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L-arginine is a semi-essential amino acid involved in numerous areas of human biochemistry, including ammonia detoxification, hormone secretion, and immune modulation.
Arginine is also well known as a precursor to nitric oxide (NO), a key component of endothelial-derived relaxing factor, an endogenous messenger molecule involved in a variety of endothelium-dependent physiological effects in the cardiovascular system.
L-ornithine is a metabolite of arginine in the body, formed as a byproduct of the action of the arginase enzyme on arginine. L-arginine is required for the body to synthesize nitric oxide, which enables the arterial system to retain its youthful elasticity.
Nitric oxide also helps to produce endothelial relaxation factor, which is needed by the arterial system to expand and contract with each heartbeat.
L-arginine may also help stimulate the immune system. Surgical or traumatic injury greatly increases the body’s need for L-arginine, a key building block to maintaining healthy tissue and bone. L-ornithine may also be used for this purpose.
Some studies suggest a combination of arginine and ornithine appear to stimulate growth hormone (GSH) based on the increase in strength and muscle mass that was produced while intensely working out.Other research evidences ornithine’s ability to stimulate GH release.
Another study showed a combination of ornithine with Acetyl-l-carnitine enhanced the GH release feedback loop. However, studies suggest that low doses of L-arginine and/or L-ornithine are unlikely to effect GH release. A minimum dose of L-arginine to promote GH release is probably 250 mg/kg of body weight.
Some studies suggest a combination of arginine and ornithine appear to stimulate growth hormone (GH) based on the increase in strength and muscle mass that was produced while intensely working out.
However, studies suggest that low doses of L-arginine and/or L-ornithine are unlikely to effect GH release. A minimum dose of L-arginine to promote GH release is probably 250 mg/kg of body weight.
Scientists have discovered that not only is NO an essential compound that helps blood circulation, but it is important to normal sexual function in both men and women. Insufficient blood flow is a major cause of incomplete erection in men.
L-Arginine has been shown to improve blood flow to the genital area by dilating blood vessels and helping the penis to enlarge to its full capacity, thus increasing the size, hardness, and frequency of erections. For women, better blood flow makes clitoral and vaginal tissues more sensitive and responsive to sexual stimulation and helps increase the possibility of reaching orgasm.
L-arginine helps your body manufacture creatine, a protein that contributes to muscle mass and power, and also helps the body get rid of creatinine, the waste product associated with this process, making it popular with weight lifters. L-arginine is a vasodilator- it dilates the blood vessels, allowing more blood to pass through at once.
That has the effect of lowering blood pressure and, in some cases, helping the body negotiate the arterial blockages that can come with conditions such as atherosclerosis. For certain patients, L-arginine can help reduce blood clots, especially in the legs.
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