The essential oil of Mentha pulegium L., Lamiaceae was obtained by steam di
stillation of the herb, collected during the period of full flowering, when
0.2% was gained. The analysis of its chemical composition was performed us
ing GC and GC/MS. Twenty-two components (89.9% of the total oil) were ident
ified. The principal one was menthone (30.9%), while the other important we
re pulegone (14.1%) and neomenthol (13.8%) and caryophyllene oxide (9.0%).