Crataegus oxyacantha, Hibiscus sabdariffa, Morus alba, Portulaca oleracea, Rubus fruticosus, Syzygium aromaticum, Teucrium polium, Trigonella foenum-graecum, and Vaccinium arctostaphylos) were prepared using n-hexane, dichloromethane, chloroform, ethyl acetate and methanol. Methanol, dichloromethane and n-hexane extracts of S. aromaticum exerted high in vitro inhibitory potential against α-glucosidase and α-amylase with IC50 ranging from 0.3 to 1.1 and 36.2 to 41.9 µg/ml, respectively. The mentioned extracts possessed the highest total phenolic contents (139.8, 119.6 and 136.1 mg GAE/g of extract). The antioxidant activities of the extracts, measured in terms of IC50 values were 2.2, 3.9 and 0.7 µg/ml, respectively. C. zeylanicum was another traditionally used medicinal plant, which its extracts exhibited high hypoglycaemic effect by inhibition of α-glucosidase and α-amylase (IC50 ranged from 0.5 to 8.7 and 37.1 to 52.5 µg/ml, respectively). The obtained results support the traditionally use of a number of the analyzed species.