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Important: This site presents data from the FDA Adverse Event Reporting System (FAERS). A report does not mean the drug caused the event. Full disclaimer.

Vitamin b12 deficiency: Which Medications Cause It? (2,876 Reports Across 297 Drugs)

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Vitamin b12 deficiency has been reported as an adverse event with 297 different drugs in the FDA's FAERS database, with 2,876 total reports. 91 of these reports resulted in death.The drugs most commonly associated with Vitamin b12 deficiency are METFORMIN, ADALIMUMAB, and OMEPRAZOLE.

2,876
Total Reports
297
Drugs Involved
91
Deaths
1,210
Hospitalizations
58.5 yrs
Average Patient Age
61.4% / 38.6%
Female / Male

Which Drugs Cause Vitamin b12 deficiency Most Often?

Drug Reports % of Drug Reports Deaths Hosp. Life-Threat.
METFORMIN 504 0.6% 1 293 20
ADALIMUMAB 148 0.0% 0 62 2
OMEPRAZOLE 125 0.1% 4 49 0
ESOMEPRAZOLE 111 0.2% 0 19 20
PANTOPRAZOLE 107 0.1% 0 54 8
METHOTREXATE 101 0.0% 13 59 17
ASPIRIN 92 0.1% 1 34 21
ETANERCEPT 82 0.0% 0 12 14
CARBIDOPA\LEVODOPA 76 0.1% 3 44 0
PREDNISONE 75 0.1% 1 23 20
RITUXIMAB 71 0.0% 8 16 28
USTEKINUMAB 57 0.1% 0 20 0
DEXAMETHASONE 55 0.0% 0 23 1
LENALIDOMIDE 53 0.0% 0 12 3
VEDOLIZUMAB 50 0.1% 0 19 0
FINGOLIMOD 49 0.1% 0 14 0
ATORVASTATIN 48 0.1% 0 31 2
PREGABALIN 48 0.1% 0 4 20
SODIUM OXYBATE 47 0.1% 0 7 0
ALENDRONATE 45 0.2% 8 43 0

View all 297 drugs →

Top 3 Drugs Associated With Vitamin b12 deficiency

504 reports
148 reports
125 reports

Related Side Effects

Drug ineffective (1,049,718) Off label use (762,782) Death (660,423) Fatigue (599,248) Nausea (562,301) Diarrhoea (491,550) Pain (471,975) Headache (460,069) Dyspnoea (409,496) Dizziness (352,922)