The olive leaf (Oleaceae) has been widely used in folk
medicine for several thousand years in European Mediterranean
islands and countries. Leaves are taken orally for stomach
and intestinal diseases and used as mouth cleanser, while
decoctions of the dried leaf are taken orally for diarrhoea and to
treat respiratory and urinary tract infections (Delgado-Pertinez
et al., 2000; Bellakhdar et al., 1991).