16 Questions
Which classification system arranges crude drugs according to the plant parts they come from?
Morphological Classification
What is a limitation of the Morphological Classification system?
Repetition of drugs or plants may appear
Which classification system recognizes the evolutionary development of crude drugs?
Taxonomical Classification
What is a merit of the Chemical Classification system?
Phytochemical studies are well performed through this system
What is a limitation of the Taxonomical Classification system?
It fails to recognize organized and unorganized forms of crude drugs
Which classification system does not consider the chemical nature and therapeutic significance of crude drugs?
Taxonomical Classification
What is a characteristic of drugs classified under the Morphological Classification system?
They contain cellular plant tissue
Which classification system is limited by the fact that a drug can contain many compounds belonging to different groups?
Chemical Classification
What is the technical and legal definition of a drug in India?
A substance intended to be used for diagnosis, treatment, mitigation, or prevention of diseases in humans or animals
Why is classification of drugs necessary?
Because drugs are not similar in many aspects
What is the basis of the alphabetical classification system of drugs?
The alphabetical order of the drug names
What is the demerit of the alphabetical classification system of drugs?
It lacks relationship with the previous drug entries
What is the basis of the morphological classification system of drugs?
The plant parts from which the drugs are obtained
What is an example of an organised drug?
A drug obtained directly from a plant part, such as a rhizome
What is the merit of the morphological classification system of drugs?
It helps in identification and detection of adulteration
What is a demerit of the morphological classification system of drugs?
The chemical constituents have no correlation with the therapeutic action
Study Notes
Definition of Drugs
- Drugs are chemical constituents obtained from natural herbal sources or synthetic sources.
- In India, drugs are defined under the Drugs and Cosmetics Act as substances intended for internal or external use in humans or animals for diagnosis, treatment, mitigation, or prevention of diseases.
Importance of Classification
- Classification is necessary for drugs because they are not similar in many aspects.
- If not classified, drug identification and drug safety become challenging.
Classification Systems
Alphabetical Classification
- Arranges crude drugs in alphabetical order.
- Demerits: lacks relationship with previous drug entries.
Morphological Classification
- Arranges crude drugs based on plant parts (e.g., leaf, bark, flower, fruit, seed, etc.).
- Divided into two categories:
- Organised drugs: obtained directly from plant parts and contain cellular tissue.
- Unorganised drugs: prepared from plants through intermediate physical processes and do not contain cellular plant tissue.
- Merits: identification and detection of adulteration are easier, and practical study is more effective.
- Demerits: chemical constituents have no correlation with therapeutic action, and repetition of drugs or plants may appear.
Taxonomical/Biological Classification
- Classifies crude drugs based on their kingdom, subkingdom, division, class, order, family, genus, and species.
- Merits: evolutionary development is understood.
- Demerits: fails to recognize organized and unorganized forms of crude drugs, and chemical nature and therapeutic significance are not included.
Chemical Classification
- Classifies crude drugs based on their chemical constituents.
- Merits: phytochemical studies are well performed.
- Demerits: confusion occurs when a drug contains many compounds belonging to different groups.
This quiz covers the technical and legal definition of drugs in India, their sources, and the importance of classification. It also discusses the different purposes of drugs, including diagnosis, treatment, and prevention of diseases in humans and animals.
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