Review: could Vitamin B12 cause Als?


Als is reported only by a few people who take Vitamin B12. We study 25,694 people who have side effects while taking Vitamin b12 from FDA and social media. Among them, 2 have Als. Find out below who they are, when they have Als and more.

Personalized health information

On eHealthMe you can find out what patients like me (same gender, age) reported their drugs and conditions on FDA and social media since 1977. Our tools are free and anonymous. 86 million people have used us. 300+ peer-reviewed medical journals have referenced our original studies. Start now >>>

Vitamin B12

Vitamin b12 has active ingredients of cobalamin. It is often used in vitamin b12 deficiency. (latest outcomes from Vitamin b12 25,920 users)


Als (als is the death of both upper and lower motor neurons in the motor cortex of the brain, the brain stem, and the spinal cord) has been reported by people with high blood cholesterol, rheumatoid arthritis, multiple sclerosis, hyperlipidaemia, high blood pressure (latest reports from 1,860 Als patients).

On Oct, 22, 2016

25,694 people reported to have side effects when taking Vitamin B12.
Among them, 2 people (0.01%) have Als

Number of reports submitted per year:

Could Vitamin b12 cause Als?

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

  • female: 100 %
  • male: 0.0 %

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

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

Top conditions involved for these people *:

  • Nausea (2 people, 100.00%)
  • Crohn's Disease (2 people, 100.00%)
  • Anxiety (2 people, 100.00%)
  • Amyotrophic Lateral Sclerosis (2 people, 100.00%)
  • Heart Rate (1 person, 50.00%)

Top co-used drugs for these people *:

  • Zofran (2 people, 100.00%)
  • Vistaril (2 people, 100.00%)
  • Ivig (2 people, 100.00%)
  • Baclofen. (2 people, 100.00%)
  • Aleve (2 people, 100.00%)

Top other side effects for these people *:

  • Meningitis Aseptic (2 people, 100.00%)
  • Weight Increased (1 person, 50.00%)
  • Explorative Laparotomy (1 person, 50.00%)
  • Dyspareunia (1 person, 50.00%)
  • Dizziness (1 person, 50.00%)

* 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.

Do you have Als when taking Vitamin b12?

Browse all side effects of Vitamin b12

a b c d e f g h i j k l m n o p q r s t u v w x y z

Drugs that are associated with Als


Could your condition cause Als


Related studies

Can you answer these questions?

More questions for: Vitamin b12, Als

You may be interested in these reviews

More reviews for: Vitamin b12, Als

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.

WARNING: Please DO NOT STOP MEDICATIONS without first consulting a physician since doing so could be hazardous to your health.

DISCLAIMER: All material available on is for informational purposes only, and is not a substitute for medical advice, diagnosis, or treatment provided by a qualified healthcare provider. All information is observation-only, and has not been supported by scientific studies or clinical trials unless otherwise stated. Different individuals may respond to medication in different ways. Every effort has been made to ensure that all information is accurate, up-to-date, and complete, but no guarantee is made to that effect. The use of the eHealthMe site and its content is at your own risk.

You may report adverse side effects to the FDA at or 1-800-FDA-1088 (1-800-332-1088).

If you use this eHealthMe study on publication, please acknowledge it with a citation: study title, URL, accessed date.