Amino Acids

Collagen is the most abundant protein in the body. It is key for all connective tissue (bone, skin, muscle, cartilage, tendons and ligaments). It provides the infrastructure for our entire musculoskeletal system making it essential for maintaining mobility. Ninety percent...

Product Information Carnitine and its derivatives exist in a carnitine “pool” in the body. Cellular enzymes and transporters rapidly convert the carnitine to the required form and transport it to the tissues. Carnitine and its derivatives play a key role...

Gamma-aminobutyric acid (GABA) is a natural calming agent of the brain, often viewed as the brain’s “braking system”. When we become overwhelmed with stress the brain typically responds by producing more GABA, or pumping the brakes.GABA’s foremost mechanism of action...

Arginine is a conditional amino acid, which means it can be manufactured by the body. However, in times of illness and stress, more may be needed than the body can produce. Arginine is found in foods such as dairy, meat,...

L-tyrosine is an amino acid which helps restore dopamine and norepinephrine, two neurotransmitters important for maintaining mood, and which become depleted by stress, including prolonged work or exercise, exposure to cold, and sleep deprivation. Supplementing with Natural Factors L-Tyrosine helps...

Micronized L-Glutamine 5 g 300 g Per Container (SKU 2804) Accelerates recovery time, increases energy, and reduces the risk of infection following prolonged or intense exercise Supports muscle recovery and growth, especially following strenuous exercise Naturally boosts the immune system, helping...

N-Acetyl-L-Cysteine 600 mg 60 Vegetarian Capsules (SKU 2818) Scavenges free radicals and reduces oxidative stress Supports immune system health Replenishes depleted glutathione stores Aids respiratory health Reduces the frequency of flu-like symptoms in adults over 65 Overview N-Acetyl-L-Cysteine (NAC) from...

Of the eight essential amino acids that cannot be produced by the body, the three branched-chain aminos Leucine, Isoleucine and Valine are of key importance. Based on their unique structure, activity, storage and metabolism, BCAA's have become a staple in...

NOW® Brewer’s Yeast has several naturally occurring vitamins and minerals, with most notably B-vitamins. In addition, brewer's yeast offers other components, such as amino acids and beta-glucans. No synthetic vitamins are added to the yeast during processing. NOW® Brewer’s Yeast is a...

Promotes Relaxation Eases Nervous Tension GABA (gamma aminobutyric acid) is a non-essential amino acid found mainly in the human brain and eyes. It is considered an inhibitory neurotransmitter, which means it regulates brain and nerve cell activity by inhibiting the number...

Glutathione is a tripeptide amino acid produced in the liver primarily from cysteine. It acts as a cellular antioxidant by inhibiting free radical formation. Glutathione has been called the master antioxidant, because it recycles the antioxidants vitamins C and E...

Amino Acid Conditionally Essential Amino Acid Premium Grade  L-Arginine is a conditionally essential basic amino acid involved primarily in urea metabolism and excretion, as well as DNA synthesis.* Ingredients  Nutrition Facts                                                                  Serving Size 2 Capsules  Servings Per Container...

Purest Form, Clinically Tested Transports Fatty Acids Boosts Cellular Energy* A Dietary Supplement Vegetarian Formula             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...

SUPPORTS PROTEIN METABOLISM Healthy Protein Balance A Dietary Supplement Vegetarian / Vegan  Citrulline is a non-essential amino acid that is an important intermediate in the urea cycle, functioning along with other amino acids to rid the body of ammonia, a byproduct of protein metabolism....

Promotes Healthy Skin, Hair and Nails* With Vitamin B-6 and C   NOW® L-Cysteine is a non-essential amino acid that is an important component of hair, nails and the keratin of the skin. LCysteine stabilizes protein structure and aids in the...

Glutamine has recently been the focus of much scientific interest. A growing body of evidence suggests that during certain stressful times, the body may require more glutamine than it can produce. Under these circumstances Glutamine may be considered a "conditionally...

Neurotransmitter Support Premium Grade Supports Mental Alertness Healthy Glandular Function*  L-Tyrosine is a non-essential amino acid that plays an important role in the production of neurotransmitters dopamine and norepinephrine. In addition, because LTyrosine is necessary for the synthesis of thyroid hormone and epinephrine...