Tylenol ( To Not Continuing)
  • Hydrocortisone ( To Not Continuing)
  • Winrho Sdf ((53.72 Ug/kg Total Intravenous (not Otherwise Specified))
The patient was hospitalized.
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, 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 Pyrexia side effect. The patient presented with:
  • Headache
  • Hypersensitivity
  • Impaired Work Ability
  • Nausea
  • Cough
  • Malaise
  • Pyrexia
  • Chest Discomfort
  • Urticaria
which developed after the beginning of treatment. This side effect report can indicate a possible existence of increased vulnerability to Benadryl treatment in patients suffering from NA, resulting in Pyrexia.
Logorrhoea, Hallucination, Visual, Pyrexia, Mydriasis, Abasia, Toxicity To Various Agents

A patient (weight: NA) from UNITED STATES with the following symptoms: sinus congestion,multiple allergies,upper respiratory tract congestion,rhinorrhoea,ill-defined disorder,sneezing started Benadryl D Solution treatment (dosage: NA) on Feb 02, 2006. Soon after starting Benadryl D Solution treatment, the consumer experienced several side effects, including:
  • Logorrhoea
  • Hallucination, Visual
  • Pyrexia
  • Mydriasis
  • Abasia
  • Toxicity To Various Agents
. Concurrently used drugs: NA.The patient was hospitalized. This finding indicates that some patients can be more vulnerable to developing Benadryl D Solution side effects, such as Pyrexia.
Pyrexia, Rash, Disease Progression, Infusion Site Extravasation

A patient from UNITED STATES was prescribed and started Benadryl on Dec 09, 2011. After Benadryl was administered, patient encountered several Benadryl side effects: pyrexia, rash, disease progression, infusion site extravasation Additional patient health information: male , weighting 184.2 lb, The consumer reported the following symptoms: . Benadryl dosage: NA. Concurrently used drugs:
  • Lortab
  • Ambien (10 Milligram)
  • Istodax
  • Morphine
Eosinophilia, Nausea, Rash, Vomiting, Pyrexia

This report suggests a potential Benadryl Pyrexia side effect(s) that can have serious consequences. A 28-year-old female patient from CANADA (weight:NA) was diagnosed with the following health condition(s): NA and used Benadryl (dosage: NA) starting NS. Soon after starting Benadryl the patient began experiencing various side effects, including:
  • Eosinophilia
  • Nausea
  • Rash
  • Vomiting
  • Pyrexia
Drugs used concurrently:
  • Vancomycin Hcl (1.5 Gram, 1 Every 8 Hours Intravenous (not Otherwise Specified))
The patient was hospitalized. Although Benadryl demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Pyrexia, may still occur.
Febrile Neutropenia, Pneumonia, Pyrexia, Cytomegalovirus Viraemia, Haemolysis, Retinitis, Blood Lactate Dehydrogenase Increased

An adverse event was reported by a physician on Nov 11, 2011 by a Female taking Benadryl Hcl (dosage: 30 Mg, Unk) . Location: JAPAN , weighting 121.3 lb, patient began experiencing various side effects, including: Patient felt the following Benadryl side effects: febrile neutropenia, pneumonia, pyrexia, cytomegalovirus viraemia, haemolysis, retinitis, blood lactate dehydrogenase increased. Additional medications/treatments:
Multiple prescriptions taken:
  • Acetaminophen
  • Thymoglobulin (122.5 Mg, Qd)
  • Cyclosporine (.5 Mg/kg, Unk)
  • Meropenem (Unk)
  • Prednisolone (50 Mg, Unk)
  • Fluconazole (Unk)
  • Sulfamethoxazole W (Unk)
  • Acetaminophen (400 Mg, Unk)
The patient was hospitalized and became disabled.
Oedema, Urinary Tract Infection, Tachycardia, Pyrexia, Hypoxia, Multi-organ Failure, Sepsis, Dyspnoea, Pneumonia

This Pyrexia problem was reported by a health professional from UNITED STATES. A female patient (weight: NA) was diagnosed with the following medical condition(s): swollen tongue.On Dec 23, 2010 a consumer started treatment with Benadryl (dosage: NA). The following drugs/medications were being taken at the same time:
  • Duoneb
  • Afinitor
  • Protonix
  • Paclitaxel (142 Mg)
  • Metoprolol Tartrate
  • Carboplatin
  • Vancomycin (1 G, Every 12 Hours)
  • Xanax
When commencing Benadryl, the patient experienced the following unwanted symptoms /side effects:
  • Oedema
  • Urinary Tract Infection
  • Tachycardia
  • Pyrexia
  • Hypoxia
  • Multi-organ Failure
  • Sepsis
  • Dyspnoea
  • Pneumonia
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 Pyrexia, may become evident only after a product is in use by the general population.
Oedema, Anaemia, Dyspnoea, Escherichia Infection, Renal Failure Acute, Tachycardia, Hypoxia, Pneumonia, Pyrexia

This is a Benadryl side effect report of a female patient (weight: NA) from UNITED STATES. The patient developed the following symptoms/conditions: swollen tongue and was treated with Benadryl (dosage: NA) starting Dec 23, 2010. Concurrently used drugs:
  • Metoprolol
  • Protonix
  • Afinitor
  • Vancomycin (1 G, Every 12 Hours)
  • Xanax
  • Paclitaxel (142 Mg)
  • Carboplatin
  • Vicodin
Soon after that, the consumer experienced the following of symptoms:
  • Oedema
  • Anaemia
  • Dyspnoea
  • Escherichia Infection
  • Renal Failure Acute
  • Tachycardia
  • Hypoxia
  • Pneumonia
  • Pyrexia
The patient was hospitalized. This opens a possibility that Benadryl could cause Pyrexia and that some female patients may be more susceptible.
Pyrexia, Off Label Use, Dyspnoea

This Pyrexia side effect was reported by a consumer or non-health professional from UNITED STATES on Mar 22, 2011. A patient from UNITED STATES , child 8 years of age, was diagnosed with and was treated with Benadryl. Patient felt the following Benadryl side effects: pyrexia, off label use, dyspnoea. Benadryl dosage: NA. These side effects may potentially be related to Benadryl.

DISCLAIMER: ALL DATA PROVIDED AS-IS, refer to terms of use for additional information.

Benadryl Pyrexia Causes and Reviews


A fever is a body temperature that is higher than normal. A normal temperature can vary from person to person, but it is usually around 98.6 F. A fever is not a disease. It is usually a sign that your body is trying to fight an illness or infection.

Infections cause most fevers. You get a fever because your body is trying to kill the virus or bacteria that caused the infection. Most of those bacteria and viruses do well when your body is at your normal temperature. But if you have a fever, it is harder for them to survive. Fever also activates your body's immune system.

Other causes of fevers include

  • Medicines, including some antibiotics, blood pressure medicines, and anti-seizure medicines
  • Heat illness
  • Cancers
  • Autoimmune diseases
  • Some childhood immunizations

Treatment depends on the cause of your fever. If the fever is very high, your health care provider may recommend taking an over-the-counter medicine such as acetaminophen or ibuprofen. Adults can also take aspirin, but children with fevers should not take aspirin. It is also important to drink enough liquids, to prevent dehydration.


Benadryl Pyrexia 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 (142)
Hypersensitivity (139)
Urticaria (126)
Somnolence (119)
Vomiting (116)
Loss Of Consciousness (113)
Rash (110)
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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