Khat Induced Toxicity: Role on Its Modulating Effects on Inflammation and Oxidative Stability

Table 2

Inhibitory activities of khat on the activated NO production in RAW 264.7 macrophages. Quercetin was used as a standard drug.

Khat Concentration (μg/mL)	NO (μM)	% NO inhibition	% Cell viability
30	0.78 ± 0.21	87.5	80
15	1.3 ± 0.05	80	78
7.5	2.9 ± 0.09	54	70
3.75	5.73 ± 0.03	8	68
Control	6.27 ± 0.28