Drug Information & Interactions Flashcards
Primary Sources
Original content providing in-depth information about a topic, often requiring strong literature evaluation skills.
Examples: Clinical research studies, scientific experiments, journal articles.
Secondary Sources
Synthesize findings from multiple primary resources and are usually searchable databases.
Examples: Embase, PubMed, meta-analyses, systematic review articles.
Tertiary Sources
Summarized information from primary and secondary sources, typically presented in a more digestible format.
Examples: Textbooks, compendia, package inserts, websites (CDC, ClinicalTrials.gov).
Prescribing Information (PI)
Reflects the FDA’s findings regarding the safety and effectiveness of prescription drugs under labeled conditions of use.
Format: Follows a structured format to provide consistent, relevant drug information to healthcare providers.
Recommendation for Reliable Health Information
Encourage patients to seek high-quality health information from reputable sources.
Examples: Healthcare organizations (Mayo Clinic, Cleveland Clinic), professional societies, consumer-specific sections of tertiary resources.
Drug-Drug Interactions
Occur when one drug modifies the actions of another drug in the body.
Elderly patients:
The incidence of drug interactions is higher in elderly patients and those taking multiple medications.
Pharmacokinetic Interactions
Interactions that occur when one drug alters the absorption, distribution, metabolism, or excretion (ADME) processes of another drug.
ADME
drug absorption, distribution, metabolism, and excretion.
Absorption
Drug absorption from the gastrointestinal tract may be influenced by various factors.
Distribution
Drug distribution can be altered by factors such as competition for binding sites on plasma proteins.
Metabolism and Excretion
Metabolism reactions in the body affect the elimination of drugs.
Metabolism Interactions
Metabolism interactions occur when one drug influences the metabolic processes of another drug.
Cytochrome P450 Enzymes
Cytochrome P450 enzymes play a crucial role in drug metabolism, and their activity can be influenced by other drugs.
Enzyme Inducers
Agents that increase the activity of hepatic drug-metabolizing enzymes, leading to increased drug metabolism.