I've recently had 1000mg of b12 (apparently correct dose for my weight). could this have an effect on my menstrual cycle? my last period was june 3. i have taken a pregnancy test that has come back negative.

Question

Hi doctor. Hello doctor. 17years I've usually an irregular menstrual cycle which is of 45-50 days.I got my last period on 10th june but now its 31st july n no periods.I've taken a home prgnancy test 4 times and it stated negative but I've experienced spo

Answer 1

Probably not: Several of the B vitamins including B12 are necessary for a normal menstrual cycle, but taking B12 is unlikely to be the cause of missing a menstrual cycle completely. I assume there is a specific reason for taking the B12, because a normal diet would supply enough unless you have a condition in which your body cannot absorb the B12 or your body is unable to effectively use the B12 it gets.

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Answer 2

No : B 12 injections do not affect the menstrual cycle . Please repeat the pregnancy test and see your GP .

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Answer 3

Vitamin B12: injection will not affect your periods. However if you are exercising and losing weight the the weight loss and intense exercise can cause you not to have periods

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I've recently had 1000mg of b12 (apparently correct dose for my weight). could this have an effect on my menstrual cycle? my last period was june 3. i have taken a pregnancy test that has come back negative.

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