Sclareol is a diterpene originally isolated from S. sclarea and has diverse biological activities.^1,2,3 It is active against A. naeslundii, P. gingivalis, and P. anaerobius bacteria (MICs = 12.5, 6.2, and 3.1 μg/ml, respectively).¹ Sclareol (5 and 10 μg/ml) inhibits LPS-induces increases in nitric oxide (NO) production and COX-2 and inducible nitric oxide synthase (iNOS) protein levels in RAW 264.7 macrophages.² It reduces λ-carrageenan-induced hind paw edema in mice when administered at a dose of 10 mg/kg. It inhibits the growth of HCT116 cells (GI50 = 34 μM), as well as induces apoptosis and halts the cell cycle at the G1 phase in HCT116 cells when used at a concentration of 100 μM.³ Liposome-encapsulated sclareol (275 mg/kg, i.p.) reduces tumor growth in an HCT116 mouse xenograft model.