New dietary supplement composition consisting of, as active ingredients:● NADH and/or NAD+● Coenzyme Q10● Vitamin C (Ascorbic Acid)● Serine and/or Phosphoserineto be used for stimulating/improving/increasing the production of natural adrenaline generation, and thus reducing sleepiness caused by particular drugs intake. The dietary supplement according to the present invention is particularly advantageous for professional drivers and people who usually take drugs with sleepiness as side effect.
