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Bromodiphenhydramine Side Effects

The most commonly reported side effects of bromodiphenhydramine include nausea, pain, and vomiting, based on 125 FDA adverse event reports from 2004 to 2022. 6.4% of reports found the drug to be ineffective.

Bromodiphenhydramine side effects

Percentages show how often each reaction appears relative to total reports for bromodiphenhydramine.

1
Nausea12.0%15
2
Pain11.2%14
3
Vomiting8.8%11
4
Headache8.0%10
5
Malaise8.0%10
6
Asthenia8.0%10
7
Nausea7.2%9
8
Vomiting7.2%9
9
Pain In Extremity6.4%8
10
Drug Ineffective6.4%8
11
Weight Decreased6.4%8
12
Diarrhoea5.6%7
13
Dyspnoea4.8%6
14
Somnolence4.0%5
15
Weight Decreased4.0%5

These are voluntary reports and do not establish that bromodiphenhydramine caused these reactions.

Report severity

90.4%Serious113 reports
40.8%Hospitalizations51 reports
16.0%Fatal20 reports

Seriousness is determined by the reporter, not by OpenClaim.

Bromodiphenhydramine drug interactions

Other drugs that appear in adverse event reports alongside bromodiphenhydramine. Drugs flagged as a suspected cause appear in the first column. Drugs taken at the same time but not suspected appear in the second.

Also suspected

1
Interferon5.6%7
2
Rituximab4.8%6
3
Adalimumab4.0%5
4
Sunitinib-malate4.0%5
5
Valsartan3.2%4
6
Ethinyl-estradiol2.4%3
7
Teriparatide2.4%3
8
Hydrochlorothiazide2.4%3
9
Prednisone2.4%3
10
Sirolimus1.6%2
11
Acetaminophen1.6%2
12
Tiotropium-bromide1.6%2
13
Norelgestromin1.6%2
14
Anastrozole1.6%2
15
Octreotide-acetate1.6%2

Taken alongside

1
Omeprazole23.2%29
2
Acetaminophen15.2%19
3
Codeine8.8%11
4
Prednisone8.8%11
5
Pantoprazole-sodium8.8%11
6
Ondansetron8.8%11
7
Levothyroxine-sodium7.2%9
8
Ranitidine6.4%8
9
Tramadol-hydrochloride5.6%7
10
Metoprolol4.8%6
11
Furosemide4.8%6
12
Aspirin4.8%6
13
Clonazepam4.8%6
14
Insulin4.8%6
15
Folic-acid4.8%6

Co-occurrence in adverse event reports does not establish a drug interaction. Patients often take multiple medications, and these lists reflect prescribing patterns rather than causal relationships. Consult a healthcare provider about potential drug interactions.

Who reports bromodiphenhydramine side effects

62.4% of bromodiphenhydramine adverse event reports involve female patients and 36.8% involve male patients. The largest age group is adult at 62%. These figures reflect who reports side effects, not underlying risk.

Sex

Female62.4%
Male36.8%
Unknown0.8%

Age group

< 21.1%
2–110.0%
12–172.2%
18–6461.8%
65+34.8%

What is bromodiphenhydramine used for

Conditions and purposes for which patients were taking bromodiphenhydramine when the adverse event was reported.

DizzinessDrug Use For Unknown IndicationHypertensionInsomniaIntentional OverdoseLabyrinthitisMigraineNauseaParaesthesiaPremedicationProduct Used For Unknown IndicationProphylaxisProphylaxis Of Nausea And VomitingVomiting

Bromodiphenhydramine brand names and reporting trend

Bromodiphenhydramine is sold under the brand name Bromanyl.

Brand names

Bromanyl121

Quarterly reports (20042022)

200520102022

An upward trend reflects increased FAERS reporting overall, not necessarily increased risk.

Taking bromodiphenhydramine with another medication?

Ask OpenClaim about your specific drug combination. Get a sourced report using FDA data, drug labels, and medical literature.