Although commonly thought of as nothing more than a pesky weed, dandelion has a long history of use by human. Dandelion leaves are full of vitamins and minerals that the body requires daily - including vitamin C and D, calcium, potassium, and iron. It is totally caffeine free! Our dandelion leaf powder is ethically sourced from the very best suppliers worldwide. A bit about us.. Speedrange are a family company that have been buying and selling commodities since 1985, with over twenty years' experience in the herb and spice industry. Having worked directly with growers in Papua New Guinea and other parts of the Pacific, we are unique in having first-hand experience of sourcing only the best goods.