Sorafenib is the first multi-kinase inhibitor (TKI) approved for the treatment of advanced hepatocellular cancer (HCC) and metastatic renal cell cancer (RCC) and is increasingly being used to treat patients with well-differentiated radioiodine-resistant thyroid cancer (DTC). Sorafenib demonstrates targeted activity on several families of receptor and non-receptor tyrosine kinases that are involved in angiogenesis, tumour growth and metastatic progression of cancer. Sorafenib treatment results in longterm efficacy and low incidence of life-threatening toxicities. Although sorafenib has demonstrated many benefits in patients, the adverse effects cannot be ignored. The most common treatment-related toxicities include diarrhoea, fatigue, hand-foot skin reaction and hypertension. Most of these toxicities are considered mild to moderate and manageable to varying degrees; however, cardiovascular events might lead to death. In this MiniReview, we summarize the adverse effects of sorafenib that commonly occur in patients with advanced cancers.Over the past few years, targeted therapy utilizing multi-tyrosine kinase inhibitors (TKIs) has been widely used for treatment of cancers. TKIs are designed to block specific cancer cell processes and are usually better tolerated than most conventional chemotherapeutic drugs. Sorafenib is the first orally active TKI approved by the Food and Drug Administration (FDA). Sorafenib mainly targets vascular endothelial growth factor (VEGFR1-3) and Raf kinases. Other reported targets include K-Ras, BRAF, V599E mutant BRAF, platelet-derived growth factor receptor-b (PDGFR-b), FMS-like tyrosine kinase 3 (FLT3), c-Kit and RET, and several other receptor tyrosine kinases (RTKs) via various modes of action, such as inhibition of the Ras/Raf/MAPK and PI3K/AKT/mTOR signalling pathways [1][2][3]. The anticancer activity of sorafenib thus results from a dual inhibitory effect towards angiogenesis and tumour cell proliferation. Sorafenib also possesses the function of inducing apoptosis in cancer cells by inhibiting the phosphorylation of initiation factor eIF4E and loss of the antiapoptotic protein myeloid cell leukaemia-1(Mcl-1) [4].In 2007, sorafenib was approved by the FDA for the treatment of advanced hepatocellular cancer (HCC) [5,6] and metastatic renal cell cancer (RCC) [7,8]. Oral administration of sorafenib is associated with improved quality of life and prolonged overall survival of patients [9]. Recently, the most positive phase III results were observed in well-differentiated radioiodine-resistant thyroid cancer (DTC) [10], resulting in the increased use of sorafenib to treat patients with DTC.