• Male
• 35 Years
• 31/05/2023

Question

What are the side effects of vitamin B12 supplements?

Answered by 1 Apollo Doctors

Dr Dhankecha Dineshbhai

General Practitioner

• MBBS
• 6+ Yrs

Consult Now

The reported side effects are headache, nausea and loose motions. Some people also feel sleepy and lethargic too.

Dr. Dhankecha Suggests...

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Answered 24/07/2025

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