Herbal preparations are the oldest method of using medicinal plants. As early as in the Stone Age, humans knew instinctively and by experience how to find a plant that would alleviate their difficulties when they fell ill. A soothing cup of herbal tea for pleasure, a scoop of herbal syrup acting locally in the throat in order to gently cover irritated fauces. And refreshing capsules with brown alga and mate tea during mental and physical efforts.