Support healthy function of the respiratory system with Grindelia liquid extract from Herb Pharm. We prepare our Grindelia Extract from the leaf & flower of Grindelia spp. plants which are Certified Organically Grown without the use of chemical fertilizers, pesticides or herbicides or are Custom Wildcrafted in their wild native habitat in California's Sierra Nevada Mountains. To assure optimal extraction of Grindelia's bioactive compounds, the plants are hand-harvested in mid-summer, are carefully shade-dried to retain their full color and aroma, and are then thoroughly extracted.