HerbaVital contains Polygonum cuspidatum, Pine Bark, Korean Ginseng, Ginkgo and Milk Thistle. This combination of herbs contains many compounds including phenolic compounds (including resveratrol), procyanidins, a complex mixture of steroidal saponins (called ginsenosides), flavonoids (including ginkgo flavonglycosides), terpene lactones (including ginkgolides and bilobalide) and flavanolignans (collectively known as silymarin). All the herbs within this tablet have standardized levels of key phytochemicals to ensure optimal strength and quality. The Polygonum cuspidatum contains 36 mg per tablet of resveratrol, the Pine Bark extract contains 37.5 mg per tablet of procyanidins, the Korean Ginseng component is standardized to contain 4.2 mg of ginsenosides (calculated as Rb2 to Rb1 is NLT 0.4 by HPLC) per tablet, the Ginkgo component contains 7.2 mg per tablet of ginkgo flavonglycosides (ginkgo flavone glycosides) and 1.8 mg per tablet of ginkgolides and bilobalide and the Milk Thistle contains 48 mg per tablet of flavanolignans