Review: could Vitamin B12 cause Arrhythmia?


Arrhythmia is found among people who take Vitamin B12, especially for people who are female, 60+ old , have been taking the drug for 6 - 12 months, also take medication Vitamin D, and have Pain . We study 7,480 people who have side effects while taking Vitamin b12 from FDA and social media. Among them, 91 have Arrhythmia. Find out below who they are, when they have Arrhythmia and more.

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Vitamin B12

Vitamin b12 has active ingredients of cobalamin. It is often used in vitamin supplementation. (latest outcomes from Vitamin b12 7,665 users)


Arrhythmia (irregular heartbeat) has been reported by people with breathing difficulty, hypotension, weakness, diarrhea, chest pain (latest reports from 84,354 Arrhythmia patients).

On Aug, 24, 2016

7,480 people reported to have side effects when taking Vitamin B12.
Among them, 91 people (1.22%) have Arrhythmia

Number of reports submitted per year:

Could Vitamin b12 cause Arrhythmia?

Time on Vitamin B12 when people have Arrhythmia *:

  • < 1 month: 0.0 %
  • 1 - 6 months: 0.0 %
  • 6 - 12 months: 33.33 %
  • 1 - 2 years: 33.33 %
  • 2 - 5 years: 33.33 %
  • 5 - 10 years: 0.0 %
  • 10+ years: 0.0 %

Gender of people who have Arrhythmia when taking Vitamin B12 *:

  • female: 58.24 %
  • male: 41.76 %

Age of people who have Arrhythmia when taking Vitamin B12 *:

  • 0-1: 0.0 %
  • 2-9: 0.0 %
  • 10-19: 1.35 %
  • 20-29: 4.05 %
  • 30-39: 8.11 %
  • 40-49: 13.51 %
  • 50-59: 18.92 %
  • 60+: 54.05 %

Severity if Arrhythmia when taking Vitamin B12 **:

  • least: 0.0 %
  • moderate: 66.67 %
  • severe: 33.33 %
  • most severe: 0.0 %

How people recovered from Arrhythmia **:

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

Top conditions involved for these people *:

  • Pain (13 people)
  • Hypertension (10 people)
  • Multiple Sclerosis (9 people)
  • Depression (6 people)
  • Vitamin Supplementation (5 people)

Top co-used drugs for these people *:

  • Vitamin D (20 people)
  • Folic Acid (17 people)
  • Aspirin (13 people)
  • Zoloft (12 people)
  • Vitamin E (12 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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