1.6
Classi e categorie di farmaci
I farmaci possono essere classificati in base alla loro composizione chimica o alla loro applicazione terapeutica prevista. Ad esempio, gli agenti ant…
I farmaci possono essere classificati per tipo chimico o uso terapeutico.
Ad esempio, gli antinfettivi in grado di uccidere gli agenti patogeni o di inibirne la crescita e la riproduzione possono essere classificati in base al tipo di organismi che prendono di mira o alla loro struttura chimica.
I farmaci possono essere ulteriormente classificati come farmaci da prescrizione, farmaci senza prescrizione medica o sostanze controllate.
I farmaci da prescrizione, compresi gli antibiotici, richiedono la supervisione di un operatore sanitario autorizzato per mitigare i potenziali rischi e garantire un uso sicuro.
La FDA ritiene che i farmaci senza prescrizione medica o OTC siano sicuri se usati come indicato, eliminando la necessità di una prescrizione. I farmaci da banco sono comunemente usati per alleviare i sintomi del raffreddore, fornire sollievo dal dolore o affrontare problemi digestivi.
Le sostanze controllate, a causa del loro potenziale di abuso e dei rischi di dipendenza, sono rigorosamente monitorate dalla DEA e classificate in diversi elenchi.
Le droghe della Tabella I hanno il più alto potenziale di abuso, non hanno un uso medico accettato e hanno la regolamentazione più severa.
I farmaci della Tabella II, nonostante il loro alto potenziale di abuso, sono autorizzati per uso medico in base a normative rigorose.
View the full transcript and gain access to JoVE Core videos
Q1: What are the main ways drugs can be classified in pharmacology?
Drugs are classified by chemical type or therapeutic use. Anti-infectives, for example, can be categorized based on the organisms they target or their chemical structure. This classification system helps healthcare providers and researchers organize medications by their properties and intended effects, making it easier to understand drug relationships and applications.
Q2: How do prescription drugs differ from over-the-counter medications?
Prescription drugs, including antibiotics, require supervision by a licensed healthcare provider to ensure safe usage and mitigate risks. The FDA deems nonprescription or OTC drugs safe when used as directed, eliminating the need for a prescription. Understanding prescription nonprescription and orphan drugs helps clarify regulatory distinctions and appropriate usage contexts.
Q3: What are controlled substances and why are they regulated differently?
Controlled substances are strictly monitored by the DEA due to their abuse potential and dependency risks. They are categorized into five schedules based on abuse potential, medical use, and safety. Schedule I drugs have the highest abuse potential and lack accepted medical use, while Schedule II drugs have high abuse potential but authorized medical use under stringent regulations.
Q4: What distinguishes Schedule III, IV, and V controlled substances?
Schedule III drugs have lower abuse potential than Schedule II and include certain opioid combinations with accepted medical use. Schedule IV substances like benzodiazepines have even lower abuse potential with fewer restrictions. Schedule V drugs, such as certain cough medicines with codeine, have the lowest abuse potential and minimal restrictions on medical use.
Q5: How do anti-infective drugs work against pathogens?
Anti-infective agents are capable of killing pathogens or inhibiting their growth and reproduction. They can be organized based on the specific organisms they target, such as bacteria, viruses, or fungi, or by their chemical structure. This classification helps clinicians select the appropriate anti-infective for specific infections.
Q6: Why is drug classification important for healthcare and research?
Drug classification helps regulate the distribution, use, and research of substances to reduce potential harm and abuse. By organizing drugs by chemical composition or therapeutic application, healthcare providers can better understand drug properties, predict effects, and make informed prescribing decisions. This system also supports regulatory oversight and public safety.
Q7: What role does the FDA play in classifying nonprescription drugs?
The FDA deems nonprescription or OTC drugs safe when used as directed according to label instructions. This classification eliminates the need for a prescription and allows consumers to self-treat common conditions. The FDA's approval process ensures these medications meet safety and efficacy standards for over-the-counter use.