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Benadryl Flushing Side Effect Reports


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

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


Feeling Abnormal, Flushing

This Flushing side effect was reported by a health professional from US. A 43-year-old female patient (weight:NA) experienced the following symptoms/conditions: systemic lupus erythematosus. The patient was prescribed Benadryl (dosage: NA), which was started on NS. Concurrently used drugs:
  • Claritin
When starting to take Benadryl the consumer reported the following symptoms:
  • Feeling Abnormal
  • Flushing
These side effects may potentially be related to Benadryl.
Pain, Chills, Rash Erythematous, Headache, Face Oedema, Flushing, Pyrexia

This Flushing Benadryl side effect was reported by a physician from UNITED STATES on Jun 26, 2009. A Female , weighting 170.2 lb, was treated with Benadryl. The patient presented the following health conditions:
  • Pain
  • Chills
  • Rash Erythematous
  • Headache
  • Face Oedema
  • Flushing
  • Pyrexia
. Benadryl dosage: NA. Additional drugs used at the same time:
  • Rituxan (66.6667 Milligram;)
  • Decadron
  • Tylenol (caplet)
  • Pepcid
  • Aloxi
  • Treanda
Flushing, Chest Discomfort, Feeling Hot, Infusion Related Reaction, Throat Tightness, Cyanosis

This is a Benadryl side effect report of a female patient (weight:NA) from CANADA, suffering from the following symptoms/conditions: NA, who was treated with Benadryl (dosage:NA, start time: Oct 11, 2011), combined with:
  • Remicade
  • Remicade
  • Hydrocortisone
, and developed a serious reaction and a Flushing side effect. The patient presented with:
  • Flushing
  • Chest Discomfort
  • Feeling Hot
  • Infusion Related Reaction
  • Throat Tightness
  • Cyanosis
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 Flushing.
Chest Pain, Flushing, Dizziness, Feeling Hot

A 81-year-old patient (weight: NA) from UNITED STATES with the following symptoms: NA started Benadryl treatment (dosage: NA) on Nov 09, 2011. Soon after starting Benadryl treatment, the consumer experienced several side effects, including:
  • Chest Pain
  • Flushing
  • Dizziness
  • Feeling Hot
. Concurrently used drugs:
  • Erbitux (Duration 15 Min)
  • Dexamethasone
  • Zofran
This finding indicates that some patients can be more vulnerable to developing Benadryl side effects, such as Flushing.
Pruritus, Oedema Peripheral, Flushing, Eyelid Oedema, Swelling Face, Nausea

A female patient from CANADA was prescribed and started Benadryl on Jan 31, 2012. Patient felt the following Benadryl side effects: pruritus, oedema peripheral, flushing, eyelid oedema, swelling face, nausea Additional patient health information: Female , 34 years of age, The consumer reported the following symptoms: . Benadryl dosage: NA. Concurrently used drugs:
  • Remicade
  • Methylprednisolone Sodium Succinate (Unk Ukn, Unk)
  • Methylprednisolone (100 Mg, Unk)
Nausea, Flushing, Pruritus

This report suggests a potential Benadryl Flushing side effect(s) that can have serious consequences. A 62-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:
  • Nausea
  • Flushing
  • Pruritus
Drugs used concurrently:
  • Carboplatin (632.0mg, 1 Every 3 Weeks)
  • Zofran
  • (dexamethasone)
Although Benadryl demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Flushing, may still occur.
Oxygen Saturation Decreased, Rash Erythematous, Flushing

An adverse event was reported by a health professional on Aug 12, 2011 by a Female taking Benadryl (dosage: NA) . Location: CANADA , 79 years of age, weighting 112.4 lb, patient began experiencing various side effects, including: Directly after treatment started, patient experienced the unwanted or unexpected Benadryl side effects: oxygen saturation decreased, rash erythematous, flushing. Additional medications/treatments:
Associated medications used:
  • Dexamethasone
  • Carboplatin (See Image)
  • Zofran
Nightmare, Gastric Disorder, Flushing, Nausea

This Flushing problem was reported by a consumer or non-health professional from UNITED STATES. A female patient (weight: NA) was diagnosed with the following medical condition(s): NA.On Jan 01, 2008 a consumer started treatment with Benadryl (dosage: NA). The following drugs/medications were being taken at the same time:
  • Potassium
  • Aspirin
  • Unithroid
  • Lopressor (1/2 Tablet Twice Daily)
  • Claritin
  • Niaspan
  • Niaspan
  • Benicar
When commencing Benadryl, the patient experienced the following unwanted symptoms /side effects:
  • Nightmare
  • Gastric Disorder
  • Flushing
  • Nausea
Although all drugs are carefully tested before they are licensed for use, they carry potential side effect risks. Some side effects, such as Flushing, may become evident only after a product is in use by the general population.
Headache, Flushing

This is a Benadryl side effect report of a female patient (weight: NA) from UNITED STATES. The patient developed the following symptoms/conditions: NA and was treated with Benadryl (dosage: NA) starting Sep 30, 2010. Concurrently used drugs:
  • Niaspan (At Bedtime)
Soon after that, the consumer experienced the following of symptoms:
  • Headache
  • Flushing
This opens a possibility that Benadryl could cause Flushing and that some female patients may be more susceptible.
Infusion Related Reaction, Flushing, Dyspnoea, Retching, Cough, Nausea, Oedema

This Flushing side effect was reported by a health professional from CANADA on Jul 04, 2011. A female patient from CANADA , weighting 132.3 lb, was treated with Benadryl. Directly after treatment started, patient experienced the unwanted or unexpected Benadryl side effects: infusion related reaction, flushing, dyspnoea, retching, cough, nausea, oedema. Benadryl dosage: NA.
Associated medications used:
  • Remicade
  • Remicade
  • Solu-cortef
These side effects may potentially be related to Benadryl.
Musculoskeletal Pain, Flushing, Malaise, Asthenia, Chest Discomfort, Nausea, Infusion Related Reaction, Dizziness

This Flushing side effect was reported by a consumer or non-health professional from UNITED STATES. A 65-year-old female patient (weight:NA) experienced the following symptoms/conditions: NA. The patient was prescribed Benadryl (dosage: NA), which was started on Jun 15, 2011. Concurrently used drugs:
  • Tysabri
  • Decadron
When starting to take Benadryl the consumer reported the following symptoms:
  • Musculoskeletal Pain
  • Flushing
  • Malaise
  • Asthenia
  • Chest Discomfort
  • Nausea
  • Infusion Related Reaction
  • Dizziness
These side effects may potentially be related to Benadryl.
Back Pain, Pain In Extremity, Flushing, Infusion Related Reaction, Pruritus, Joint Contracture

This Flushing Benadryl side effect was reported by a health professional from UNITED STATES on Apr 15, 2011. A male , weighting 172.0 lb, was treated with Benadryl. The patient presented the following health conditions:
  • Back Pain
  • Pain In Extremity
  • Flushing
  • Infusion Related Reaction
  • Pruritus
  • Joint Contracture
. Benadryl dosage: NA. Additional drugs used at the same time:
  • Remicade
  • Remicade
  • Acetaminophen
  • Remicade
  • Lialda
Dyspnoea, Flushing, Chest Pain, Pain In Extremity, Heart Rate Increased, Tremor, Back Pain, Arthralgia, Blood Pressure Increased

This is a Benadryl side effect report of a 51-year-old patient (weight:NA) from CANADA, suffering from the following symptoms/conditions: NA, who was treated with Benadryl (dosage:NA, start time: NS), combined with:
  • Remicade
  • Acetaminophen
  • Remicade
  • Hydrocortisone
, and developed a serious reaction and a Flushing side effect. The patient presented with:
  • Dyspnoea
  • Flushing
  • Chest Pain
  • Pain In Extremity
  • Heart Rate Increased
  • Tremor
  • Back Pain
  • Arthralgia
  • Blood Pressure Increased
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 Flushing.
Dyspnoea, Flushing, Hypotension

A 66-year-old patient (weight: NA) from UNITED STATES with the following symptoms: NA started Benadryl treatment (dosage: NA) on Mar 26, 2010. Soon after starting Benadryl treatment, the consumer experienced several side effects, including:
  • Dyspnoea
  • Flushing
  • Hypotension
. Concurrently used drugs:
  • Folic Acid (Also On 24mar2010. Via Mediport)
  • Fluorouracil (Also On 24mar2010 Via Mediport)
  • Irinotecan Hcl (Also On 24mar2010 Via Mediport)
  • Erbitux (Daily Dose 800 Mg)
This finding indicates that some patients can be more vulnerable to developing Benadryl side effects, such as Flushing.
Chest Discomfort, Oxygen Saturation Decreased, Cough, Breath Sounds Abnormal, Flushing, Infusion Related Reaction

A patient from CANADA was prescribed and started Benadryl on Feb 23, 2011. After Benadryl was administered, patient encountered several Benadryl side effects: chest discomfort, oxygen saturation decreased, cough, breath sounds abnormal, flushing, infusion related reaction Additional patient health information: male , weighting 248.0 lb, The consumer reported the following symptoms: . Benadryl dosage: NA. Concurrently used drugs:
  • Ventolin (2 Puffs)
  • Solu-cortef
  • Remicade
  • Acetaminophen
Dyspnoea, Nausea, Anaphylactic Reaction, Vomiting, Pharyngeal Oedema, Flushing, Heart Rate Increased, Respiratory Rate Increased

This report suggests a potential Benadryl Flushing side effect(s) that can have serious consequences. A 17-year-old female patient from UNITED STATES (weight:NA) was diagnosed with the following health condition(s): NA and used Benadryl (dosage: NA) starting Nov 02, 2010. Soon after starting Benadryl the patient began experiencing various side effects, including:
  • Dyspnoea
  • Nausea
  • Anaphylactic Reaction
  • Vomiting
  • Pharyngeal Oedema
  • Flushing
  • Heart Rate Increased
  • Respiratory Rate Increased
Drugs used concurrently:
  • Tylenol-500
  • Anakinra
  • Tocilizumab (Rate Reduced To 50%; At Half The Suggested Rate.)
  • Tocilizumab (Rate Reduced To 1/10th; Form: Infusion)
  • Tocilizumab
  • Methotrexate
  • Prednisone
  • Folic Acid
The patient was hospitalized. Although Benadryl demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Flushing, may still occur.
Blood Pressure Decreased, Body Temperature Decreased, Diarrhoea, Dyspnoea, Feeling Abnormal, Flushing, Hospitalisation, Insomnia, Pain In Extremity

An adverse event was reported by a consumer or non-health professional on Oct 26, 2010 by a Female taking Benadryl (dosage: NA) . Location: UNITED STATES , weighting 250.0 lb, patient began experiencing various side effects, including: Patient felt the following Benadryl side effects: blood pressure decreased, body temperature decreased, diarrhoea, dyspnoea, feeling abnormal, flushing, hospitalisation, insomnia, pain in extremity. Additional medications/treatments:
Multiple prescriptions taken:
  • Remicade (Text:400 Mg)
  • Remicade (Text:400 Mg)
  • Remicade (Text:400 Mg)
  • Lorazepam
  • Prednisone (Text:dose Tapered 7.5mg To 5 Mg To 2.5 Mg)
  • Methotrexate (Text:20 Mg, 1 In 1 Week)
  • Hydrochlorothiazide
  • Potassium Chloride
The patient was hospitalized.
Blood Pressure Decreased, Body Temperature Decreased, Diarrhoea, Dyspnoea, Feeling Abnormal, Flushing, Hospitalisation, Insomnia, Pain In Extremity

This Flushing problem was reported by a consumer or non-health professional from UNITED STATES. A 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:
  • Remicade (Text:400 Mg)
  • Remicade (Text:400 Mg)
  • Remicade (Text:400 Mg)
  • Lorazepam
  • Prednisone (Text:dose Tapered 7.5mg To 5 Mg To 2.5 Mg)
  • Methotrexate (Text:20 Mg, 1 In 1 Week)
  • Hydrochlorothiazide
  • Potassium Chloride
When commencing Benadryl, the patient experienced the following unwanted symptoms /side effects:
  • Blood Pressure Decreased
  • Body Temperature Decreased
  • Diarrhoea
  • Dyspnoea
  • Feeling Abnormal
  • Flushing
  • Hospitalisation
  • Insomnia
  • Pain In Extremity
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 Flushing, may become evident only after a product is in use by the general population.
Blood Pressure Decreased, Depressed Level Of Consciousness, Erythema, Flushing, Unresponsive To Stimuli

This is a Benadryl side effect report of a 94-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:
  • Infed
Soon after that, the consumer experienced the following of symptoms:
  • Blood Pressure Decreased
  • Depressed Level Of Consciousness
  • Erythema
  • Flushing
  • Unresponsive To Stimuli
This opens a possibility that Benadryl could cause Flushing and that some patients may be more susceptible.
Cough, Flushing, Head Injury, Hypersensitivity, Malaise, Pyrexia, Somnolence

This Flushing side effect was reported by a consumer or non-health professional from CANADA on May 27, 2009. A patient from CANADA , weighting 41.01 lb, was diagnosed with and was treated with Benadryl. Patient felt the following Benadryl side effects: cough, flushing, head injury, hypersensitivity, malaise, pyrexia, somnolence. Benadryl dosage: Text:5 Ml Once. These side effects may potentially be related to Benadryl.

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

Benadryl Flushing Causes and Reviews


Normally, your cells grow and die in a controlled way. Cancer cells keep growing without control. Chemotherapy is drug therapy for cancer. It works by killing the cancer cells, stopping them from spreading, or slowing their growth. However, it can also harm healthy cells, which causes side effects.

You may have a lot of side effects, some, or none at all. It depends on the type and amount of chemotherapy you get and how your body reacts. Some common side effects are fatigue, nausea, vomiting, pain, and hair loss. There are ways to prevent or control some side effects. Talk with your health care provider about how to manage them. Healthy cells usually recover after chemotherapy is over, so most side effects gradually go away.

Your treatment plan will depend on the cancer type, the chemotherapy drugs used, the treatment goal, and how your body responds. Chemotherapy may be given alone or with other treatments. You may get treatment every day, every week, or every month. You may have breaks between treatments so that your body has a chance to build new healthy cells. You might take the drugs by mouth, in a shot, as a cream, or intravenously (by IV).

NIH: National Cancer Institute


Benadryl Flushing 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 (183)
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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