They are not interchangeable, and the choice depends on symptoms, blood results, and clinical judgement
Only clinical study designs (S)randomised controlled trials (RCTs), non-RCTs, cohort, or case-control studieswere included
The authors suggest that either methyl-B12 and adenosyl-B12 should be given together, or either cyano-B12 or hydroxo-B12 on their own, both of which can be converted into both active forms
If anything, we should be shortening the interval between injections, not making it longer
Research peptides from Durham Peptides and virtually all peptide suppliers are shipped as lyophilized (freeze-dried) powder
Without proper support, these issues can affect energy, confidence, and long-term health