Protein and Fitness

Arginine is a conditionally essential basic amino acid that is involved primarily in urea metabolism and excretion. Arginine also plays a role in DNA synthesis and protein production. It is an important precursor of nitric oxide (NO) and with that plays a role in the dilation of blood vessels.

NOW Foods L-Arginine is a pharmaceutical grade, conditionally essential basic amino acid involved primarily in urea metabolism and excretion, as well as DNA synthesis.

Get fundamental amino acid nutrition for less with Swanson L-Arginine. Our L-arginine makes an economical and effective addition to your dietary plan, especially if you are interested in supporting cardiovascular and immune system health. Each convenient capsule delivers 500 mg of free-form L-arginine.

Get fundamental amino acid nutrition for less with Swanson L-Arginine. Our L-arginine makes an economical and effective addition to your dietary plan, especially if you are interested in supporting cardiovascular and immune system health. Each convenient capsule delivers 500 mg of free-form L-arginine.

Life extension enthusiasts, body builders and health proponents have been telling the world of this amino acid combination for quite a few years now, and the science is catching up to their claims. Arginine is integral to the production of nitric oxide. It's an important substance involved with everything from cardiovascular function to muscular energy. Ornithine metabolizes to arginine in the body, and it has its own unique, nourishing influence on the body. Swanson L-Arginine & L-Ornithine brings you the proper two-to-one combination in free form for optimum results.

Swanson L-Arginine & L-Ornithine explores the many benefits of two potent amino acids. Arginine is integral to the production of nitric acid. It's an important substance involved with everything from cardiovascular function to muscular energy. Ornithine metabolizes to arginine in the body, and it has its own unique, nourishing influence in the body.

Get fundamental amino acid nutrition for less with Swanson L-Arginine. Our L-arginine makes an economical and effective addition to your dietary plan, especially if you are interested in supporting cardiovascular and immune system health. Each convenient capsule delivers 500 mg of free-form L-arginine.

Support peak performance with this duo from Source Naturals. L-Arginine and L-Citrulline Complex features two amino acids bundled into a single powerful supplement. L-Arginine is an important factor in muscle metabolism and is a precursor for nitric oxide, which promotes healthy circulation by relaxing blood vessels. L-Citrulline helps the body rid itself of ammonia, a by-product of exercise. This clearing enables the body to recover after a workout.

Contains no yeast, dairy, egg, gluten, soy or wheat. Contains no sugar, starch, salt, preservatives, or artificial color, flavor or fragrance.

For a great aid in metabolism and exercise, try Source Naturals L-Arginine L-Citrulline Complex! L-Arginine is a precursor to nitric oxide, helping the body metabolize muscle and increase circulation by relaxing blood vessels. L-Citrulline enables the body to recover after a workout due to clearing it of ammonia, a byproduct of exercise.

Contains no yeast, dairy, egg, gluten, soy or wheat. Contains no sugar, starch, salt, preservatives, or artificial color, flavor or fragrance.

Source Naturals L-Arginine L-Citrulline Complex delivers two amino acids bundled into a single powerful supplement. L-Arginine is an important factor in muscle metabolism and is a precursor for nitric oxide, which promotes increased circulation by relaxing blood vessels. L-Citrulline helps the body rid itself of ammonia, a by-product of exercise. This clearing enables the body to recover after a workout.

Contains no yeast, dairy, egg, gluten, soy or wheat. Contains no sugar, starch, salt, preservatives, or artificial color, flavor or fragrance.

L-Carnitine from NOW Foods is a non-essential amino acid that helps to maintain overall good health by facilitating the transfer of fatty acid groups into the mitochondrial membrane for cellular energy production. It naturally occurs in red meat and other animal source foods, but we recommend supplementation to obtain optimal levels of this excellent amino acid. NOW L-Carnitine is the purest form, clinically tested, and vegan (non-animal sourced).

L-Carnitine is a non-essential amino acid that helps to maintain overall good health by facilitating the transfer of fatty acid groups into the mitochondrial membrane for cellular energy production. It naturally occurs in red meat and other animal source foods; but we recommend supplementation to obtain optimal levels of this excellent amino acid. NOW L-Carnitine is the purest form, clinically tested, and vegetarian (non-animal source.

L-Carnitine naturally occurs in red meat and other animal source foods, but we recommend supplementation to obtain optimal levels of this excellent amino acid. NOW L-Carnitine is a non-essential amino acid that helps to maintain overall good health by facilitating the transfer of fatty acid groups into the mitochondrial membrane for cellular energy production. NOW L-Carnitine is the purest form, clinically tested and vegetarian (non-animal sourced).

NOW Foods' 500 mg Vcaps feature L-Carnitine, which naturally occurs in red meat and other animal-source foods. We recommend supplementation to obtain optimal levels of this excellent amino acid. It is a non-essential amino acid that helps to maintain overall good health by facilitating the transfer of fatty acid groups into the mitochondrial membrane for cellular energy production.

Unlock your potential for a lean, muscular body with Swanson L-Carnitine! A favorite among dieters and bodybuilders, this amazing amino acid helps the body metabolize fat to energize muscles for effective, productive workouts.

L-carnitine is a cofactor—a type of molecule or compound needed by the body to complete enzymatic reactions—in the energy production process. It also helps to transport waste out of your cells, another factor in post-exercise muscle recovery.

Emerging research also suggests that L-carnitine may offer unique benefits for mature adults, easing fatigue and supporting cognitive function.¹

Swanson L-Carnitine delivers 500 mg per serving to promote energy, a healthy body composition and more.

1) J. Funct. Morphol. Kinesiol. 2021, 6(4), 93; https://doi.org/10.3390/jfmk6040093