Only clinical study designs (S)randomised controlled trials (RCTs), non-RCTs, cohort, or case-control studieswere included
A subcutaneous injection uses a shorter needle to inject the B12 solution into the tissue layer between the skin and muscle, but it may be a slower absorption rate than other methods of administration
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
Youre not alone, and its completely understandable to feel concerned, especially when the healthcare system can feel slow to provide clear answers
1 killer of adults in industrialized nations
Without proper support, these issues can affect energy, confidence, and long-term health