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Vuksic T et al

Vitamin B12 is a water-soluble vitamin essential to many key functions in the body

In summary, glutathione IV drips are widely regarded as safe when done properly

In the obese trial cohort, 1 mg moved 24-hour ambulatory heart rate by +0.7 bpm at week 24 the peak of the heart-rate curve, and below the placebo arms +0.8. In a healthy lean Phase 1 group, the same dose raised heart rate by about 10 bpm, with a peak near 15 to 20 bpm around days 4 to 6. Lean, younger participants had more reactive heart-rate control than the sedentary, obese, and metabolically stressed trial population

The body requires enough time to absorb sufficient supplement levels from oral sources, particularly when the deficiency reaches severe levels

Cheung EC, Vousden KH