Increasing nitric oxide has become the new secret weapon for athletes and bodybuilders. The most common way to boost nitric oxide is through exercise. When you run or lift weights, your muscles need more oxygen which is supplied by the blood. As the heart pumps with more pressure to supply the muscles with blood, the lining in your arteries releases nitric oxide, which relaxes and widens the vessel wall, allowing for more blood to pass though. As we age, our blood vessels and nitric oxide system become less efficient due to free radical damage, inactivity, and poor diet, causing our veins and arteries to deteriorate. Nitric Oxide Boost is designed to support this exercise-induced natural muscle pump.* Its Triple-Action formula includes 1,000 mg of L-Arginine, 2,000 mg of L-Citrulline and 100 mg of Spectra™.

L-Arginine - for classic, old school pumps
L-Arginine is a well known amino acid that has been popular with bodybuilders and athletes for years. It is recognized as a "pump" ingredient due to its role in the synthesis of nitric oxide. L-Arginine is the main substrate (precursor) in the body's mechanism to produce nitric oxide. Supplying L-Arginine makes it easier for your body to produce nitric oxide.*

L-Citrulline - the new nitric oxide powerhouse
L-Citrulline is closely related to L-Arginine in structure. It's an amino acid that's also majorly involved in nitric oxide synthesis, but has been flying under the radar for years. Unlike L-Arginine, ingested L-Citrulline bypasses the liver. Significant amounts of ingested L-Arginine are broken down by the liver and never reach the bloodstream. L-Citrulline travels through an alternate pathway and is metabolized by the kidneys instead. In a recent clinical study, L-Citrulline supplementation increased L-Arginine levels in healthy human subjects more effectively than equivalent doses of L-Arginine.* For this reason, Nitric Oxide Boost contains more L-Citrulline than L-Arginine.

Spectra™ - ORAC 5.0 Antioxidant Support Blend
Spectra™ is a precise blend of fruit, vegetable and herbal ingredients designed to support the body's response to reactive oxygen species (free radicals). In a recent double-blind, crossover, placebo-controlled human study, 100 mg of Spectra™ was shown to support the body's response to reactive oxygen species and to increase bioavailable nitric oxide concentrations. It combats oxidative and nitrostative stress by scavenging reactive oxygen species (peroxyl radicals, hydroxyl radicals, peroxynitrite, superoxide anion, and singlet oxygen).*