Vitamin B12 can be taken either on an empty stomach or after food â it does not significantly affect absorption either way, unlike iron or
Vitamin D. However, taking it after breakfast is generally better tolerated as some people feel mild nausea on an empty stomach. Regarding duration â if your deficiency is significant, a course of 3 months is typically recommended, after which you recheck your levels and may continue with a maintenance dose if needed.
Next Steps
Please consult me directly on Practo for a detailed evaluation â I can advise on the right dose and form (tablet vs injection) based on how low your
B12 is and your symptoms.