U.S. doctors online nowAsk doctors free
Walnut Creek, CA
A 22-year-old female asked:

Is it possible to be allergic to vitamins ie biotin/vitamin b supplement? how long before a vitamin is out of your system? 1 day?

1 doctor answer4 doctors weighed in
Dr. Randy Baker
Holistic Medicine 41 years experience
Yes, about a day: One can not be allergic to a pure vitamin but can certainly be allergic to a vitamin supplement as they can contain corn, yeast, gluten (all common allergens) and various fillers and binders. More pure supplements from companies like Pure Encapsulations and Thorne tend to be better tolerated. And B vitamins (except B12) should leave your body within a day or so.
Created for people with ongoing healthcare needs but benefits everyone.
Last updated Sep 4, 2017


Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.