Plant extracts-Therapeutic use Materia medica, Vegetable 2 Phytochemicals-Physiological effect 2 Phytotherapy-Methods 2 Plants, Medicinal 2 Aged 1 Aging-Drug effects 1 Aging-Physiological aspects 1 Aging-Physiology 1 Anti-Anxiety agents 1 Flavonoids-Pharmacology 1 Flavonoids-Physiological effect 1 Flavonoids-Therapeutic use 1 Galantamine 1 Kava 1 Kava (Beverage) 1 Kava plant 1 Kava plant-Therapeutic use 1 Liliaceae 1 Narcissus (Plants) 1 Narcissus (Plants)-Industrial applications 1 Narcissus (Plants)-Therapeutic use 1 Nutrition 1 Nutritive Value 1 Phenols-Pharmacology 1 Phenols-Physiological effect 1 Phenols-Therapeutic use 1 Phytotherapy 1 Plant extracts-Chemistry 1 Plant extracts-Pharmacology 1