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As we all know, ten years later we are still all relying on the same low sensitivity B12 serum test and there is limited availability to other tests as recommended in the 2024 NICE Guideline, which are also not a good and reliable indicator of B12 deficiency without considering symptoms and risk factors
Made with only active ingredients and highly purified water, this is the ultimate B12 supplement to support your mind and body
Note: An Expression of Concern has been issued for this paper (PMID 34551989, 2021)
Interest in DSIP has grown rapidly alongside discoveries confirming its effects on melatonin, cortisol, and pain perception
TB-500 is reported with a longer serum half-life (often cited around 2.53 hours after subcutaneous administration) and prolonged tissue availability, which is why research protocols conventionally model it on a less frequent schedule
NPJ Genom Med, 2026
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