Benadryl Hypersensitivity Side Effect Reports


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

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


Dyspnoea, Pharyngeal Oedema, Lip Swelling, Eye Swelling, Hypersensitivity

This Hypersensitivity side effect was reported by a consumer or non-health professional from US. A 25-year-old female patient (weight:NA) experienced the following symptoms/conditions: seasonal allergy. The patient was prescribed Benadryl Allergy Kapgels (dosage: 1 Kapgel Once), which was started on NS. Concurrently used drugs: NA. When starting to take Benadryl Allergy Kapgels the consumer reported the following symptoms:
  • Dyspnoea
  • Pharyngeal Oedema
  • Lip Swelling
  • Eye Swelling
  • Hypersensitivity
These side effects may potentially be related to Benadryl Allergy Kapgels.
Dyspnoea, Chest Pain, Swelling Face, Lip Swelling, Acne, Paraesthesia Oral, Off Label Use, Hypersensitivity, Chest Discomfort

This Hypersensitivity Benadryl Allergy Ultratab side effect was reported by a consumer or non-health professional from US on Nov 20, 2013. A Female , 54 years of age, weighting 194.0 lb, was diagnosed with and was treated with Benadryl Allergy Ultratab. The patient presented the following health conditions:
  • Dyspnoea
  • Chest Pain
  • Swelling Face
  • Lip Swelling
  • Acne
  • Paraesthesia Oral
  • Off Label Use
  • Hypersensitivity
  • Chest Discomfort
. Benadryl Allergy Ultratab dosage: NA. Additional drugs used at the same time: NA. The patient was hospitalized.
Dyspnoea, Hypersensitivity

This is a Benadryl Allergy Ultratab side effect report of a 54-year-old female patient (weight:NA) from US, suffering from the following symptoms/conditions: hypersensitivity, who was treated with Benadryl Allergy Ultratab (dosage:NA, start time: NS), combined with: NA., and developed a serious reaction and a Hypersensitivity side effect. The patient presented with:
  • Dyspnoea
  • Hypersensitivity
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 Allergy Ultratab treatment in female patients suffering from hypersensitivity, resulting in Hypersensitivity.
Hypersensitivity, Swelling Face, Eye Swelling, Pruritus, Skin Exfoliation

A 55-year-old female patient (weight: NA) from US with the following symptoms: NA started Benadryl treatment (dosage: NA) on NS. Soon after starting Benadryl treatment, the consumer experienced several side effects, including:
  • Hypersensitivity
  • Swelling Face
  • Eye Swelling
  • Pruritus
  • Skin Exfoliation
. Concurrently used drugs: NA. This finding indicates that some patients can be more vulnerable to developing Benadryl side effects, such as Hypersensitivity.
Hypersensitivity, Blister, Rash, Local Swelling, Off Label Use, Therapeutic Response Unexpected, Pruritus

A patient from US was prescribed and started Benadryl on Aug 14, 2013. Patient felt the following Benadryl side effects: hypersensitivity, blister, rash, local swelling, off label use, therapeutic response unexpected, pruritus Additional patient health information: male , 55 years of age, weighting 210.0 lb, The consumer reported the following symptoms: was diagnosed with and. Benadryl dosage: A Pea Size Amount On Each Hand Twice. Concurrently used drugs: NA.
Hypersensitivity, Loss Of Consciousness, Pyrexia

This report suggests a potential Benadryl Hypersensitivity side effect(s) that can have serious consequences. A 29-year-old patient from CA (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:
  • Hypersensitivity
  • Loss Of Consciousness
  • Pyrexia
Drugs used concurrently:NA. The patient was hospitalized. Although Benadryl demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Hypersensitivity, may still occur.
Occupational Exposure To Product, Hypersensitivity

An adverse event was reported by a health professional on Feb 19, 2013 by a Female taking Benadryl (dosage: Taken At Bedtime) . Location: US , 48 years of age, patient began experiencing various side effects, including: Directly after treatment started, patient experienced the unwanted or unexpected Benadryl side effects: occupational exposure to product, hypersensitivity. Additional medications/treatments:
Associated medications used:
  • Isovue
  • Isovue
  • Claritin (Taken In The Am)
Hypersensitivity, Abdominal Pain, Diarrhoea, Pollakiuria

This Hypersensitivity problem was reported by a consumer or non-health professional from US. A 57-year-old female patient (weight: NA) was diagnosed with the following medical condition(s): NA.On NS 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:
  • Hypersensitivity
  • Abdominal Pain
  • Diarrhoea
  • Pollakiuria
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 Hypersensitivity, may become evident only after a product is in use by the general population.
Adrenal Disorder, Hypersensitivity, Pain, Malaise, Disorientation, Off Label Use, Adverse Reaction, Abdominal Pain Upper

This is a Benadryl side effect report of a patient (weight: NA) from US. The patient developed the following symptoms/conditions: NA and was treated with Benadryl (dosage: NA) starting 2011. Concurrently used drugs: NA. Soon after that, the consumer experienced the following of symptoms:
  • Adrenal Disorder
  • Hypersensitivity
  • Pain
  • Malaise
  • Disorientation
  • Off Label Use
  • Adverse Reaction
  • Abdominal Pain Upper
This opens a possibility that Benadryl could cause Hypersensitivity and that some patients may be more susceptible.
Hypersensitivity, Urticaria

This Hypersensitivity side effect was reported by a consumer or non-health professional from UNITED STATES on Jun 11, 2012. A female patient from UNITED STATES , 56 years of age, was treated with Benadryl. Directly after treatment started, patient experienced the unwanted or unexpected Benadryl side effects: hypersensitivity, urticaria. Benadryl dosage: NA.
Associated medications used:
  • Tysabri
  • Prednisone Tab
These side effects may potentially be related to Benadryl.
Urticaria, Pharyngeal Oedema, Pruritus, Nausea, Hypersensitivity

This Hypersensitivity side effect was reported by a consumer or non-health professional from UNITED STATES. A 29-year-old patient (weight:NA) experienced the following symptoms/conditions: NA. The patient was prescribed Benadryl (dosage: NA), which was started on May 06, 2009. Concurrently used drugs: NA. When starting to take Benadryl the consumer reported the following symptoms:
  • Urticaria
  • Pharyngeal Oedema
  • Pruritus
  • Nausea
  • Hypersensitivity
These side effects may potentially be related to Benadryl.
Hypersensitivity

This Hypersensitivity Benadryl side effect was reported by a physician from UNITED STATES on Aug 15, 2011. A Female , weighting 158.1 lb, was treated with Benadryl. The patient presented the following health conditions:
  • Hypersensitivity
. Benadryl dosage: NA. Additional drugs used at the same time:
  • Rituxan
  • Aranesp
  • Decadron
  • Zantac
  • Aloxi
  • Treanda
  • Tylenol (caplet)
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, suffering from the following symptoms/conditions: rash, who was treated with Benadryl Regular Strength Allergy (dosage:Upc :060093265717, start time: Apr 23, 2012), combined with: NA., and developed a serious reaction and a Hypersensitivity side effect. The patient presented with:
  • Loss Of Consciousness
  • Hypersensitivity
  • Off Label Use
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 Regular Strength Allergy treatment in patients suffering from rash, resulting in Hypersensitivity.
Hypersensitivity, Injection Site Haematoma, Injection Site Reaction, Injection Site Pain, Injection Site Swelling

A 54-year-old female patient (weight: NA) from UNITED STATES with the following symptoms: NA started Benadryl treatment (dosage: 25 Mg, 8-6 Degree Prn) on Apr 03, 2012. Soon after starting Benadryl treatment, the consumer experienced several side effects, including:
  • Hypersensitivity
  • Injection Site Haematoma
  • Injection Site Reaction
  • Injection Site Pain
  • Injection Site Swelling
. Concurrently used drugs:
  • Meloxicam (15 Mg, Qd)
  • Enbrel (50 Mg, 2 Times/wk)
  • Paxil (10 Mg, Qd)
  • Clobetasol Propionate (0.05 %, Bid)
  • Enbrel
  • Hydrochlorothiazide (37.5 -25 Mg, Qd, 1/2 Tab)
This finding indicates that some patients can be more vulnerable to developing Benadryl side effects, such as Hypersensitivity.
Hypersensitivity, Application Site Dryness, Cardiovascular Insufficiency, Application Site Pain

A female patient from CANADA was prescribed and started Benadryl on Apr 18, 2012. After Benadryl was administered, patient encountered several Benadryl side effects: hypersensitivity, application site dryness, cardiovascular insufficiency, application site pain Additional patient health information: Female , 47 years of age, weighting 180.0 lb, The consumer reported the following symptoms: was diagnosed with and. Benadryl dosage: ^about Half Of The Bottle^ About Three Times A Day. Concurrently used drugs: NA.
Application Site Pain, Hypersensitivity, Cardiovascular Insufficiency, Application Site Dryness

This report suggests a potential Benadryl Hypersensitivity side effect(s) that can have serious consequences. A 47-year-old female patient from CANADA (weight:NA) was diagnosed with the following health condition(s): pruritus and used Benadryl (dosage: ^about Half Of The Bottle^ About Three Times A Day) starting Mar 14, 2012. Soon after starting Benadryl the patient began experiencing various side effects, including:
  • Application Site Pain
  • Hypersensitivity
  • Cardiovascular Insufficiency
  • Application Site Dryness
Drugs used concurrently:NA. Although Benadryl demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Hypersensitivity, may still occur.
Hypersensitivity

An adverse event was reported by a health professional on May 09, 2011 by a Female taking Benadryl (dosage: NA) . Location: UNITED STATES , 51 years of age, patient began experiencing various side effects, including: Patient felt the following Benadryl side effects: hypersensitivity. Additional medications/treatments:
Multiple prescriptions taken:
  • Albuterol
  • Pepcid
  • Erbitux (First Dose Of 800mg Erbitux Infusion,there After 500mg Weekly.)
Anxiety, Hypersensitivity

This Hypersensitivity problem was reported by a consumer or non-health professional from UNITED STATES. A 41-year-old female patient (weight: NA) was diagnosed with the following medical condition(s): NA.On Jan 01, 2012 a consumer started treatment with Benadryl (dosage: NA). The following drugs/medications were being taken at the same time:
  • Allegra
When commencing Benadryl, the patient experienced the following unwanted symptoms /side effects:
  • Anxiety
  • Hypersensitivity
Although all drugs are carefully tested before they are licensed for use, they carry potential side effect risks. Some side effects, such as Hypersensitivity, may become evident only after a product is in use by the general population.
Hypersensitivity

This is a Benadryl side effect report of a 38-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 Feb 15, 2012. Concurrently used drugs:
  • Tysabri
  • Saline
Soon after that, the consumer experienced the following of symptoms:
  • Hypersensitivity
This opens a possibility that Benadryl could cause Hypersensitivity and that some female patients may be more susceptible.
Pruritus, Arthralgia, Hypersensitivity, Skin Burning Sensation, Myalgia, Pain, Hypersomnia

This Hypersensitivity side effect was reported by a consumer or non-health professional from UNITED STATES on Feb 27, 2012. A female patient from UNITED STATES , weighting 193.0 lb, was treated with Benadryl. Patient felt the following Benadryl side effects: pruritus, arthralgia, hypersensitivity, skin burning sensation, myalgia, pain, hypersomnia. Benadryl dosage: 25 Mg, Unk.
Multiple prescriptions taken:
  • Bisoprolol Fumarate And Hydrochlorothiazide (5/6.25mg, Daily)
  • Metformin (1000 Mg, 2x/day)
  • Ultram Er (100 Mg, 2x/day)
  • Glimepiride (2 Mg, Daily)
  • Lyrica (150 Mg, 2x/day)
  • Levothyroxine (175 Ug, Daily)
  • Aldactone (25 Mg, Daily)
  • Codeine Sulfate (Unk)
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 Hypersensitivity Causes and Reviews


An allergy is a reaction by your immune system to something that does not bother most other people. People who have allergies often are sensitive to more than one thing. Substances that often cause reactions are

  • Pollen
  • Dust mites
  • Mold spores
  • Pet dander
  • Food
  • Insect stings
  • Medicines

Normally, your immune system fights germs. It is your body's defense system. In most allergic reactions, however, it is responding to a false alarm. Genes and the environment probably both play a role.

Allergies can cause a variety of symptoms such as a runny nose, sneezing, itching, rashes, swelling, or asthma. Allergies can range from minor to severe. Anaphylaxis is a severe reaction that can be life-threatening. Doctors use skin and blood tests to diagnose allergies. Treatments include medicines, allergy shots, and avoiding the substances that cause the reactions.

NIH: National Institute of Allergy and Infectious Diseases


Benadryl Hypersensitivity 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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