Canestrato Pugliese (Water-soluble extract)
Gentiana asclepiadea aerial parts (Methanol extract)
Thymol
Cola gigantea leaf (Ethanol extract)
Dimethyl sulfoxide (DMSO)
Eleutherine americana (Crude extract)
Eleutherine americana bulb (Ethanol extract)
Quercus infectoria (Ethane extract)
Quercus lusitanica (Ethyl acetate fraction I)
Rhizophora mucronata fruit (Ethanol extract)
Tannic acid
Terminalia sp. fruit (Ethanol extract)
Hydnophytum formicarum (Crude ethyl acetate extract)
Polyalthia debilis (Fraction C8)
Aristolochia trilobata leaf (Hexane extract)
Capsicum annuum L. cultivar Strizanka (Ethanol extract)
Gentiana asclepiadea underground parts (n-BuOH extract)
Helichrysum cymosum (Acetone extract)
Galangal (Ethanol extract)
Alpinia galanga (Extract)
Zingiber zerumbet (Extract)
5-amino-8-hydroxy-1,4-naphthoquinone (cobalt complex)
5-amino-8-hydroxy-1,4-naphthoquinone (Nickel complex)
Mallotus metcalfianus (CHCl3 subfraction D)
Plectranthus grandidentatus (non-volatile)
Lippia graveolens (Essential oil)
Penicillin (Benzylpenicillin, Penicillin G, Bicillin C-R/L-A, Pfizerpen, Wycellin)