Vitamin B12 reviews: what real users say
We read 630 first-hand mentions of Vitamin B12 from health and supplement communities. 202 of them say clearly how it went — and 66% of those say it helped.
Where people say it works: energy (90% of 103), mood (89% of 46), anxiety (62% of 21), focus (88% of 17).
Where it disappoints: sleep (only 42% of 12 say better), skin & hair (only 20% of 5 say better).
Most common complaints: acne, anxiety, jitteriness, weakness, vivid dreams. All side effects →
Positive experiences
“I supplemented with sublingual b12 and iron and daily electrolytes and I'm feeling much better.”
“Yeah for me b12 was the big one. Correcting my deficiency which was in part due to MTHFR genetic variation and also due to being mostly vegetarian really helped me.”
“1. If I take early in the morning, it helps with circadian rhythm. 2. If I take more late, it helps with energy.”
“Later lab tests uncovered both, and subsequent supplementation fixed a good deal of issues I had in terms of energy and sleep.”
“B12 just seems to give me energy and wakefulness; not much else.”
“My neurologist told me to do this around six months ago, because she suspected a deficiency, and I felt a lot like you do when I took it.”
Negative and mixed experiences
“I tried so many things for depression like saffron rhodiola tyrosine omega 3 methylfolate B12 taurine theanine NAC inositol b complex magnesium nothing helps it.”
“I'm still taking Magnesium, Vitamin D and the B12 regularly, however I do not notice any difference so far.”
“Everytime I go up in dose (and sometimes, down) with methyl B12, I experience a few days where I feel very energetic, and everything is just great.”
“Methyl B12 destroys me. It makes me feel on edge with no ability to tolerate stress.”
Quotes are verbatim and link to the original public discussion. Information only — not medical advice. How we collect reports