Table 1. Screening of plant extracts for anti-DENV activity.

No.	Name of Plant	Part used a	Antiviral Activity b
1	Aconitum heterophyllum	Rhizome	-
2	Andrographis paniculata	Whole plant	-
3	Azadirachta indica	Bark	-
4	Cedrus deodara	Resin	-
5	Cissampelos pareira	Aerial part	+
6	Coptis teeta	Root	+
7	Cyperus rotundus	Rhizome	-
8	Desmodium gangeticum	Whole plant	+
9	Enicostemma littorale	Whole plant	-
10	Fumaria indica	Whole plant	+
11	Ocimum sanctum	Whole plant	-
12	Phyllanthus amarus	Whole plant	+
13	Picrorhiza kurroa	Rhizome	±
14	Premna mucronata	Bark	+
15	Swertia chirayata	Whole plant	-
16	Terminalia chebula	Fruit	+
17	Tinospora cordifolia	Stem	+
18	Aloe vera	Leaf	-
19	Citrullus colocynthis	Root	-

^aMethanolic extracts were prepared using parts of the plant mentioned in Ayurvedic literature

^bAntiviral activity against DENV-3 screened using Type-1 assay. “+” indicates active extract (IC₅₀ <25μg/ml); “±” indicates borderline extracts (IC₅₀ = ~25μg/ml); “-” indicates inactive extract (IC₅₀ >25μg/ml)