Complexed into the Fulvic, nucleic and amino acid team are innumerable and essential minerals and rare earth elements. They are amorphous high molecular weight substances. They are not manufactured and they are natural compounds-micro and macronutrients from plants, phytochemicals. They are concentrated and transformed and are rock like, inert or fossilized. From yellow to brown to dark coloured they remain truly organic. They also contain silica as a part of their excipients. The flavonoid structure comes entirely from microbial action on ancient plant deposits. They contain sodium, ammonium or potassium humates and are highly hygroscopic. They will therefore never have the same colour. The uroeza of ammonium chloride, which assists with increased elimination of toxins and to prevent kidney stones or bladder stones (listed in the veterinary drug handbook as favourable), may give the product a slight smell upon opening the container. We however use a sodium Fulvic Acid and a smell is unlikely and not offensive to a horse.