following husband's diagnosis of PD in 04, initial reasearch led me to an article by Drs. Bruce Cohen and Deborah Gold, "Mitochondrial Cytopathy in Adults: What we Know Now". their recommendations for supplements and vitamins included nicotinamide-and from further research (and I am unsure what I based this decision upon) decided upon using NADH (the form of B3 found in Complex 1 of the mitochondrial electron transport chain). an expensive way of intaking B3, though the niacin caused flushing...wondering now if nicotinamide form would suffice
http://www.ccjm.org/pdffiles/COHEN701.PDF