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This video is all about- Basic Introduction to Pharmacology | Definition, Historical landmarks and scope of pharmacology.

Pharmacology is one of the most important branches in pharmacy, it deals with the study of the drug, drug's effect on the body and body responsible for the drug which has been taken is called pharmacology. Pharmacology has two main branches- (1) Pharmacodynamic and (2) Pharmacokinetic.

The study of drugs or chemicals and the effects they have on living animals is called pharmacology. Pharmacology explains what drugs are, what they do to body functions and what the body does to them. Pharmacology also explains why a person may experience side effects when they take drugs and why there is such a wide spectrum of differences between drug actions in different people.

Once the drug is bound to a protein it exerts a therapeutic effect on the body, this is the pharmacodynamics of a drug. There is an enormous list of different drugs and their actions in the body.

Pharmacokinetics is the study of what happens to drugs once they enter the body. The main stages include:
(1) The absorption of the drug into the blood and across cell membranes to enter the cells;
(2) The distribution of the drug throughout the body
(3) The metabolism or breakdown of the drug; and
(4) The excretion of the drug from the body

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