This glossary covers the core vocabulary you need to recognize for the Medications domain of the PTCE, which makes up about 35% of the scored exam. Focus on understanding what each term means in practice, not just memorizing a definition.
- ACE Inhibitor
- A class of antihypertensive drugs (generic names typically end in "-pril", such as lisinopril) that block the angiotensin-converting enzyme, reducing blood pressure. Common side effect is a dry, persistent cough.
- Adverse Drug Reaction (ADR)
- An unwanted or harmful response to a medication that occurs at normal doses used for prevention, diagnosis, or treatment.
- Analgesic
- A medication used to relieve pain. Includes non-opioid options like acetaminophen and NSAIDs, and opioid options like oxycodone and morphine.
- Anaphylaxis
- A severe, potentially life-threatening allergic reaction that can occur rapidly after exposure to a drug or other allergen, often requiring immediate epinephrine administration.
- Anticoagulant
- A medication that slows or prevents blood clot formation, such as warfarin, apixaban, or heparin. Requires careful monitoring due to bleeding risk.
- Antihistamine
- A drug that blocks histamine receptors to relieve allergy symptoms such as itching, sneezing, and runny nose. Examples include diphenhydramine and loratadine.
- Bioavailability
- The proportion of a drug that enters systemic circulation and is able to have an active effect, often affected by route of administration and formulation.
- Beta-Blocker
- A class of drugs (generic names often end in "-olol", such as metoprolol) that block beta-adrenergic receptors, used to treat hypertension, arrhythmias, and heart failure.
- Black Box Warning
- The strictest warning required by the FDA on a drug's labeling, highlighting a serious or life-threatening risk associated with the medication.
- Brand Name
- The proprietary, trademarked name a manufacturer gives to a drug product, as opposed to its generic (chemical) name. For example, Lipitor is the brand name for atorvastatin.
- Bronchodilator
- A medication that relaxes and widens the airways in the lungs, used to treat asthma and COPD. Examples include albuterol and ipratropium.
- Contraindication
- A specific condition, disease, or situation in which a drug, procedure, or surgery should not be used because it may be harmful to the patient.
- Controlled-Release (CR)
- A dosage form designed to release the drug gradually over an extended period, allowing for less frequent dosing. Related terms include extended-release (ER/XR) and sustained-release (SR).
- Corticosteroid
- A class of anti-inflammatory drugs that mimic hormones produced by the adrenal glands, used to treat inflammation, allergies, and autoimmune conditions. Examples include prednisone and fluticasone.
- Diuretic
- A medication that increases urine production to help the body eliminate excess fluid and salt, commonly used to treat hypertension and heart failure.
- Dosage Form
- The physical form in which a drug is produced and dispensed, such as tablet, capsule, suspension, injection, or transdermal patch.
- Drug Interaction
- A change in how a drug acts in the body when taken with another drug, food, or supplement, which may increase or decrease the drug's effect or cause an adverse reaction.
- Duration of Action
- The length of time a drug produces its therapeutic effect after administration.
- Efficacy
- The ability of a drug to produce the desired therapeutic effect under ideal conditions.
- Enteric-Coated
- A tablet or capsule coating designed to prevent the medication from dissolving in the stomach, allowing it to release in the small intestine instead, often to protect the stomach or the drug itself.
- Generic Name
- The non-proprietary name of a drug, usually based on its chemical structure, that is used regardless of manufacturer. For example, atorvastatin is the generic name for Lipitor.
- Half-Life
- The time it takes for the concentration of a drug in the body to reduce by half, which helps determine dosing frequency.
- Hypoglycemic Agent
- A medication used to lower blood glucose levels in patients with diabetes, including insulin and oral agents such as metformin and sulfonylureas.
- Indication
- The approved or accepted medical condition or use for which a drug is prescribed.
- Loading Dose
- An initial, often larger, dose of a medication given to quickly reach a therapeutic drug concentration in the body before switching to a lower maintenance dose.
- Maintenance Dose
- The ongoing dose of a medication given to keep the drug at a steady, therapeutic level in the body.
- Mechanism of Action (MOA)
- The specific biochemical process by which a drug produces its effect in the body.
- Narrow Therapeutic Index (NTI)
- A characteristic of drugs, such as warfarin, digoxin, and levothyroxine, where the difference between an effective dose and a toxic dose is small, requiring careful monitoring.
- NSAID (Nonsteroidal Anti-Inflammatory Drug)
- A class of medications used to reduce pain, fever, and inflammation by inhibiting prostaglandin production. Examples include ibuprofen and naproxen.
- Off-Label Use
- The use of an FDA-approved drug for a purpose, dosage, or population that is not included in its official approved labeling.
- Onset of Action
- The amount of time it takes for a drug to begin producing a noticeable therapeutic effect after administration.
- Opioid
- A class of drugs that act on opioid receptors to relieve moderate to severe pain, including morphine, oxycodone, hydrocodone, and fentanyl. Carries risk of dependence and respiratory depression.
- Orphan Drug
- A drug developed to treat a rare disease or condition, often given special incentives by the FDA to encourage development.
- Over-the-Counter (OTC)
- A medication that can be purchased without a prescription.
- Pharmacodynamics
- The study of what a drug does to the body, including its mechanism of action and effects at the site of action.
- Pharmacokinetics
- The study of what the body does to a drug, commonly summarized by the acronym ADME: absorption, distribution, metabolism, and excretion.
- Prodrug
- An inactive or less active compound that is metabolized in the body into its active pharmacological form.
- Proton Pump Inhibitor (PPI)
- A class of drugs (generic names often end in "-prazole", such as omeprazole) that reduce stomach acid production, used to treat GERD and ulcers.
- Side Effect
- A secondary, usually undesired, effect of a drug that occurs in addition to its intended therapeutic effect.
- Statin
- A class of drugs (generic names often end in "-statin", such as atorvastatin and simvastatin) used to lower cholesterol by inhibiting an enzyme involved in cholesterol production.
- Steady State
- The point at which the amount of drug being administered equals the amount being eliminated from the body, resulting in a stable drug concentration.
- Sublingual
- A route of administration in which a medication is placed under the tongue to dissolve and be absorbed directly into the bloodstream, bypassing first-pass metabolism.
- Suspension
- A liquid dosage form in which solid drug particles are dispersed but not dissolved in a liquid, requiring shaking before use to ensure even dosing.
- Synergistic Effect
- An interaction in which the combined effect of two drugs is greater than the sum of their individual effects.
- Therapeutic Duplication
- The situation where a patient is prescribed two or more drugs from the same therapeutic class or with the same mechanism of action, increasing the risk of additive side effects.
- Therapeutic Equivalence
- A designation indicating that a generic drug product is expected to have the same clinical effect and safety profile as the brand-name reference product.
- Therapeutic Index
- A comparison of the amount of a drug that causes a therapeutic effect to the amount that causes toxicity; a low index means a narrower margin of safety.
- Tolerance
- A condition in which a patient requires increasing doses of a drug over time to achieve the same effect, commonly seen with long-term opioid or benzodiazepine use.
- Trough Level
- The lowest concentration of a drug in the bloodstream, typically measured just before the next scheduled dose, used to monitor drugs with a narrow therapeutic index.
- Vaccine
- A biological preparation that provides active acquired immunity to a particular infectious disease by stimulating the immune system.
- Vasodilator
- A medication that widens blood vessels to improve blood flow and lower blood pressure.