Hydroxychloroquine is an antimalarial drug that is used in the
elimination of covid -19 because it decreases the virulence of
virus by preventing the fusion of virus with the human cells .it
has no effect on killing the virus directly like an antiviral drug
. It does decrease the viral load in the body so along with the
better immunity the disease can be brought down easily .
Azithromycin is broad spectrum antibiotics used in treating
upper respiratory infections and pneumonia . So it decreases the
respiratory effects caused by the virus .
So combination of HCQS and azithro is considered to be a
synergistic action against covid virus . It is just proposed to
decrease the severity of the disease and it is not clinically
proven