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Oral Supplements : Oral supplements are widely available, and research suggests that, at high doses, they can be just as effective as injections for correcting deficiency[21], making them a viable alternative for many individuals

Studies in hundreds of participants have found that higher blood levels of 1-methylnicotinamide (a marker related to NNMT activity) correlated with greater NNMT in adipose tissue, and were inversely related to insulin sensitivity

Seek medical advice if diarrhoea persists beyond 7 days, contains blood or mucus, or accompanies severe abdominal pain or weight loss

It is studied for effects on glucose metabolism, mitochondrial efficiency, and NAD+-dependent pathways