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Pharmacokinetics vs. Pharmacodynamics
- Pharmacokinetics studies drug movement into, through, and out of the body.
- It explains how the body affects a drug, while pharmacodynamics explores how drugs affect the body.
Drug Administration Routes and Absorption
- Drug administration routes affect absorption speed.
- Intravenous is fastest, followed by inhalation, then oral, as each route's proximity to systemic circulation varies.
Factors Influencing Drug Absorption
- Drug absorption depends on factors like transport type, pH, surface area, and blood flow.
- The intestines' large surface area makes them a primary absorption site despite pH changes.