How does NSI® L-Tryptophan 500 mg work?
L-Tryptophan is an essential amino acid (protein building block) in human nutrition and metabolism, which cannot be synthesized by the body. Essential amino acids must be supplied through diet.

L-Tryptophan is the least abundant amino acid in the diet. This naturally occurring amino acid is plentiful in dietary proteins like chocolate, oats, bananas, dried dates, milk, cottage cheese, meat, fish, turkey, and peanuts, but its value is largely lost through cooking and processing.

L-Tryptophan acts as a natural anti-depressant. As a precursor for the mood-regulating neurotransmitter, serotonin, it is linked with feelings of pleasure and fulfillment. It is also the metabolic precursor of melatonin (neurohormone) and niacin (vitamin B3).

NSI® L-Tryptophan 500 mg can help support good health, relieve poor mood and irritability, normalize sleep, relieve cranial discomfort and muscle pain, and reduce cravings for carbohydrates.

NSI® NSI® L-Tryptophan 500 mg is better because it:
-- Is a vegetarian capsule
-- Contains the most potent and highest quality nutrients
-- Is a better value compared to other brands