BHA (E 320) is a synthetic antioxidant authorized as a food additive. BHA is a mixture of two isomers: 2-tert-butyl-4-hydroxyanisole and 3-tert-butyl-4-hydroxyanisole. BHA is known to have various beneficial activities such as antioxidant activity, anti-inflammatory effects, and anticancer potential although some reports suggested that this reagent induces cytotoxicity. In general, the majority of the genotoxicity studies indicate a lack of potential for BHA to induce point mutations or to interact with or damage DNA. It was banned in Japan in 1958, and it was recommended that it be banned in the UK, however, due to industry pressure it was not. The antioxidant properties of 3-tert-butyl-4-hydroxyanisole are achieved via inhibition of ROS generation. The experiments on mice have shown that pretreatment with compound prevented apoptotic cell death induced by oxidative stress in mouse hepatocytes that may be beneficial for treating liver diseases caused by oxidative stress.