What it is
Nicotinamide is an amide form of vitamin B3 used to make NAD and NADP; it differs from nicotinic acid in flushing and lipid effects.
Core function and why it is studied
The core connection is the recognized physiological role described above. Research therefore examines vitamin B3 adequacy and cellular-energy pathways, while supplement value still depends on baseline intake or status, the form used, and the outcome being measured.
What the evidence means
The physiological role is well established. Supplement benefit is most predictable when intake or status is inadequate; more is not automatically better.
How to compare products
Compare the exact chemical or stereoisomer form, amount per serving, other active ingredients, excipients, and batch specifications.