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Standardized to 0.3% Hypericins for Emotional Well-BeingHerbal SupplementApproved by Michael Tierra L.Ac O.M.D.St. John’s wort has become one of the primary botanicals used to support mental well-being. Planetary Herbals Full Spectrum™ St. John’s Wort Extract combines an extract standardized to hypericins with an extract of St. John’s wort aerial parts. Each tablet yields a minimum of 1.5 mg of hypericins.