A deficiency in vitamin B12 can cause fatigue, headaches, indigestion, problems with your vision, increased risk of obesity, and cognitive difficulties
In all of these cases, a thorough medical evaluation is essential before any B12 supplementation
If you take B12 supplements and your level is high, thats almost always the explanation
Batch-level traceability from production to delivery
Retrieved from PfizerMedicalInformation.com SND Staff
The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice