Table 2.

Antiviral assay based on cytopathic effects denoted by degree of inhibition upon treating the DENV1-infected Vero E6 cells with maximum non-toxic dose of six medicinal plants.

Plant species	Degree of inhibition
Andrographis paniculata	+++
Momordica charantia	++
Cymbopogn citratus	+
Ocimum sanctum	+
Citrus limon	-
Pelargonium citrosum	-

+++ 75% inhibition, ++ 50% inhibition, + < 50% inhibition, - no inhibition