U.S. doctors online nowAsk doctors free
Top answers from doctors based on your search:

Side effects high level vitamin b 12

A 56-year-old female asked:
Dr. Klaus d Lessnau
Pulmonary Critical Care 37 years experience
High intake: usually from MVI (multivitamin) or additional intake. Unlikely to be from fish. You would have to eat a lot. Even better, no side effects from high ... Read More
A 61-year-old female asked:
Dr. Randy Baker
Holistic Medicine 41 years experience
Needs evaluation: I am sorry to tell you that high B12 levels can be a sign of serious health problems including liver ; kidney disease, myelproliferative disorders inc... Read More
A 61-year-old female asked:
Dr. Randy Baker
Holistic Medicine 41 years experience
Slightly high, test: Normal B12 levels are up to 900 so your daughter's are slightly elevated. High B12 can be caused by liver disease (cirrhosis/hepatitis), kidney diseas... Read More
A member asked:
Dr. Tony Ho
Dr. Tony Hoanswered
Internal Medicine 15 years experience
No changes: You have high, but not abnormally or dangerously high levels. I wouldn't change anything. That being said, if you are taking B12 supplements without ... Read More
A 57-year-old male asked:
Dr. Gurmukh Singh
Pathology 50 years experience
Taking this amount will not do any harm. It may not help either if you are not deficient in B12. Your doctor should ascertain the cause of your anemia... Read More
A 28-year-old female asked:
Dr. Barrett Mclaughlin
Emergency Medicine 10 years experience
Fix the Iron First: Low iron levels can cause fatigue. B12 deficiency can too, but not as often in developed countries. Though, you might not be getting enough in your di... Read More
A 48-year-old member asked:
Dr. Randy Baker
Holistic Medicine 41 years experience
It depends...: Work for what? If someone has B12 deficiency then B12 shots definitely "work" to treat the deficiency and resultant anemia/neurological symptoms. Howe... Read More
A 31-year-old member asked:
Dr. Bennett Machanic
Neurology 53 years experience
Sometimes: If you have pernicious anemia, b-12 injections can reverse much of the nerve issues. If you have diabetic neuropathy, a medical food, metanx which co... Read More
A 31-year-old member asked:
Dr. Derrick Lonsdale
Preventive Medicine 74 years experience
Nothing typical: B12 is but one of many vitamins and the symptoms overlap each other. B12 deficiency produces fairly typical changes in the blood. Because all of them ... Read More
A 43-year-old member asked:
Dr. Krishna Kumar
Psychiatry 56 years experience
Chlorella B12: Chlorella is a type of freshwater seaweed (green algae). It contains protein, iron, vitamins B and C, and other antioxidants It has been used to tr... Read More
Connect with a U.S. board-certified doctor by text or video anytime, anywhere.
24/7 visits - just $39!
50% off with $15/month membership