dear marc, NADH stands for nicotinamide adenine dinucleotide . It is a complex 1 active enzyme in brain mitochondrial. IT IS REDUCED IN P D BRAINS. This was reported by Dr. STANLEY FAHN of COLUMBIA UNIVERSITY, in the march 1995 issue of ''MOVEMENT DISORDERS''. It is titled ANTIPARKINSONIAN THERAPIES AND BRAIN COMPLEX 1 ACTIVITY on page 312. If anyone desires a copy of this report on NADH or other studies by Dr. GEORG BIRKMAYER OF THE INSTITUTE FOR PARKINSON THERAPY in VIENNA, AUSTRIA, Please send to me your name, fax # , address and i will forward these reports to you. On october 15, 1995, there will be a PARKINSONS UNITY WALK in NEW YORK CITY. FUND THE RESEARCH FIND THE CURE FRED ZIESS P.D. 10 YEARS AGE 55