P H A RM A C OL OGY · EXA M 1
NSG 124
Pharmacology
Exam 1
100 Actual Questions & Correct Answers
with Detailed Rationales
2 0 2 6 E D I T I ON
Herzing University
Nursing Program · NSG 124
GU ARAN T EE PAS S · S T U D Y RES OU RC E
,NSG 124 Exam 1 — Herzing Pharmacology (2026) 100 Questions · Answers · Rationales
NSG 124 — Pharmacology Exam 1
Herzing University · 2026 Edition · 100 Questions with Answers & Detailed Rationales
This exam-style study resource contains 100 NCLEX-style multiple-choice questions covering pharmacokinetics —
absorption, distribution, metabolism, excretion, half-life, bioavailability, steady state, first-pass effect, protein
binding, and CYP450-mediated drug interactions — along with foundational pharmacology concepts essential for
NSG 124 Exam 1. Each question is immediately followed by the correct answer and a detailed rationale explaining
why the correct option is right and why the distractors are wrong. Use this resource for active recall: cover the
answer, attempt the question, then verify your reasoning against the rationale. Questions are presented as a single
continuous exam — no topic sections — mirroring the actual Exam 1 format. Rationales emphasize clinical nursing
implications and patient safety.
Q1. A nurse is preparing to administer acetaminophen 650 mg by mouth. The
medication is supplied as 325 mg tablets. Which pharmacokinetic phase is most
directly influenced by choosing the oral route of administration?
A. Distribution
B. Absorption
C. Metabolism
D. Excretion
ANSWER: B. Absorption
RATIONALE:
Absorption is the movement of a drug from its site of administration into the systemic
circulation, and the chosen route of administration (oral, IV, IM, sublingual) is the
single largest determinant of how — and how much — drug is absorbed. Oral
acetaminophen must disintegrate, dissolve, and cross GI membranes before
reaching the blood, so the oral route directly governs the absorption phase.
Distribution describes movement from blood to tissues, metabolism is hepatic
biotransformation, and excretion is removal — all are downstream of absorption.
Q2. Which drug name is assigned by the manufacturer and protected by trademark,
appearing on product labels with the registered symbol?
A. Chemical name
B. Generic name
C. Trade name
D. Official name
ANSWER: C. Trade name
NSG 124 · Herzing University · Guarantee Pass Edition Page 1
,NSG 124 Exam 1 — Herzing Pharmacology (2026) 100 Questions · Answers · Rationales
RATIONALE:
The trade (brand) name is proprietary, trademarked by the manufacturer, and
typically capitalized on the label (e.g., Tylenol, Motrin). The chemical name
describes the molecular structure, the generic name is the nonproprietary United
States Adopted Name (USAN) assigned by the FDA, and the official name is the
name listed in the United States Pharmacopeia (USP). For pharmacokinetics, the
generic name is what nurses use clinically to avoid confusion between brand
products with the same active ingredient.
Q3. A patient is prescribed a drug with a low therapeutic index. The nurse
understands this means the drug:
NSG 124 · Herzing University · Guarantee Pass Edition Page 2
, NSG 124 Exam 1 — Herzing Pharmacology (2026) 100 Questions · Answers · Rationales
A. Has a wide safety margin between therapeutic and toxic doses
B. Requires careful serum-level monitoring because toxic levels are close to
therapeutic levels
C. Cannot be metabolized by the liver and is excreted unchanged
D. Will produce an immediate therapeutic response after one dose
ANSWER: B. Requires careful serum-level monitoring because toxic levels are
close to therapeutic levels
RATIONALE:
Therapeutic index (TI) is the ratio of the lethal dose for 50% of the population to
the effective dose for 50% of the population (LD50/ED50). A low TI — also called a
narrow therapeutic index — means the toxic dose is very close to the therapeutic
dose, so small variations in absorption, metabolism, or excretion can push the patient
into toxicity. Drugs such as warfarin, digoxin, lithium, and vancomycin require
serum drug-level monitoring and individualized dosing. A wide TI is the opposite
situation (safe margin), and TI is unrelated to hepatic metabolism or speed of onset.
Q4. Which route of administration bypasses first-pass hepatic metabolism,
allowing a lower total dose to achieve the same systemic effect?
A. Oral
B. Sublingual
C. Intramuscular (deep)
D. Subcutaneous
ANSWER: B. Sublingual
RATIONALE:
Sublingual (and buccal) administration allows the drug to dissolve under the tongue
and be absorbed through the highly vascular oral mucosa directly into the systemic
circulation via the superior vena cava, completely bypassing the portal circulation
and therefore the first-pass metabolic effect of the liver. Oral drugs absorbed from
the GI tract travel through the portal vein to the liver first, where a large fraction
may be inactivated before reaching systemic blood. Intramuscular and
subcutaneous routes also avoid first-pass metabolism, but the question emphasizes
a lower dose — sublingual nitroglycerin is the classic example, dosed in micrograms
rather than milligrams.
Q5. The nurse is preparing to administer a medication that has a half-life of 8
NSG 124 · Herzing University · Guarantee Pass Edition Page 3
NSG 124
Pharmacology
Exam 1
100 Actual Questions & Correct Answers
with Detailed Rationales
2 0 2 6 E D I T I ON
Herzing University
Nursing Program · NSG 124
GU ARAN T EE PAS S · S T U D Y RES OU RC E
,NSG 124 Exam 1 — Herzing Pharmacology (2026) 100 Questions · Answers · Rationales
NSG 124 — Pharmacology Exam 1
Herzing University · 2026 Edition · 100 Questions with Answers & Detailed Rationales
This exam-style study resource contains 100 NCLEX-style multiple-choice questions covering pharmacokinetics —
absorption, distribution, metabolism, excretion, half-life, bioavailability, steady state, first-pass effect, protein
binding, and CYP450-mediated drug interactions — along with foundational pharmacology concepts essential for
NSG 124 Exam 1. Each question is immediately followed by the correct answer and a detailed rationale explaining
why the correct option is right and why the distractors are wrong. Use this resource for active recall: cover the
answer, attempt the question, then verify your reasoning against the rationale. Questions are presented as a single
continuous exam — no topic sections — mirroring the actual Exam 1 format. Rationales emphasize clinical nursing
implications and patient safety.
Q1. A nurse is preparing to administer acetaminophen 650 mg by mouth. The
medication is supplied as 325 mg tablets. Which pharmacokinetic phase is most
directly influenced by choosing the oral route of administration?
A. Distribution
B. Absorption
C. Metabolism
D. Excretion
ANSWER: B. Absorption
RATIONALE:
Absorption is the movement of a drug from its site of administration into the systemic
circulation, and the chosen route of administration (oral, IV, IM, sublingual) is the
single largest determinant of how — and how much — drug is absorbed. Oral
acetaminophen must disintegrate, dissolve, and cross GI membranes before
reaching the blood, so the oral route directly governs the absorption phase.
Distribution describes movement from blood to tissues, metabolism is hepatic
biotransformation, and excretion is removal — all are downstream of absorption.
Q2. Which drug name is assigned by the manufacturer and protected by trademark,
appearing on product labels with the registered symbol?
A. Chemical name
B. Generic name
C. Trade name
D. Official name
ANSWER: C. Trade name
NSG 124 · Herzing University · Guarantee Pass Edition Page 1
,NSG 124 Exam 1 — Herzing Pharmacology (2026) 100 Questions · Answers · Rationales
RATIONALE:
The trade (brand) name is proprietary, trademarked by the manufacturer, and
typically capitalized on the label (e.g., Tylenol, Motrin). The chemical name
describes the molecular structure, the generic name is the nonproprietary United
States Adopted Name (USAN) assigned by the FDA, and the official name is the
name listed in the United States Pharmacopeia (USP). For pharmacokinetics, the
generic name is what nurses use clinically to avoid confusion between brand
products with the same active ingredient.
Q3. A patient is prescribed a drug with a low therapeutic index. The nurse
understands this means the drug:
NSG 124 · Herzing University · Guarantee Pass Edition Page 2
, NSG 124 Exam 1 — Herzing Pharmacology (2026) 100 Questions · Answers · Rationales
A. Has a wide safety margin between therapeutic and toxic doses
B. Requires careful serum-level monitoring because toxic levels are close to
therapeutic levels
C. Cannot be metabolized by the liver and is excreted unchanged
D. Will produce an immediate therapeutic response after one dose
ANSWER: B. Requires careful serum-level monitoring because toxic levels are
close to therapeutic levels
RATIONALE:
Therapeutic index (TI) is the ratio of the lethal dose for 50% of the population to
the effective dose for 50% of the population (LD50/ED50). A low TI — also called a
narrow therapeutic index — means the toxic dose is very close to the therapeutic
dose, so small variations in absorption, metabolism, or excretion can push the patient
into toxicity. Drugs such as warfarin, digoxin, lithium, and vancomycin require
serum drug-level monitoring and individualized dosing. A wide TI is the opposite
situation (safe margin), and TI is unrelated to hepatic metabolism or speed of onset.
Q4. Which route of administration bypasses first-pass hepatic metabolism,
allowing a lower total dose to achieve the same systemic effect?
A. Oral
B. Sublingual
C. Intramuscular (deep)
D. Subcutaneous
ANSWER: B. Sublingual
RATIONALE:
Sublingual (and buccal) administration allows the drug to dissolve under the tongue
and be absorbed through the highly vascular oral mucosa directly into the systemic
circulation via the superior vena cava, completely bypassing the portal circulation
and therefore the first-pass metabolic effect of the liver. Oral drugs absorbed from
the GI tract travel through the portal vein to the liver first, where a large fraction
may be inactivated before reaching systemic blood. Intramuscular and
subcutaneous routes also avoid first-pass metabolism, but the question emphasizes
a lower dose — sublingual nitroglycerin is the classic example, dosed in micrograms
rather than milligrams.
Q5. The nurse is preparing to administer a medication that has a half-life of 8
NSG 124 · Herzing University · Guarantee Pass Edition Page 3
