Questions and Answers
What is the USP Drug classification?
How many classes of drugs are recognized in USP Drug classification?
51
What is the classification based on the structure of drug compounds called?
What types of actions can drugs have on biological receptors?
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What does the mode of action classification refer to?
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In which classification are drugs assessed for their risk to a fetus during pregnancy?
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What is the definition of Preg category A?
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What defines Preg category C drugs?
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What are drugs classified as in Preg category X?
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What does Preg category N represent?
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Study Notes
USP Drug Classification
- Established by the United States Pharmacopeia (USP) in 1820.
- Drugs are categorized based on therapeutic action, mechanism of action, and formulary.
- There are a total of 51 classes of drugs recognized.
Classification According to Chemical Class
- Classifies drugs based on the structure of their compounds.
- Examples include:
- Fibrates
- Steroids
- Triptans
- Cardiac glycosides
- B-lactam antibiotics
Classification According to Mechanism of Action
- Groups drugs based on their action on biological receptors.
- Types of actions include:
- Antagonists
- Agonists
- Inverse agonists
- Modulators
Mode of Action
- Drugs are classified according to physiological or anatomical changes they induce.
- Examples include:
- Antidiuretic drugs
- Chromotropes
- Antithrombotics
- Antifungals
- Laxatives
- Decongestants
- ECT (Electroconvulsive Therapy)
Therapeutic Class
- Classification based on the pathology that drugs are intended to treat.
Legal Classification
- Drugs categorized under pregnancy categories or controlled substances.
Pregnancy Category
- Evaluates the risk a drug poses to a fetus during fetomaternal circulation.
- Does not consider drugs that transfer through breast milk.
Pregnancy Category A
- No risks demonstrated in controlled human trials.
- Trials show no risks to fetuses during any trimester of pregnancy.
Pregnancy Category B
- No fetal risks shown in animal trials with sufficient well-controlled human trials.
- Includes drugs with adverse fetal risks in animals that are not observed in humans.
Pregnancy Category C
- Risk has not been ruled out; adverse effects shown in animal studies.
- Insufficient data from well-controlled trials in pregnant women.
- Drugs used only if benefits outweigh potential risks to the fetus.
Pregnancy Category D
- Demonstrated risk to human fetuses based on well-controlled trials or research.
- Risks outweigh benefits, indicating caution in use.
Pregnancy Category X
- Contraindicated in pregnancy due to established fetal risks.
- Evidence from well-controlled studies shows adverse reactions and fetal abnormalities.
Pregnancy Category N
- Drugs not yet classified by the FDA into any pregnancy category.
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Description
Explore the classification of drugs as per the United States Pharmacopeia (USP). This quiz covers various drug classes according to therapeutic action and chemical structure, highlighting the 51 different classifications. Enhance your understanding of pharmacology with these educational flashcards.
