Pharmacokinetics refers to how the body affects a drug, including absorption, distribution, metabolism, and elimination, whereas pharmacodynamics describes how a drug affects the body. Absorption permits a drug's entry into plasma from its site of administration. Then, a drug may distribute through the bloodstream to specific tissues before being metabolized by the liver or other tissues and eventually eliminated from the body through urine, bile, or feces.

1. CHAPTER#01
Pharmacokinetics
Dr.kainat Azhar
MBBS(FROM KMC)

2. What is pharmacology??
• The term "pharmacology" is derived from the
Greek words "pharmakon," meaning drug or
medicine, and "logos," meaning study or
knowledge.
• Pharmacology is the study of drugs, including their
interactions with living organisms, mechanisms of
action, therapeutic uses, and potential side effects.

3. Pharmacokinetics vs
pharmacodynamics
• Pharmacokinetics refers to what the body does to a
drug,
• whereas pharmacodynamic describes what the
drug does to the body

5. • Absorption: First, absorption from the site of
administration permits entry of the drug (either
directly or indirectly) into plasma.
• Distribution: Second, the drug may reversibly leave
the bloodstream and distribute though out the body
of specific tissue
• Metabolism: Third, the drug may be metabolism by
the liver or other tissues.
• Elimination: Finally, the drug and its metabolites are
eliminated from the body in urine, bile, or feces.