Medically used cannabis is an effective remedy that has been utilized in traditional medicine systems worldwide since ancient times. The range of diseases, symptoms, and ailments that can be treated with hemp is particularly extensive. No other plant known to humanity exhibits such a diverse spectrum of effects as cannabis – and this is achieved without causing significant side effects. For this reason, an increasing number of patients, doctors, therapists, pharmacists, and pharmacologists prefer medications based on cannabis and cannabinoids. After decades of repression and the war on drugs, hemp is gradually re-establishing itself as a beneficial medicine; in many countries, it has already been legalized again. The book summarizes the current data and facts about cannabis and cannabinoids as remedies and sheds light on the scientific foundations.