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Lungwort belongs to the genus Pulmonaria within the borage family (Boraginaceae). The botanical name is derived from the Latin word pulmo, meaning "lung." This name refers to the striking leaf markings of some species, such as spotted lungwort, which were once compared to the appearance of human lungs.
This association played an important role in the theory of signatures, a traditional doctrine in which it was believed that a plant's appearance provided clues to its intended use. Based on this line of thought, lungwort was historically used for conditions associated with the lungs.
The Dutch name lungwort is derived directly from the botanical name. Similar names also appear in other Western European languages, indicating the plant's wide cultural and historical renown.

Purple coneflower is a perennial plant native to North America and cultivated worldwide. The Latin name Echinacea refers to the Greek word echinos, meaning "hedgehog," because of its spiky flower cone. Indigenous tribes used the plant traditionally, and knowledge about it was later adopted by colonists. Today, Echinacea purpurea is often used in supplements and herbal preparations.

Siberian ginseng is a perennial plant native to Russia, Japan, Korea, and China. The roots of the plant have been used in traditional herbal medicine for centuries. Siberian ginseng is often used in supplements and herbal preparations. It is important not to confuse this species with Korean ginseng (Panax ginseng) or American ginseng (Panax quinquefolius), as they are different plants.

Astragalus (Astragalus membranaceus), also known as fleshy pod, is a plant native to Asia. Astragalus roots have been used in traditional Chinese herbal medicine for centuries. The plant is known for its characteristic pods and root structure. Astragalus is available in various forms, including dried root, powder, and capsules, and is widely used in herbal formulas and dietary supplements.