A 28-year-old female asked:
have crohn's, vit d deficient and take prescription for it. vit b12 is usually low due to crohn's, this time was >2,000, why?
2 doctor answers
Dr. Milton Alvis, jr answered
40 years experience Preventive Medicine
Avoid Rx Vit D; B12?: Rx vitamin D is nearly always D2, not D3: often drives D3 down, not up; have seen this response many years. OTC 50,000 Vit D3, once weekly, is typically far superior. B12: look up "vitamin b12 sources & bioavailability" on Google. B12 is usually easy to bring up with with supplements, even with absorption problems & these can vary widely.
Answered on Jan 16, 2015
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:
People also searched for:
Connect by text or video with a U.S. board-certified doctor now — wait time is less than 1 minute!