Home > Amino Acids
Sort By:
Page of 1
N-Acetyl-L-Cysteine (NAC)
N-Acetyl-L-Cysteine (NAC)
Retail Price $14.00
Retail Price: $14.00
Sale Price: $10.50
Savings: $3.50

  • N-Acetyl-L-Cysteine
  • 600 mg 60 vegetarian capsules
  • Item# 01534

L-cysteine is a conditionally essential amino acid, one of only three sulfur-containing amino acids, the others being taurine (which can be produced from L-cysteine) and L-methionine (from which L-cysteine can be produced in the body by a multi-step process). Cysteine plays a role in the sulfation cycle, acting as a sulfur donor in phase II detoxification and as a methyl donor in the conversion of homocysteine to methionine. Cysteine also helps synthesize glutathione, the body’s most important intracellular antioxidant and a vital detoxifier.

N-acetyl-L-cysteine (NAC) is the acetylated form of L-cysteine that has been used to break up pulmonary and bronchial mucous. It is very efficiently absorbed and has been shown to protect cells directly and support the immune system. NAC is an antioxidant and a free radical-scavenging agent that increases intracellular glutathione at the cellular level. NAC can act as a precursor for glutathione synthesis as well as a stimulator of the cytosolic enzymes involved in glutathione regeneration. NAC has been shown to protect against oxidative stress-induced neuronal death in cultured granule neurons.

Optimized Carnitine with GlycoCarn
Optimized Carnitine with GlycoCarn
Retail Price $36.00
Retail Price: $36.00
Sale Price: $27.00
Savings: $9.00

  • Optimized Carnitine with Glycocarn®
  • 60 vegetarian capsules

Lower cellular energy production is an inevitable part of aging. Carnitine, an amino acid derivative, is found in nearly all cells of the body, promoting the burning of fatty acids for fuel in the mitochondria. Cellular energy production declines as we age. So Life Extension has developed state-of-the-art products that provide optimized, third generation forms of carnitine that help transport fatty acids right to the heart of your energy-producing mitochondria and produce cellular energy faster. And that boost in cellular function can help provide a quicker recovery after exercise and less muscle fatigue during exercise. It may also benefit your brain, heart and central nervous system right along with your muscles.

Super Carnosine
Super Carnosine
Retail Price: $40.00
Sale Price: $27.00
Savings: $13.00

  • Super Carnosine
  • 500 mg 60 vegetarian capsules

Carnosine is a multifunctional dipeptide made up of the amino acids beta-alanine and L-histidine. It is found both in food and in the human body. Long-lived cells such as nerve cells (neurons) and muscle cells (myocytes) contain high levels of carnosine. Muscle levels of carnosine correlate with the maximum life spans of animals. Carnosine has a number of antioxidant properties and has been shown to be an anti-glycating agent.

This nutrient has the ability to suppress formation of advanced glycation end products (AGEs) and inhibit the formation of reactive oxygen species (ROS), a culprit in oxidative stress that can lead to age-related conditions. Carnosine levels decline with age. Muscle levels decline 63% from age 10 to age 70, which may account for the normal age-related decline in muscle mass and function.

Acetyl-L-Carnitine Arginate
Acetyl-L-Carnitine Arginate
Retail Price $59.00
Retail Price: $44.25
Savings: $14.75

  • Acetyl-L-Carnitine Arginate
  • 100 vegetarian capsules

A major cause of aging is a reduction in the energy-producing components of the cell, resulting in reduced cellular metabolic activity, and the accumulation of cellular debris. L-carnitine helps maintain cellular energy metabolism by assisting in the transport of fatty acids from the cytosol into the mitochondria within the cell, where fats are oxidized to produce the cellular energy (adenosine triphosphate or ATP).

The acetylated form of L-carnitine (Acetyl-L-carnitine) facilitates the release and synthesis of acetylcholine by donating its acetyl group to the production of acetylcholine, an important neurotransmitter. Acetyl-L-carnitine also enhances the release of dopamine from neurons and helps it bind to dopamine receptors.

ArginoCarn® is a patented form of acetyl-L-carnitine dihydrochloride that is molecularly bonded to the amino acid arginine and known as the AminoCarnitine® generation. Cell studies suggest that it can stimulate the outgrowth of neurites.

Acetyl-L-carnitine is as effective as L-carnitine in carrying fatty acids across the membrane into the cell where they are burned as energy, but also promotes optimal brain health. With the discovery of acetyl-L-carnitine arginate, the benefits of acetyl-L-carnitine can now be greatly augmented.