Hedeoma oil, also known as American pennyroyal or mock pennyroyal oil, is a sweet-scented essential oil derived from the leaves and flowers of the Hedeoma plant. It has been widely used in traditional medicine for its anti-inflammatory, antispasmodic, and digestive properties. Apart from its scientific name, Hedeoma pulegioides, the oil is also known by various other synonyms such as squaw-mint, mosquito plant, and tick weed. Its minty aroma and numerous health benefits make it a popular ingredient in aromatherapy, cosmetics, and insect repellents. However, caution should be exercised when using hedeoma oil as it can be toxic if ingested in large quantities.