Most noteworthy is the ability of tanshinone IIA to decrease the levels of numerous inflammatory mediators associated with the progression of atherosclerosis, such as CRP, interleukin-6 (IL-6), tumor necrosis factor alpha (TNFα), vascular cell adhesion molecule-1 (VCAM-1), CD40, monocyte chemotactic protein-1 (MCP-1), and matrix metalloproteinase-9 (MMP-9) [8, 9]. Here, MMP9 is linked to atherosclerosis.