The formula also contains L-arginine (an amino acid found in preparations for those physically active) and ginkgo biloba, ginseng and nettle extracts. Standardisation The 3 extracts found in the formulation are standardised. This means that they contain other compounds, the amount of which is carefully determined, e.g. ginseng extract contains 7% ginsenosides. These substances often determine the properties of a given ingredient.
