Bactrim and Vitamin b12 deficiency - from FDA reports


Vitamin b12 deficiency is found among people who take Bactrim, especially for people who are female, 60+ old also take medication Lexapro, and have Pain. This review analyzes which people have Vitamin b12 deficiency with Bactrim. It is created by eHealthMe based on reports of 38,505 people who have side effects when taking Bactrim from FDA, and is updated regularly.

What to expect?

If you take Bactrim and have Vitamin b12 deficiency, find out what symptoms you could have in 1 year or longer.

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On Mar, 08, 2017

38,505 people reported to have side effects when taking Bactrim.
Among them, 32 people (0.08%) have Vitamin B12 Deficiency

Number of reports submitted per year:

Could Bactrim cause Vitamin b12 deficiency?

Gender of people who have Vitamin B12 Deficiency when taking Bactrim *:

  • female: 81.25 %
  • male: 18.75 %

Age of people who have Vitamin B12 Deficiency when taking Bactrim *:

  • 0-1: 0.0 %
  • 2-9: 0.0 %
  • 10-19: 0.0 %
  • 20-29: 0.0 %
  • 30-39: 7.69 %
  • 40-49: 30.77 %
  • 50-59: 30.77 %
  • 60+: 30.77 %

Top conditions involved for these people *:

  • Pain (5 people, 15.62%)
  • Metastatic Neoplasm (4 people, 12.50%)
  • Type 2 Diabetes (3 people, 9.38%)
  • Gastritis (2 people, 6.25%)
  • Diarrhea (2 people, 6.25%)

Top co-used drugs for these people *:

  • Lexapro (18 people, 56.25%)
  • Keflex (16 people, 50.00%)
  • Folic Acid (16 people, 50.00%)
  • Faslodex (16 people, 50.00%)
  • Aciphex (16 people, 50.00%)

Top other side effects for these people *:

  • Fatigue (22 people, 68.75%)
  • Joint Pain (21 people, 65.62%)
  • Breathing Difficulty (21 people, 65.62%)
  • Back Pain (20 people, 62.50%)
  • Pain (18 people, 56.25%)

* Approximation only. Some reports may have incomplete information.

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.

Do you have Vitamin b12 deficiency when taking Bactrim?


Bactrim has active ingredients of sulfamethoxazole; trimethoprim. It is often used in urinary tract infection. (latest outcomes from Bactrim 40,685 users)

Vitamin B12 Deficiency

Vitamin b12 deficiency has been reported by people with osteoporosis, osteopenia, high blood pressure, multiple sclerosis, type 2 diabetes (latest reports from 3,698 Vitamin b12 deficiency patients).

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