This Bulk L-Arginine powder is pure free base form, conforms to US Pharmacopeia (USP) quality standard. There is not any additive or filler inside. It is fresh enough for use. There are 1~1.5 years shelf life available.

L-Arginine may benefit cardiovascular system, improvement of immune system and exercise performance.L-Arginine is a conditionally essential amino acid. Amino acids are the building blocks of protein. Protein is the building block of all living cells.  The benefits of L-arginine may be accounted for its role as the  precursor of nitric oxide (NO). NO is produced by all tissues of the  body and plays very important roles in the cardiovascular system, immune system and nervous system. NO is formed from L-arginine via the enzyme  nitric oxide synthase or synthetase (NOS), and the effects of NO are  mainly mediated by 3,'5' -cyclic guanylate or cyclic GMP. NO activates  the enzyme guanylate cyclase, which catalyzes the synthesis of cyclic  GMP from guanosine triphosphate or GTP. Cyclic GMP is converted to  guanylic acid via the enzyme cyclic GMP phosphodiesterase.

Characteristics: White crystalline powder, characteristic bitter taste, soluble in water.

Suggested Use: As a pure ingredient to dissolve in water, juice, or mix in smoothie, shake, or formulation, R&D (research and  development), or any other proper purpose. General use amount for an adult is 1/2 teaspoon of this powder (about 1.6 g) 1~3 times daily. An individual can adjust the serving size for some specific purposes. If for direct consumption, some flavor or sweetener could be used to mask its bitter taste.

Storage Conditions: In a tightly sealed container, store in cool and dry place, keeping away from strong light and heat.

Size options: Kinds of packing sizes are available. Please choose above to order.