BIOACTIVE CHEMICALS AND PHARMACOLOGICAL SIGNIFICANCE OF IMPORTANT MEDICINAL PLANTS OF NORTH WESTERN HIMALAYA

The Indian Himalayan region (IHR) stands as a colossal storehouse of medicinal plants, boasting unparalleled biodiversity. Over countless generations, these plants have been harnessed for their curative properties, becoming an integral part of traditional healing practices. This abundance of botanical treasures holds the promise of therapeutic solutions for a multitude of ailments, with many species teetering on the brink of endangerment. These plants derive their therapeutic potency from a complex interplay of chemical compounds within their various parts. In recent years, their appeal has surged owing to their perceived advantages, notably their limited adverse side effects when compared to conventional allopathic medications. However, this newfound popularity has birthed an alarming over-exploitation. The relentless demand for medicinal plants has initiated a precarious decline in their populations. Of particular concern are the Western Himalayan medicinal species, such as Aconitum heterophyllum, Podophyllum hexandrum, Picrorrhiza kurroa, Swertia chirayita, and Valeriana jatamansi, which have permeated both national and international trade. Roots of Aconitum heterophyllum, renowned for their antipyretic, astringent, stomachic, and aphrodisiac properties, have garnered substantial attention. P. hexandrum stands out for its well-documented anti-cancerous attribute. Meanwhile, the bitter-tasting P. kurroa and S. chirayita hold immense potential as anti-diabetic agents. Given these pressing concerns and the immense therapeutic potential these plants harbor, this chapter endeavors to shed light on the looming threats confronting Western Himalayan medicinal plants. It also delves into the imperative matter of conservation, unraveling the chemistry underpinning their medicinal efficacy and exploring their vast pharmacological promise. In doing so, we strive to underscore the critical importance of preserving these invaluable botanical resources for the betterment of human health and the protection of our natural heritage.