Is biotin beneficial for hypoglycemia? how about for reactive hypoglycemia?

N+you don't have it: Biotin isn't useful for anything except increasing "health food" store revenue. In addition, in my 35 years of practice, I have never seen a case of reactive hypoglycemia. The disorder doesn't exist, if you're overweight the symptom are a natural response to you sugar returning to normal. A glucose tolerance test (if you've had one) is not and never will be a valid diagnostic test for hypoglycem.