pharmacognosy

Natural bioactive compounds derived from plants have been central to human medicine since antiquity. Civilizations across Asia, Africa, and the Middle East developed complex knowledge systems that preserved the therapeutic value of medicinal plants. Today, this traditional wisdom intersects with modern pharmacology, biotechnology, and clinical research, leading to a renewed focus on natural molecules as drug candidates. Scientific evidence increasingly validates the efficacy, safety, and diverse biological effects of herbal compounds, including antioxidant, anti-inflammatory, immunomodulatory, antimicrobial, anticancer, and metabolic regulatory activities. However, concerns remain regarding standardization, toxicity, regulatory gaps, and herb-drug interactions. This review explores the continuum from historical ethnopharmacology to contemporary drug discovery frameworks, highlighting major bioactive compound classes, mechanistic actions, clinical evidence, and future prospects for integrating natural molecules into evidence-based healthcare. The rediscovery of natural bioactive molecules represents not only scientific advancement but a reconnection with longstanding traditional knowledge systems that may reshape the future of global therapeutics.

The present study highlights the living condition and the ethnomedicinal knowledge of the Irulasin the Gingee hills, Villupuram District, Tamilnadu. Extensive field surveys were conducted in seven villages in Gingeetaluk. Living conditions and ethnobotanical knowledge were taken through personal interview. A total of 16 species of 11 families were documented. The present study observed that the Irulasin Gingee hills have very sound knowledge of medicinal values of plants. This type of studies may help in the pharmacological research in various dimensions.