The therapeutic value of the phenolic component and pure thymol was well known; this study comprised the extraction of crude phenol from two plants (Thymus vulgaris and Artemisia annua) which contain thymol with pure thymol and evaluate their effect on hematological and histological by using three different concentrations of each plant extract and pure thymol to tested them on lab mice. All the mice were allowed free access to water and feed for 21 days in laboratory conditions; orally, pure water was administered to the control mice (group I), while groups II, III, and IV were given orally with T. vulgaris, A. annua, combination of last two crude phenol plant extract 50:50 and pure thymol respectively. The levels of CHO, TRI, and HDL were significantly reduced in A. annua and T. vulgaris crude phenolic extract at 20 mg/ml as compared to the control treatment, while pure Thymol at 10 mg/ml gave the best result in reducing the levels of CHO, TRI, and HDL. In comparison to the control group, serum levels of liver enzymes in groups treated with in A. annua, T. vulgaris extract, and pure Thymol were substantially reduced in concentration: 20, 10 and 30 mg/ml, respectively.
