Medical food. Arginine module. Nestle nutrition. Artificial flavor. Makes 1 serving. Arginaid is a medical food arginine module specially formulated for the dietary management of altered physiologic or metabolic conditions that respond to increased arginine intake. Nitrogen Information: 1 serving of Arginaid provides 4.5 grams of the amino acid L-arginine (1.4 g nitrogen); a single amino acid does not meet the dietary requirement for protein.