N-Acetyl Cysteine
N-Acetyl Cysteine is a stable form of the essential amino acid L-cysteine. Cysteine is a precursor for glutathione, an important antioxidant in the body. Cysteine also serves as a major sulfur source for many body components.

NADH (Nicotinamide Adenine Dinucleotide)
Nicotinamide Adenine Dinucleotide or NADH is also known as coenzyme 1, is the coenzymatic form of vitamin B3. NADH is involved in the production of energy in every cell. It supports healthly neurotransmitter functions.
Niacin, also known as nicotinic acid or vitamin B3, is a water-soluble vitamin that plays an essential role in energy metabolism in the living cell and DNA repair. The designation vitamin B3 also includes the corresponding amide nicotinamide, or niacinamide.
NLEA Serving
An NLEA Serving is a standardized serving size that arose from the U.S. government's Nutrition Labeling and Education Act. The NLEA regulations are governed by the FDA, and restrict the typical serving size that can be claimed on a U.S. Nutrition Facts label. The intent of this regulation is to deter food manufactures from misleading the public by using serving sizes that are unrealistically small or large. F

Food manufacturers must now report serving sizes that are reasonably close to the NLEA standard. This standard is different for each type of food, and applies to virtually all foods except meats.
Norepinephrine is a hormone produced by your adrenal glands. Norepinephrine is important for many bodily activities, including brain function.
Nutrient Density
Nutrient density is the measurement of the amount of a nutrient per fixed portion of food.