Pharmacology is the study of how drugs interact with living systems — how the body processes drugs (pharmacokinetics) and how drugs affect the body (pharmacodynamics). This module treats pharmacology not as a catalog of medications but as a framework for understanding the mechanisms through which chemical agents produce biological effects, and the clinical reasoning required to use them safely.
The module connects to several existing areas of the vault:
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Harm reduction — the most consequential gap in pharmacological thinking is the assumption that drugs are either prescribed correctly or used incorrectly. Harm reduction rejects this binary and asks: given that this person is using this substance in this context, what reduces the immediate dangers? Pharmacological literacy — understanding dose-response relationships, half-lives, drug interactions, and overdose mechanisms — is essential infrastructure for harm reduction practice.
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Pain — pain pharmacology (analgesics, opioids, adjuvant medications) is inseparable from the neurophysiology of pain processing. The opioid crisis is a case study in pharmacological mechanisms (tolerance, opioid-induced hyperalgesia, dependence) interacting with structural conditions (pharmaceutical marketing, regulatory capture, structural abandonment of chronic pain patients).
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Airway Fundamentals — airway management involves pharmacological agents at every stage: sedatives and paralytics for intubation, vasopressors for post-intubation hypotension, bronchodilators for reactive airway disease. Understanding why these drugs work — not just that they work — is what allows clinicians to adapt when standard protocols encounter non-standard patients.
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Psychology — psychopharmacology is a major domain. SSRIs target serotonin reuptake, benzodiazepines modulate GABA receptors, antipsychotics block dopamine pathways. Understanding how these drugs work requires both pharmacological concepts (receptor dynamics, half-life, CYP metabolism) and psychological ones (affect, anxiety, trauma). The interaction runs both ways: pharmacological effects shape psychological states, and psychological states alter pharmacokinetics (stress hormones affect liver metabolism).
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Traditional Chinese Medicine — TCM’s herbal medicine tradition represents a distinct pharmacological framework organized around pattern diagnosis and functional relationships rather than isolated molecular mechanisms. The contrast between TCM’s systems-based prescribing and Western pharmacology’s reductionist approach illuminates assumptions in both.