Amino Acids
l-Arginine (180 capsules)
Amino acid precursor of nitric oxide associated with promoting cardiovascular health, immune support, sexual function, and memory.*
l-Arginine (90 capsules)
Amino acid precursor of nitric oxide associated with promoting cardiovascular health, immune support, sexual function, and memory.*
L-Arginine, 60 Caps
L-Arginine is an important amino acid for cardiovascular health and circulation by supporting nitric oxide formation.
L-Carnitine
L-Carnitine is an essential cofactor for several enzymes necessary for transport of free long chain fatty acids. It is intended to provide nutritive support for healthy cardiovascular function, energy, musculoskeletal function, and metabolic pathways.*
l-Carnitine (120 capsules)
Highly stabilized form of l-carnitine supporting cardiovascular health and recovery from exercise‡
l-Carnitine (60 capsules)
Highly stabilized form of l-carnitine supporting cardiovascular health and recovery from exercise‡
L-Carnitine - 450mg, 60 Caps
L-Carnitine is an important amino acid for cardiovascular health, mitochondrial support, and healthy utilization of fats by the body.
l-Carnitine Fumarate (120 capsules)
Supports fat metabolism, endurance during training and the healthy functioning of the heart and muscles*
l-Glutamine Powder
Nutritionally supports the mucosal lining and the healthy functioning of the gastrointestinal tract, as well as lean muscle mass*
l-Glutamine, 500mg (90 capsules)
Nutritionally supports the mucosal lining and the healthy functioning of the gastrointestinal tract, as well as lean muscle mass*
L-Glutamine, 60 Caps
L-Glutamine helps maintain intestinal integrity by supporting the health of the mucosal lining of the gastrointestinal tract.
l-Glutamine, 850 mg (250 capsules)
Nutritionally supports the mucosal lining and the healthy functioning of the gastrointestinal tract, as well as lean muscle mass*
l-Glutamine, 850 mg (90 capsules)
Nutritionally supports the mucosal lining and the healthy functioning of the gastrointestinal tract, as well as lean muscle mass*
L-histidine (500 mg), 60 capsules
L-Histidine supplies 500 mg of the amino acid in each capsule.
L-Histidine Guard, 60ct
PERQUE L-Histidine Guard™ supplementation can help restore optimum stomach acid production and in turn stimulate the secretion of gastric juices such as pepsin and hydrochloric acid.
L-Histidine Guard, 60ct (EXPIRES 03-2025)
PERQUE L-Histidine Guard™ supplementation can help restore optimum stomach acid production and in turn stimulate the secretion of gastric juices such as pepsin and hydrochloric acid.
l-Lysine (270 capsules)
Maintains healthy arginine production and supports the body's natural defenses.*
l-Lysine (90 capsules)
Maintains healthy arginine production and supports the body's natural defenses.*
L-Lysine, 100 Caps
​L-Lysine supports immune function and the body’s natural defenses including skin integrity around the lips.
L-Lysine, 120 Caps
L-Lysine is a basic building block of protein within the body. It is an essential amino acid in that it is required for human nutrition, but is not produced by the body.
l-Methionine
Liver and tissue support*
L-serine (500 mg), 60 capsules
L-Serine supplies 500 mg of the amino acid in each capsule.
l-Theanine (120 capsules)
Promotes relaxation; helps to moderate occasional stress*
l-Theanine (60 capsules)
Promotes relaxation; helps to moderate occasional stress*
L-Theanine, 60 Caps
L-Theanine is a naturally occurring amino acid found in green tea and is a derivative of glutamic acid, a major neurotransmitter in the brain.
l-Tryptophan (180 capsules)
Enhances serotonin synthesis to support emotional well-being and restful sleep*
l-Tryptophan (90 capsules)
Enhances serotonin synthesis to support emotional well-being and restful sleep*