Forests have long served as humanity?s earliest pharmacies, offering a wide range of medicinal resources from trees. Traditional systems like Ayurveda, Traditional Chinese Medicine, and African ethnobotany rely on tree parts?bark, leaves, roots, fruits, and seeds?for treating diseases. Today, interest in herbal medicine is growing due to the demand for natural and affordable healthcare. Medicinal trees contain bioactive compounds such as alkaloids, flavonoids, tannins, and essential oils, which provide antimicrobial, antiinflammatory, antioxidant, and immune-boosting effects. Modern research supports many traditional uses, with plant-based drugs like artemisinin and taxol proving their medical value. Important medicinal trees include neem, amla, arjun, eucalyptus, ashoka, and tulsi, used in various forms like decoctions, powders, oils, and infusions. Global organizations, including the World Health Organization, promote integrating traditional medicine into healthcare systems, reflecting its rising global importance. However, medicinal trees face threats from deforestation, overexploitation, and climate change. Sustainable practices such as agroforestry, controlled harvesting, and community involvement are crucial for their conservation. In conclusion, medicinal trees are essential for human health and sustainable medicine. Protecting and utilizing them responsibly will support future healthcare advancements and biodiversity conservation.