Nicotinamide Riboside is a form of vitamin B3 that the body converts into NAD+, a molecule essential for producing energy inside cells. NAD+ levels decline naturally with age.
This is why NR is among the most studied ingredients in the longevity field, with a role in supporting cellular vitality, mitochondrial function and the normal repair processes that take place in the body every day, contributing to general wellbeing over time.
Nicotinamide Riboside is one of the natural forms of vitamin B3, present in trace amounts in cow milk and also available as a synthesized ingredient for nutraceutical use.
Its distinctive feature is the metabolic route it follows: NR is converted into NAD+ through a short, dedicated pathway, which makes it one of the most efficient dietary precursors of this coenzyme.
NR is a direct precursor of NAD+, a cofactor of sirtuins and PARP enzymes involved in DNA repair and mitochondrial function.
Because NAD+ availability declines with age, restoring the pool of this coenzyme is one of the most actively investigated strategies in longevity research. Sirtuins in particular depend on NAD+ to operate, which links this molecule to the regulation of cellular metabolism and to the response to cellular stress.
NR is formulated in capsules, tablets and sublingual powders, and is a cornerstone ingredient of the “NAD+ booster” supplement category.
It is frequently combined with TMG/Betaine to balance the consumption of methyl groups associated with NAD+ metabolism, and with Resveratrol, which acts on the same sirtuin axis from a complementary angle.
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