Abstract: Herbal compositions that comprise one or more of extracts of hydroxycitric acid, (?) HCA and (+) HCA, from Garcinia cambogia and Hibiscus sabdariffa, and anthocyanins from Hibiscus sabdariffa; all constituent extracts at independently controlled concentrations which optionally include second therapeutic agents and pharmaceutically acceptable additives. Processes for the preparation of these herbal compositions, such processes including steps of extracting hydroxycitric acids and anthocyanins from Garcinia and Hibiscus species, reacting the hydroxycitric acid with IA and IIA group metals of periodic table, isolating the metal salt of hydroxycitric acid and drying and optionally mixing anthocyanins.

Abstract: A hydroxycitric acid concentrate prepared from Garcinia rind including 23 to 54% by weight free hydroxycitric acid, 6 to 20% by weight lactone of hydroxycitric acid, 0.001 to 8% by weight citric acid, and 32 to 70% by weight water, wherein the free hydroxycitric acid, the lactone of hydroxycitric acid and the citric acid constitute 94 to 99% by weight of total solutes dissolved in the water. Also disclosed is a method of preparing such a concentrate from Garcinia rind, as well as food products containing hydroxycitric acid.