B12 deficiency symptoms include (2, 3): Megaloblastic anemia Fatigue and weakness Constipation Loss of appetite and weight loss
If youre self-monitoring or taking other supplements, always be upfront about everything youre using so your overall intake stays balanced
FDA.gov (2026) 11
Your body needs vitamin B12, but it cannot produce it
Vitamin B12 and Folate July 16, 2026 Key points Vitamin B12 and folate are vitamins that serve important functions in the human body
Cyanocobalamin Dosage, Concentration, Route of Administration Dosage : Seek advice from a licensed physician, medical director, or other healthcare provider Concentration : 2mg/ml Route of Administration : IM/Sub-Q Resources: Precautions/Side Effects Before taking, make sure to tell your healthcare provider about any allergies to this, cobalt, or any form of vitamin B12