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Sikiri spent decades looking for these compounds, collecting gastric fluid from clinics and slaughterhouses
And honestly, sick people have every right to be
Oral NAD+ does not survive digestion intact
Groups at higher risk of deficiency include older adults (due to reduced stomach acid production), people following vegan or strict vegetarian diets (as B12 is naturally found almost exclusively in animal products), individuals with pernicious anaemia or other malabsorption conditions, those taking certain medications such as metformin or proton pump inhibitors long-term, and people with significant nitrous oxide exposure (including recreational use), which can inactivate B12 in the body
Since copper on its own can do things, and you need to know whether an effect came from the intact peptide-copper complex or just from free copper ions
