Article 3 astragalin controlled study 3 kaempferol 3 plant extract 3 plant leaf 3 unclassified drug 3 Animals 2 IC50 2 Mice 2 Plant Extracts 2 Plant Leaves 2 animal 2 animal experiment 2 animal model 2 chemistry 2 isoquercetin 2 metabolism 2 methanol 2 mouse 2 nonhuman 2 phytochemistry 2 quercetin 2 1h 1,2,4 oxadiazolo[4,3 a]quinoxalin 1 one 1 7,4' dihydroxy 5,3',5' trimethoxyflavonol 1 Acetic Acid 1 Acetylcholinesterase 1 Administration, Oral 1 Analgesics 1 Analgesics, Opioid 1