Conclusion: Twenty four published articles were eligible for inclusion in this systematic review in which a range of treatment regimens were evaluated including both B12 monotherapy and B12 in combination with other vitamins or conventional treatments, such as gabapentinoids. Overall, this systematic review demonstrates that there is currently some evidence for the therapeutic effect of B12 in the treatment of post-herpetic neuralgia (level II evidence) and the treatment of painful peripheral neuropathy (level III evidence).
PubMed 32722436 ↗Methylcobalamin
People mainly take Methylcobalamin for energy, mood, anxiety. Based on 32 first-hand reports and 19 meta-analyses & systematic reviews in the medical literature. Ranked #134 of 1,974 overall.
Of reports that state an outcome, 50% are positive.
What Methylcobalamin does, according to users
Of the people who reported each effect, the share who said it got better.
2 more with fewer than 3 reports
What the research says
Systematic reviews and meta-analyses from PubMed, with their published conclusions.
3+ meta-analyses or systematic reviews and 10+ randomized controlled trials in humans. The grade measures how much human research exists — read the conclusions below for what it found.
Conclusion: Conclusion: Our findings indicate that mecobalamin in combination may be effective in improving clinical therapeutic efficacy and NCV outcomes for peripheral neuropathy patients, but the evidence is not clear for mecobalamin alone. More high-quality studies are required to confirm this finding.
PubMed 32716261 ↗Conclusion: Our study suggests that herbal medicine and CHM might be more effective than methylcobalamin alone in the management of DPN. Further rigorous studies should be conducted to make more definite conclusions.
PubMed 36007447 ↗Conclusion: The results of the meta-analysis show that treatment with LA-MC for 2-4 weeks is associated with better outcomes in NCV and neuropathic symptoms relative to MC treatment. However larger well-designed studies are required to confirm this conclusion.
PubMed 23664235 ↗Dosage people report
As stated by users — not a recommendation. Follow the label or your doctor.
Reported side effects
How often each side effect came up across all reports.
What users say
Verbatim quotes, shortened only — each links to the original discussion.
“Methyl B12 sublinqually.”
“Mine finally went away when I started taking methylcobalamin.”
“I do better with methylcobalamin but hydroxycobalamin also seems to work well for me”
“take a b12... methylcobalamin”
“severely deficient on methylcobalamin”
Top discussions (5)
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- This stack is perfect for me ↗
- How can I boost deep sleep ? I’ve tried a lot of things. ↗
- 2 years experiments with nootropics. I finally found best for myself. I hope this helps you too ↗
- Alpha GPC might’ve just done it for me ↗
Other options for energy
User data from public discussions; research from PubMed. Information only, not medical advice — talk to a doctor before starting, stopping or combining anything. Data updated October 2, 2026. How we rate