Product Description NAD is the chemical term for a molecule that reacts with oxygen in the mitochondria in every cell of your body in order to create energy to sustain every aspect of daily life. Lack of this essential cellular fuel has shown to be linked to chronic fatigue, depression, anxiety, alcohol and drug addiction, weakened immune system, headaches, sleep problems, memory disturbance, focus, and concentration abnormalities. NAD deficiency may be an unrecognized epidemic of cellular disease.* N-acetylcysteine (NAC) NAC is a dietary supplement that supports the liver and increases the production of glutathione, an important antioxidant known to reduce the toxicity that causes hangover symptoms. N-acetylcysteine (NAC) is very safe to use with no side effects. Directions Apply patch daily to an area with little or no hair, i.e., shoulder, back or hip. For best results, it is recommended to wear PatchMD patches for 8 hours. There is no additional benefit wearing the patch longer than 8 hours. Patches can be worn during sleep. Avoid using any lotion or cream in the same area as it will inhibit absorption. Patch is not waterproof. It is ok to wear multiple patches at a time. .