Hello.

Thanks for writing to us.

High doses of biotin are not documented to have any relation with any kind of bleeding disorders. Biotin is a water soluble vitamin which if consumed in excess is excreted through urine in our body.

The finding of vaginal brownish bleeding is mainly indicative of an old bleeding of the uterus and is not likely to be associated with biotin.

When did you have your last periods?

Is there any history of irregular spotting prior to this episode also?

You may try stopping biotin for few days to see if there is effects on the bleeding.

I hope this information has been both informative and helpful for you. If there are additional concerns, I am available for your followups.

Regards

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