PHARMACOLOGY-LESSON 153

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PHARMACOLOGY: Let us come to know about the introduction of Drugs in this chapter
Introduction:- 1. Drugs are the substances which are used for the prevention or treatment of diseases in a comfortable condition for our human body.
2. Drugs are classified into two types. They are biological and chemical substances.
(I) Biological Drugs:- 1. These drugs are obtained from plants, such as the roots, leaves and fruit.
Examples of these drugs are digitalis (from the foxglove plant) and antibiotics such as pencillin and streptomycin (from lower plants called molds).

2. These drugs are also obtained from animals
Examples of these drugs are hormones are secretions from the glands of animals.

(II) Chemical Drugs:- 1. These drugs are syntesized in the laboratory.
Examples of these drugs are Anticancer drugs, such as methotrexate and prednisone,

2. These drugs are also contained in food substances called vitamins.
Examples of these drugs are vitamin B12.

"Drugs are directed by a physician and are directed by a pharmacist." These drugs are sold in pharmacy.

In the same way Pharmocology deals with the study of drugs-their nature, origin and effect on the body.

Pharmacology contains many subdivisions. They are:

1. Medicinal chemistry,
2. Pharmacodynamics,
3. Pharmacokinetics,
4. Molecular pharmacology,
5. Chemotherapy and
6. Toxicology

In the next lesson, we will see about subdivisions of pharmacology. Okay.

To go to the next lesson from here please click the link below.


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