Cirpusins® is the extract of Cyperus rotundus rhizomes standardized to contain Scirpusin A, Scirpusin B, and Piceatannol amounting to 6% total Stilbenoids. Stilbenoids are phenolic compounds that are purported to have several health benefits. Scirpusins are dimerized stilbenes; Scirpusin A is a dimerized resveratrol isolated for the first time from the rhizome of Scirpus fluviatilis in 1978 along with resveratrol and 3, 3’, 4, 5’-tetrahydroxystilbene (Nakajima et al., 1978).