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B12 can also: Improve mood and helps retain memory and mental functions Lower fatigue and reduces muscle weakness Improve metabolism Boost sperm count Prevent or treat diabetic neuropathy, pins and needles (paraesthesia) What symptoms can occur with vitamin B12 deficiency
Additionally, choline helps convert homocysteine to methionine, an amino acid used in countless essential cellular activities
Risks include: Underdosed vials or mislabeled products Peptides cut with fillers or bacterial fragments Inconsistent purity or potency A 2021 analysis by Usherwood et al
Last reviewed: June 6, 2026 Last updated: June 6, 2026 Written by: Jay Hastings, CEO of PlexusDx Jay Hastings is the CEO of PlexusDx, a precision health company focused on genetic testing, blood biomarker insights, and personalized wellness recommendations
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