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Benadryl and Metronidazole

Compare Side Effects

% of total side effects reported by users. DISCLAIMER: ALL DATA PROVIDED AS-IS. Data Source: openfda.gov.
Side EffectBenadrylMetronidazole
NAUSEA3.7% 3.4%
DIARRHOEA2.1% 3.4%
DYSPNOEA3.3% 2%
FATIGUE3.3% 1.7%
PYREXIA1.8% 2.7%
VOMITING2.4% 2.6%
HEADACHE2.6% 2.3%
PRURITUS2.5% 1.2%
PAIN2.3% 2.4%
RASH2.4% 1.5%
INFUSION RELATED REACTION2.3% 0%
DIZZINESS1.9% 2.2%
DRUG INEFFECTIVE2% 2%
OFF LABEL USE2% 0.6%
ABDOMINAL PAIN1.1% 1.9%
URTICARIA1.9% 0.7%
DEATH1.8% 0.9%
DRUG INTERACTION0% 1.8%
ASTHENIA1.6% 1.6%
ANXIETY1.4% 1.5%
MALAISE1.4% 1.5%
HYPOTENSION1.1% 1.5%
ARTHRALGIA1.4% 1.1%
HYPERSENSITIVITY1.4% 0.6%
CONFUSIONAL STATE0.6% 1.4%
PNEUMONIA0.9% 1.3%
INSOMNIA1.3% 0.9%
ANAEMIA0.8% 1.3%
COUGH1.3% 0.6%
SEPSIS0.4% 1.3%
FLUSHING1.3% 0%
PAIN IN EXTREMITY1.2% 1.1%
CHEST PAIN1.2% 0.9%
BACK PAIN1.2% 0.8%
ERYTHEMA1.2% 0.7%
CHILLS1.2% 0.6%
DEPRESSION1% 1.1%
WEIGHT DECREASED1.1% 0.9%
SOMNOLENCE1.1% 0.7%
ABDOMINAL PAIN UPPER0.7% 1.1%
INJURY0.4% 1.1%
PARAESTHESIA0.9% 1%
FALL1% 0.8%
TREMOR1% 0.7%
FEELING ABNORMAL1% 0.6%
DEEP VEIN THROMBOSIS0.4% 1%
CHEST DISCOMFORT1% 0%
DRUG HYPERSENSITIVITY0.9% 0.9%
DECREASED APPETITE0.8% 0.9%
DEHYDRATION0.8% 0.9%
CONSTIPATION0.9% 0.6%
TACHYCARDIA0.6% 0.9%
PULMONARY EMBOLISM0.5% 0.9%
NEUROPATHY PERIPHERAL0.4% 0.9%
THROMBOCYTOPENIA0.4% 0.9%
CLOSTRIDIUM DIFFICILE COLITIS0% 0.9%
BLOOD PRESSURE INCREASED0.9% 0%
HYPERTENSION0.8% 0.8%
HYPOAESTHESIA0.8% 0.7%
OEDEMA PERIPHERAL0.8% 0.7%
GAIT DISTURBANCE0.6% 0.8%
URINARY TRACT INFECTION0.6% 0.8%
RENAL FAILURE0.4% 0.8%
RESPIRATORY FAILURE0% 0.8%
GENERAL PHYSICAL HEALTH DETERIORATION0% 0.8%
SEPTIC SHOCK0% 0.8%
NEUTROPENIA0% 0.8%
TOXIC ENCEPHALOPATHY0% 0.8%
DYSARTHRIA0% 0.8%
ALANINE AMINOTRANSFERASE INCREASED0% 0.8%
WEIGHT INCREASED0.8% 0%
HAEMORRHAGE0% 0.8%
RENAL FAILURE ACUTE0% 0.8%
PRODUCT USE ISSUE0.8% 0%
MUSCLE SPASMS0.7% 0.7%
MYALGIA0.6% 0.7%
DYSPHAGIA0.6% 0.7%
CONDITION AGGRAVATED0.5% 0.7%
HAEMOGLOBIN DECREASED0.5% 0.7%
TOXICITY TO VARIOUS AGENTS0.5% 0.7%
INTERNATIONAL NORMALISED RATIO INCREASED0% 0.7%
LOSS OF CONSCIOUSNESS0.7% 0%
HYPERHIDROSIS0.7% 0%
HEART RATE INCREASED0.7% 0%
INFECTION0% 0.7%
ASPARTATE AMINOTRANSFERASE INCREASED0% 0.7%
EMOTIONAL DISTRESS0% 0.7%
DYSGEUSIA0% 0.7%
CLOSTRIDIUM DIFFICILE INFECTION0% 0.7%
ANAPHYLACTIC REACTION0.5% 0.6%
PALPITATIONS0.6% 0.5%
MUSCULAR WEAKNESS0.4% 0.6%
PLEURAL EFFUSION0% 0.6%
LIVER FUNCTION TEST ABNORMAL0% 0.6%
SYNCOPE0% 0.6%
PANCYTOPENIA0% 0.6%
NASOPHARYNGITIS0.6% 0%
ATRIAL FIBRILLATION0% 0.6%
GASTROINTESTINAL HAEMORRHAGE0% 0.6%
ENCEPHALOPATHY0% 0.6%
MULTI-ORGAN FAILURE0% 0.6%
CONVULSION0.4% 0.5%
FEBRILE NEUTROPENIA0% 0.5%
BLOOD CREATININE INCREASED0% 0.5%
SINUSITIS0.5% 0%
METABOLIC ACIDOSIS0% 0.5%
ABDOMINAL DISTENSION0% 0.5%
OEDEMA0% 0.5%
CHOLELITHIASIS0% 0.5%
ACUTE KIDNEY INJURY0% 0.5%
BLOOD BILIRUBIN INCREASED0% 0.5%
PRODUCT QUALITY ISSUE0.5% 0%
DISEASE PROGRESSION0.5% 0%
OVERDOSE0.5% 0%
THROAT TIGHTNESS0.5% 0%
SWELLING FACE0.5% 0%
ALOPECIA0.5% 0%
OXYGEN SATURATION DECREASED0.5% 0%
ABDOMINAL DISCOMFORT0.5% 0%
PERIPHERAL SWELLING0.5% 0%
VISION BLURRED0.5% 0%
MIGRAINE0.5% 0%
SWELLING0.4% 0%
FEELING HOT0.4% 0%
BLOOD PRESSURE DECREASED0.4% 0%
CONTUSION0.4% 0%
ASTHMA0.4% 0%
DRUG DOSE OMISSION0.4% 0%
OROPHARYNGEAL PAIN0.4% 0%
INJECTION SITE PAIN0.4% 0%
PLATELET COUNT DECREASED0.4% 0%
WHEEZING0.4% 0%
WHITE BLOOD CELL COUNT DECREASED0.4% 0%

New treatments are found every day. View current Benadryl research studies and Metronidazole clinical trials


Top 5 Benadryl Reported Side Effects

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Top 5 Metronidazole Reported Side Effects

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Patient Forum

Recent Comments and Reports

<b>Describe Your Metronidazole Experience Here:</b> after taking a total of 4 pills, 1 first day 2 second day and 1 in third day. I had symptoms begin on that second day. There was tingling in my lips with burning in my lips and tongue. T

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

Can I take Flagyl for a UTI?

Convulsions and seizures sometimes for up to a week and a half at a time

Dentist gave me 400mg of metronidazole for toothache i feel sick and dizzy i keep going hot and cold and my skin goes red

Diagnosed with BV and started taking Flagyl orally twice per day for 7 days. In the 4th day of my treatment my period started. Had very heavy flow. No cramps but very heavy menstrual bleeding and passed large blood clots

Diahorrea, metallic taste in the mouth, burning vagina feeling sick bad stomach

Does taking too much benadryl cause a person to fall asleep and not wake up?

Experienced palpitation

Hi i like know about heavy dosage of benadryl side effects can anybody please give feedback waiting for positive response regards vijay

Hi just been discharged from A&amp;E. Meronidazeole 400mg. I had severe racing heart beats (resting pulse normally 53 became 90-100! and would go to 140 with no prompting). Blood pressure usually 120/60 became 135/90&gt;. Breathing was di

Hi,am 21 years old from phil. am engaging sex so many times for ten guys,time came that am discharging something unpleasant and yellow in color am shy to check a doctor so i just try to search some knowledge on net then am trying using metronidazole

**The reason i reccomend 300-350mg is because i did that ammount 2 times with benadryl and it wasnt the best but i dont think it was horrible, and the second time i did 325mg and mixed it with weed and a few mood helper pills i found at my sisters ho

11.0 years of age, on May 11, 2011, received the varicella injection.. Patient has a pink-ish circle around injection sight. Looking at about 2in x 3in circle... Is red and puffy. Returned to the doctor on May 13, 2011. Patient received Benadryl and

A few days ago i took 450 mg of diphenhydramine in sleeping pills, i know it is extremely stupid and i regret it 100%, first off when i took it i was very stoned and i thought they were benadryl because all i read was the diphenhydramine, about a hal

Age 11, tdap vaccine at 4:00pm. Started suffering from aches and pains and low grade fever by 7:00pm and a swollen eye. Skin looked white and eye was watery and uncomfortable. Treated with ice and benadryl.

Broke out in hives and itching for hours even benadryl wouldn't help

Day 9 post op of being swabbed with chloraprep, rash, swelling of neck, face and lips, 1 day of benadryl and then 6 days of prednizone. Day 1 today after prednisone and rash is popping back out justa s red and angry as day 1 but no swelling

Does taking too much benadryl cause a person to fall asleep and not wake up?

Drawsy, Tiredness, Fatigue. It is bad as Benadryl (cold medisine you take before go to bed)

Hi i like know about heavy dosage of benadryl side effects can anybody please give feedback waiting for positive response regards vijay

I had surgery 3-9-10 and swabbed down with chloraprep on neck area and jaw. By Thursday had rash on this area and upper chest and swelling in face. Treated w/ benadryl every 4 hrs on Thurs per surgeon's request.&nbsp