In the first 12 trials, 20 to 40 gm. of L-arginine monohydrochloride (95 to 190 milliequiv. of chloride) was administered intravenously in a 5 per cent solution over a period of two to four hours.

L-arginine HCL attaches the amino acid to hydrogen chloride (HCL). HCL has a neutral pH, which in turn neutralizes the otherwise bitter taste of L-arginine when in powder form.

L-arginine HCL attaches the amino acid to hydrogen chloride (HCL). HCL has a neutral pH, which in turn neutralizes the otherwise bitter taste of L-arginine when in powder form.