Essential oils isolated by hydro distillation from the aerial parts of Thymus fallax Fisch. & C.A. Mey. at full flowering stage, were analyzed by a combination of capillary GC and GC-MS. Ten components were identified, constituting approximately 98.7 % of the oil. The main constituents of the essential oil were carvacrol (69.2 %), p-Cymene (15.4 %), Thymol (5.3 %) and γ-Terpinene (4.5 %), respectively.
