Collinsonia Formula from Seroyal Genestra is a dietary supplement designed to promote the healthy functioning of the intestines and liver. The main active ingredient in Collinsonia Formula by Seroyal Genestra is an extract derived from stoneroot, an herb proven effective at alleviating swollen and inflamed veins. Other ingredients include parsley and calendula, both natural remedies that alleviate inflammation, along with marshmallow root and witch hazel to reduce symptoms of digestive inflammation. The dandelion and milk thistle in this formula are also very beneficial for proper detoxification processes carried out by the liver.