My vitamin B12 level was 350 on 29 November 2025, and I have not taken any supplements since then. I now have foot pain at night, fatigue, dullness, and daytime sleepiness. Can I start taking 500 mcg of methylcobalamin daily?
While your vitamin B12 level of 350 is within the normal range, it is on the lower side (borderline), and your symptoms may be related but are not specific to a deficiency. Taking 500 mcg of methylcobalamin daily is generally safe and may help improve symptoms over time. However, it is advisable to consult your doctor first to rule out other causes of your foot pain, such as vitamin D deficiency, anaemia, or nerve issues, and to receive appropriate treatment.