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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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How Long Can I Sustain Without The Side Effects As The Second Dose Of B 12 Unavailable?

I get B 12 injections every month for a health related reason. My doctor told me that they do not have any B 12 and also my daughter, who works at a pharmacy, told me this. I was due to have one March 1st. How long can I go without having any side effects? I am starting to feel real tired now.
Mon, 8 Sep 2014
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General & Family Physician,  's  Response
Hello there,
B12 deficiency can cause the symptoms you have described. Usually if you have been prescribed monthly doses of Vit B12 you need to take them monthly cause that is how long the effect of one dose lasts. It also depends on the reason you were started on these injections. Is it because you do not absorb it orally or because your diet is completely devoid of Vit B12. Either ways you should get your B 12 levels checked to decide your status by missing the dose for so long. Deficiency will lead to nerve damage, tiredness, moth ulcers and more. Do not delay for too long.
Regards
Dr Shreya
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How Long Can I Sustain Without The Side Effects As The Second Dose Of B 12 Unavailable?

Hello there, B12 deficiency can cause the symptoms you have described. Usually if you have been prescribed monthly doses of Vit B12 you need to take them monthly cause that is how long the effect of one dose lasts. It also depends on the reason you were started on these injections. Is it because you do not absorb it orally or because your diet is completely devoid of Vit B12. Either ways you should get your B 12 levels checked to decide your status by missing the dose for so long. Deficiency will lead to nerve damage, tiredness, moth ulcers and more. Do not delay for too long. Regards Dr Shreya