Ageâ?¥18 years nonpregnant patients diagnosed as COVID positive (RAT or RTPCR positive) <br/ > Oxygen saturation while breathing on ambient room air less than 93% or on already on supplemental oxygen as determined by pulse oximetry measurement or clinically <br/ > Less than 15 days from symptom onset for COVID-19 <br/ > Willing to take arginine/placebo as the intervention for ten days and will provide written informed consent <br/ >

Ageâ?¥18 years nonpregnant patients diagnosed as COVID positive (RAT or RTPCR positive) <br/ > Oxygen saturation while breathing on ambient room air less than 93% or on already on supplemental oxygen as determined by pulse oximetry measurement or clinically <br/ > Less than 15 days from symptom onset for COVID-19 <br/ > Willing to take arginine/placebo as the intervention for ten days and will provide written informed consent <br/ >