These free B.Pharm notes on hepatoprotective drugs milk thistle and kutki cover chapter 23 of Introduction to Pharmacognosy, a first-semester subject. Read the key points below, then study the complete chapter PDF. You can browse every chapter in the Introduction to Pharmacognosy category.
Table of Contents
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Overview of hepatoprotective drugs milk thistle and kutki
This chapter covers hepatoprotective drugs, which protect the liver from damage caused by drugs, alcohol and microbes. It explains their three groups with examples and then studies Milk thistle and Kutki. For each drug it gives synonyms, source, morphology, chemical constituents and uses. These notes are useful for quick revision.
Key points on hepatoprotective drugs milk thistle and kutki
- Hepatoprotective agents are divided into antihepatotoxic agents, hepatoprotective agents and hepatic regenerative agents, such as Turmeric, Milk thistle and Bhringaraj respectively.
- Milk thistle consists of the dried fruits and seeds of Silybum marianum, family Asteraceae, and its chief active constituent is silymarin.
- Silymarin is a mixture of three flavonolignans: silybin (silibinin), silydianin and silychristin, which protect liver cells from toxins and free radicals.
- Kutki consists of the dried rhizomes and roots of Picrorhiza kurroa, family Plantaginaceae, and grows in the Himalayas at 3000 to 5000 metres.
- Kutki contains iridoid glycosides, mainly kutkin, picroside I, picroside II and kutkoside, and its bitter taste is mainly due to the picrosides.
Relevance to pharmacy practice
Liver damage from drugs, alcohol and infections is common in practice. A pharmacist should know which herbal products are used for liver disorders, their active constituents, and how they protect the liver as antioxidants.
Every chapter in this subject builds on the one before it, so do not skip topics that look simple. Definitions, classifications and examples are the parts that examiners return to most often, and a clear understanding here will also make later subjects easier to follow in the coming semesters.
Frequently asked questions on hepatoprotective drugs milk thistle and kutki
What are hepatoprotective drugs?
Hepatoprotective substances protect the liver, help liver cells to regrow and improve detoxification. Their action is mainly antioxidant, and they also stabilise cell membranes and reduce inflammation.
What is the active constituent of Milk thistle?
The chief active constituent is silymarin, a mixture of three flavonolignans: silybin, silydianin and silychristin. It protects the liver from toxins and free radicals and helps hepatocytes regenerate.
What are the uses of Kutki?
Kutki protects the liver and is used in jaundice and other liver disorders. It is also a bitter tonic that improves digestion, and is antipyretic, anti-inflammatory and antioxidant.
Quick revision checklist
Use this self-test after reading the chapter on hepatoprotective drugs milk thistle and kutki. If you can do all of the following without looking at your notes, you are ready for the exam.
- I can explain: the three groups of hepatoprotective agents
- I can explain: the biological source of Milk thistle
- I can explain: the constituents and uses of silymarin
- I can explain: the biological source of Kutki
- I can explain: the constituents and uses of Kutki
Study and exam tips
Start by reading the chapter once for the overall idea, then revise hepatoprotective drugs milk thistle and kutki using headings, definitions, classifications and examples. Short-answer questions in the university exam usually ask for definitions, features, advantages, disadvantages and examples, so write these in your own words and practise drawing the tables and flow charts that the chapter has.
For wider reading, standard textbooks and open resources such as the NCBI Bookshelf help you confirm terms and see more examples. Revise hepatoprotective drugs milk thistle and kutki again a day later and again a week later, because spaced revision improves long-term memory.
This page is part of the Introduction to Pharmacognosy series for first-semester B.Pharm students on B.Pharm Guru, where every chapter has a short summary and a full PDF. Bookmark this page and share it with classmates who are preparing for the same exam.
Related notes: 25. ANTIDIABETIC AGENTS – GYMNEMA AND FENUGREEK, 26. ANTI-INFLAMMATORY AND ANALGESICS – TURMERIC AND BOSWELLIA.
Next: 24. CARDIOVASCULAR DRUGS – GARLIC AND ARJUNA. Back to the Introduction to Pharmacognosy category.
