Top answers from doctors based on your search:
Disclaimer

vitamin b12 1000 mcg

A 26-year-old male asked:
Dr. Dan Fisher
27 years experience Internal Medicine
No useful half life.: Typical half life does not make much sense since the vitamin is not strictly "metabolized." It is taken up by tissues and converted by tissues to the ... Read More

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Personalized answers
Free
Talk to a doctor
24/7 visits
$15 per month
A 35-year-old female asked:
Dr. Ed Friedlander
44 years experience Pathology
Why take B12?: Vitamin B12 pills aren't going to do a thing for you unless you are actually deficient as demonstrated by labwork, and if you are, the situation is ex ... Read More
A 30-year-old member asked:
Dr. Thomas Namey
48 years experience Rheumatology
Yes, but...: It is too much, unless you have severe absorption problems, but 2500mcg should solve that. You will pee out the excess since it will shortly saturate ... Read More
A male asked:
Dr. Roy Arnold
47 years experience Internal Medicine
Waste of money: B12 in excess quantities is rapidly excreted by the kidney. While this much daily probably won't hurt you, it won't help much at all. The typical dail ... Read More
A 45-year-old member asked:
Dr. Andrew Lipton
30 years experience Holistic Medicine
Vit b12: Yes it is safe, vit b 12 is water soluble and excess will flush out of body.
1
1 thank
A 32-year-old member asked:
Dr. Ajay Pathak
19 years experience General Practice
B12: B12 is an essential water soluble vitamin and if you have B12 deficiency it is ok to take supplements while nursing.
2
2 thanks
A 47-year-old member asked:
Dr. Su Fairchild
24 years experience Integrative Medicine
Depends: If your fatigue is due to a B12 deficiency, then yes, correcting that deficiency would improve your energy levels.
A 35-year-old member asked:
Dr. Eric Weisman
36 years experience Neurology
If you are needing: B12 will make a big difference if you are deficient.
A 40-year-old member asked:
Dr. Douglas Tavenner, jr.
50 years experience Cosmetic Dentistry
Study Links:: 1) http://en.Wikipedia.Org/wiki/vitamin_b12_deficiency 2) http://www.Doctoroz.Com/videos/end-your-energy-crisis-vitamin-b12 3) http://chriskresser.C ... Read More
A 22-year-old male asked:
Dr. Martin Raff
56 years experience Infectious Disease
B-12: If you are a vegetarian you should consider remaining on vitamin B-12 supplements.

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Personalized answers
Free
Talk to a doctor
24/7 visits
$15 per month