Review: could Benadryl cause Low Blood Pressure?


Low blood pressure is found among people who take Benadryl, especially for people who are female, 60+ old , have been taking the drug for < 1 month, also take medication Tylenol, and have Pain . We study 28,793 people who have side effects while taking Benadryl from FDA and social media. Among them, 1,403 have Low blood pressure. Find out below who they are, when they have Low blood pressure and more.

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Benadryl has active ingredients of diphenhydramine hydrochloride. It is often used in hypersensitivity. (latest outcomes from Benadryl 32,636 users)

Low Blood Pressure

Low blood pressure has been reported by people with thrombocytopenia, acute kidney failure, sepsis, arrhythmias, pneumonia (latest reports from 116,064 Low blood pressure patients).

On Aug, 20, 2016

28,793 people reported to have side effects when taking Benadryl.
Among them, 1,403 people (4.87%) have Low Blood Pressure

Number of reports submitted per year:

Could Benadryl cause Low blood pressure?

Time on Benadryl when people have Low Blood Pressure *:

  • < 1 month: 87.42 %
  • 1 - 6 months: 11.92 %
  • 6 - 12 months: 0.66 %
  • 1 - 2 years: 0.0 %
  • 2 - 5 years: 0.0 %
  • 5 - 10 years: 0.0 %
  • 10+ years: 0.0 %

Gender of people who have Low Blood Pressure when taking Benadryl *:

  • female: 55.12 %
  • male: 44.88 %

Age of people who have Low Blood Pressure when taking Benadryl *:

  • 0-1: 0.74 %
  • 2-9: 1.49 %
  • 10-19: 5.29 %
  • 20-29: 3.88 %
  • 30-39: 6.78 %
  • 40-49: 14.13 %
  • 50-59: 20.08 %
  • 60+: 47.6 %

Severity if Low Blood Pressure when taking Benadryl **:

  • least: 33.33 %
  • moderate: 0.0 %
  • severe: 50.0 %
  • most severe: 16.67 %

How people recovered from Low Blood Pressure **:

  • while on drug: 33.33 %
  • after off the drug: 0.0 %
  • not yet: 66.67 %

Top conditions involved for these people *:

  • Pain (69 people)
  • Hypertension (57 people)
  • Crohn's Disease (54 people)
  • Nausea (51 people)
  • Depression (46 people)

Top co-used drugs for these people *:

  • Tylenol (301 people)
  • Decadron (259 people)
  • Zofran (186 people)
  • Ativan (186 people)
  • Lasix (179 people)

* Approximation only. Some reports may have incomplete information.

** Reports from social media are used.

How to use the study: print a copy of the study and bring it to your health teams to ensure drug risks and benefits are fully discussed and understood.

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NOTE: The study is based on active ingredients and brand name. Other drugs that have the same active ingredients (e.g. generic drugs) are NOT considered.

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