Now Foods L-Arginine 500 Mg 100 caps, nutritional supplement that helps to increase sperm motility, growth and repair of muscle and collagen synthesis

H L- Arginine is a conditionally essential basic amino acid involved primarily in the metabolism and excretion of urea and the synthesis of DNA.

H L- arginine is important for the production of growth hormone ( stimulating the pituitary gland ) , sperm production ( engaging the sperm and seminal fluid ) , to improve the subject's sensitivity to insulin, improve muscle tone , wound healing ( stimulating collagen formation ) and for maintaining healthy blood pressure levels as a means of production of nitric oxide.

Arginine is the primary ingredient used as a basis for the formation of nitric oxide. Whenever the body activates the enzyme nitric oxide synthase to convert excessive arginine to citrulline (another amino acid) , then the produced nitric oxide. This activity occurs primarily in the liver .

Many times the supplementation of L- arginine is essential. For example , people suffering with protein malnutrition or after excessive intake of lysine or burns and possibly infections may have the need arginine uptake .

The arginine deficiency symptoms include poor wound healing , hair loss , rash , constipation , and fatty liver .