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Pharmacology: Drug Administration and Effects

Apr 28, 2025

Lecture Notes

Introduction

  • The lecture format follows a structured approach with various experiments and observations documented.

Experiment Numbering

  • Each experiment is given a unique number for reference.
  • The structure includes teacher's signature and page numbers for authenticity and record-keeping.

Key Sections and Observations

  • Injection Techniques

    • Different methods of injections and their applications.
    • Includes topics like intravenous, intramuscular, and subcutaneous injections.
    • Detailed explanation of the administration routes for medications.
  • Drug Administration

    • Focus on the differences between oral and non-oral routes.
    • The significance of first-pass metabolism and its impact on drug efficacy.
    • Importance of choosing the correct route for medication administration based on the condition being treated.
  • Metabolism and Absorption

    • Description of how drugs are absorbed and metabolized in the body.
    • Emphasis on the role of liver (hepatic portal vein) in drug metabolism.
    • Discussion on factors affecting absorption rates, including the form of medication (e.g., tablet, liquid).

Pharmacokinetics

  • First-Pass Effect

    • Explanation of how the first-pass effect can reduce drug effectiveness.
    • Strategies to bypass the first-pass effect for optimal efficacy.
  • Drug Distribution

    • The distribution process within the body and how it affects drug action.
    • Importance of blood circulation in drug distribution.

Special Considerations

  • Patient-Specific Factors

    • Considerations for patient-specific factors like age, weight, and health conditions in drug administration.
  • Formulation Types

    • Overview of different drug formulations like tablets, capsules, and intravenous solutions.
    • Advantages and disadvantages of each type in terms of absorption and bioavailability.

Conclusion

  • The lecture concludes with an emphasis on the importance of selecting the appropriate administration route for different drugs and the significance of understanding the pharmacokinetics to ensure patient safety and drug efficacy.