Inclusion Criteria:  Adult patients (>18 years old). Confirmed COVId-19 infection with PCR. Moderate covid patients who with Sp02 <92 % CT chest infiltration more than 50 % Presented to the hospital within 24 to 48 hours CBC (WBCs may be normal or high or low with lymphocytopenia is present, decreased hemoglobin, neutrophilia with neutrophil/lymphocyte ratio > 3.1)  Exclusion Criteria:  Hepatic or renal failure: (Alanine transaminase or Aspartate transaminase >3 times above the normal limit) History or evidence of long QT segment on Electrocardiogram, Pregnancy or breast-feeding mother Patient on mechanical ventilator. Patient who received vaccine. Patients receiving antidepressants, opioids, (e.g., anticonvulsants, clonazepam).