💊Medicinal and Aromatic Plants — Fundamentals

India’s traditional medicine systems — Ayurveda, Siddha, and Unani — have relied on medicinal plants for thousands of years. Today, the modern pharmaceutical industry continues to draw from this ancient knowledge: an estimated 25% of all prescription drugs are derived from plant-based compounds. Understanding which plants produce which medicinally active compounds, and how to cultivate them, is fundamental knowledge for agriculture professionals.

• Medicinal plants are those which are rich in secondary metabolites and are potential source of drugs. Secondary metabolites are organic compounds produced by plants that are not directly involved in growth or reproduction but serve important ecological functions such as defense, attraction, and protection. These include compounds like alkaloids, flavonoids, terpenoids, and glycosides, which form the chemical basis of many modern medicines.

• Highest number of medicinal spp. are under family – Asteraceae. This is one of the largest families of flowering plants, also known as the daisy or sunflower family. It includes plants like chamomile, echinacea, and artemisia, all of which have well-documented medicinal properties.

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• Maximum demand in the world market: Senna leaves, Isabgol seeds and Cassia tora seeds. These three plant products dominate global trade in medicinal plant materials due to their widespread pharmaceutical applications — Senna as a laxative, Isabgol (psyllium) as a digestive aid and bulk-forming fiber, and Cassia tora for its use in gelling agents and traditional remedies.

• India is first largest producer of Isabgol and Senna. India holds a dominant position in the global production of these two crops, largely due to favorable arid and semi-arid climatic conditions in states like Gujarat and Rajasthan (for Isabgol) and Tamil Nadu (for Senna).

• India is largest exporter of Isabgol and Senna leaves. Not only does India lead in production, but it also controls the lion’s share of global exports for both these commodities, making them important foreign exchange earners in the medicinal plant sector.

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• National Aromatic and Medicinal Plant Board is situated at New Delhi. This board, commonly abbreviated as NMPB, functions under the Ministry of AYUSH and is responsible for promoting the cultivation, conservation, and sustainable use of medicinal and aromatic plants across India.

• Central Institute for Medicinal and Aromatic Plants (CIMAP) is located at Lucknow, U.P. It is not a ICAR research institute. It comes under CSIR. This is a frequently tested fact — CIMAP operates under the Council of Scientific and Industrial Research (CSIR), not under ICAR. It conducts research on the genetic improvement, agronomy, and processing of medicinal and aromatic plants.

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• We have 90% collection of medicinal plants is from wild source. This is a critical concern because over-harvesting from wild populations leads to habitat degradation and species endangerment. It highlights the urgent need for systematic cultivation and domestication of medicinal plants to ensure sustainable supply and biodiversity conservation.

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• Hippocrates is known as father of modern medicine. The ancient Greek physician Hippocrates (c. 460–370 BC) is honored with this title for establishing medicine as a rational discipline separate from philosophy and superstition. He emphasized observation, diagnosis, and ethical medical practice.

• Theophrastus is known as father of pharmacognosy. Theophrastus (c. 371–287 BC), a student of Aristotle, made pioneering contributions to the study of plants and their medicinal uses. Pharmacognosy is the branch of science that deals with the study of drugs derived from natural sources — plants, animals, and minerals.

Quick Revision: Father Figures in Medicine

Title	Person
Father of Modern Medicine	Hippocrates
Father of Pharmacognosy	Theophrastus

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Medicinal & Aromatic Plants — Classification

Medicinal Plants are those which are rich in secondary metabolites and are potential source for drugs. Aromatic Plants are those which contain essential oils in them. Essential oils are mainly a complex mixture of acyclic & monoterpenoids.

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Detailed Medicinal Plants — Propagation, Chemical Content & Plant Part Used

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Additional Important Medicinal Plants

Summary Cheat Sheet