B12 converts homocysteine, an inflammatory amino acid, into methionine
A randomized placebo-controlled trial of using B vitamins to prevent cognitive decline in older mild cognitive impairment patients
We found no significant difference among studied administrated routes in all other CBC parameters and homocysteine levels
B complex , on the other hand, is a group of eight B vitamins (B1, B2, B3, B5, B6, B7 (biotin), B9 (folate), and B12) that work together to support your metabolism, nervous system, skin health, stress response, and more
Serious side effects are rare but can include allergic reactions (rash, swelling, difficulty breathing) or, in very specific cases of severe anemia treatment, low potassium levels