Metabolic Cofactor Supplementation in Alzheimer's Disease (AD) and Parkinson's Disease (PD) Patients

Dietary supplement consisting of serine, L-carnitine tartrate, N-acetylcysteine and nicotinamide riboside. Subjects in active treatment will receive dietary supplementation with N-acetylcysteine, L-carnitine tartrate, nicotinamide riboside, and serine, administered as a mixture. Half dosage of the co-factors will be given for two weeks (one dose taken just after dinner), and full dosage for 8 weeks (two equal doses taken just after breakfast and dinner).

As placebo, sorbitol (5g) flavoured with strawberry aroma and colouring agent will be given.