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100+ Free Japan Pharmacist Exam Practice Questions

Pass your Japan National Pharmacist Examination (Yakuzaishi Kokka Shiken) exam on the first try — instant access, no signup required.

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68.49% overall; 86.25% new six-year graduates Pass Rate
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Which transformation is a typical Phase I metabolic reaction for many aromatic drugs?

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Key Facts: Japan Pharmacist Exam Exam

345

current total questions through the 111th exam

MHLW pharmacist exam overview/status PDF

90/105/150

essential/theory/practice split

MHLW pharmacist exam overview/status PDF

JPY 6,800

111th examination fee

MHLW 111th administration notice

68.49%

111th overall pass rate

MHLW 111th results announcement

115th

first exam under new 335-question basic policy

MHLW new basic policy page

Prepare from official MHLW sources: current exams use 345 questions over two days, the 111th fee was JPY 6,800, and the 111th pass rate was 68.49% overall. Practice should integrate science, therapeutics, law, ethics, and practical pharmacy cases rather than memorizing past items.

Sample Japan Pharmacist Exam Practice Questions

Try these sample questions to test your Japan Pharmacist Exam exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1In UV-visible spectrophotometry, which change would directly double absorbance if the sample obeys the Beer-Lambert law?
A.Double the path length while keeping concentration constant
B.Halve the molar absorptivity
C.Use a wavelength where the analyte does not absorb
D.Dilute the sample two-fold
Explanation: Beer-Lambert law states A = epsilon times b times c, so absorbance is directly proportional to path length and concentration. Doubling path length doubles absorbance when the same wavelength and concentration are used.
2A weakly acidic drug is retained too strongly on a reversed-phase HPLC column. Which adjustment is most likely to shorten its retention time by increasing ionization?
A.Lower the mobile-phase pH far below the drug pKa
B.Raise the mobile-phase pH above the drug pKa
C.Decrease the organic solvent fraction
D.Use a longer C18 column with the same mobile phase
Explanation: For a weak acid, pH above pKa increases the ionized A- form, which is more polar and less retained on a reversed-phase column. Shorter retention can improve run time if peak shape and method validity remain acceptable.
3A weak base has pKa 8.0. At physiologic pH 7.0, which statement best describes its ionization?
A.It is mostly unionized because pH is below pKa
B.It is mostly ionized because pH is below pKa
C.It is exactly 50% ionized and 50% unionized
D.It is completely degraded by acid hydrolysis
Explanation: For a weak base, pH below pKa favors the protonated, ionized form. One pH unit below pKa gives an ionized-to-unionized ratio of about 10:1.
4In proton NMR, a signal that integrates to three protons and appears as a singlet most likely represents which structural feature?
A.A methyl group with no neighboring nonequivalent hydrogens
B.A methylene group split by two neighboring hydrogens
C.An aromatic ring with five hydrogens
D.A carboxylic acid proton coupled to a methyl group
Explanation: Integration of three protons is consistent with a methyl group. A singlet means those protons have no neighboring nonequivalent protons that produce splitting under the observed conditions.
5A buffer is prepared from acetic acid and sodium acetate at equal molar concentrations. What is the most defensible pH estimate?
A.pH equals 7.4 because all buffers are physiologic
B.pH equals the pKa of acetic acid
C.pH equals twice the pKa because both acid and base are present
D.pH cannot be estimated without knowing total buffer volume
Explanation: The Henderson-Hasselbalch equation gives pH = pKa + log([base]/[acid]). When conjugate base and acid concentrations are equal, the log term is zero, so pH equals pKa.
6In mass spectrometry, what does the molecular ion peak most directly help determine?
A.The approximate molecular mass of the analyte
B.The pH of the sample solution
C.The optical rotation of a chiral compound
D.The solubility of the analyte in water
Explanation: The molecular ion corresponds to the intact ionized molecule, so its mass-to-charge ratio can indicate molecular mass when charge is known. Fragment peaks then support structural interpretation.
7A weakly acidic contaminant must be removed from an organic layer into an aqueous layer. Which approach best promotes transfer to water?
A.Acidify the aqueous layer well below the contaminant pKa
B.Make the aqueous layer basic enough to form the anion
C.Add nonpolar solvent to reduce aqueous polarity
D.Cool the mixture until both layers freeze
Explanation: Deprotonating a weak acid forms a charged anion that partitions preferentially into the aqueous layer. This acid-base extraction principle is common in analytical and medicinal chemistry workflows.
8Why can two enantiomers of the same drug have different pharmacologic effects?
A.Biologic targets are chiral and may bind one enantiomer more favorably
B.Enantiomers always have different molecular formulas
C.Only one enantiomer can dissolve in water
D.Enantiomers cannot cross cell membranes
Explanation: Proteins, enzymes, and receptors are chiral environments, so binding interactions can differ between enantiomers. This can change potency, selectivity, metabolism, or toxicity.
9The antibacterial activity of penicillins depends on which structural feature reacting with bacterial transpeptidases?
A.A strained beta-lactam ring
B.A catechol ring
C.A quaternary ammonium group
D.A steroid nucleus
Explanation: The strained beta-lactam ring acylates penicillin-binding proteins, inhibiting cell wall cross-linking. Loss or opening of that ring generally abolishes beta-lactam antibacterial activity.
10An ester prodrug is designed to improve oral absorption. What is the intended in vivo conversion?
A.Oxidation to an aldehyde by alcohol dehydrogenase
B.Hydrolysis by esterases to release the active drug
C.Decarboxylation to carbon dioxide only
D.Binding irreversibly to albumin without release
Explanation: Ester prodrugs commonly rely on chemical or enzymatic hydrolysis by esterases to regenerate the active parent drug. The promoiety can improve lipophilicity, taste, or membrane permeation before conversion.

About the Japan Pharmacist Exam Exam

The Japan National Pharmacist Examination is the national licensure examination for pharmacists in Japan. MHLW administers it under the Pharmacists Act and publishes the exam notice, subject standards, past questions, answers, passing criteria, and results. The current structure through the 111th exam uses 345 questions across essential, pharmacy theory, and pharmacy practice sections; MHLW has separately announced a new 335-question, five-subject structure for the 115th exam and later.

Assessment

Seven current subjects: physical/chemical/biological sciences; hygiene; pharmacology; pharmaceutics; pathophysiology and pharmacotherapy; law/systems/ethics; and practice. The 115th exam and later will move to five subjects under the new MHLW basic policy.

Time Limit

Two days, six timed sessions totaling about 12 hours 10 minutes in the current MHLW structure

Passing Score

111th exam: 426 points or higher out of 686, essential questions at least 70% overall and at least 30% in each essential subject, contraindicated answers 2 or fewer

Exam Fee

JPY 6,800 for the 111th administration; verify the next official notice (Ministry of Health, Labour and Welfare (MHLW), Japan)

Japan Pharmacist Exam Exam Content Outline

60 questions

Physical, Chemical, and Biological Sciences

Physical and analytical chemistry, organic and medicinal chemistry, biological structure and function, microbiology, immunology, and molecular biology.

40 questions

Hygiene and Public Health

Epidemiology, prevention, nutrition, environmental health, food hygiene, toxicology, risk assessment, and public-health law interfaces.

40 questions

Pharmacology

Drug mechanisms, receptor pharmacology, adverse effects, interactions, antimicrobial mechanisms, pharmacogenomics, and pharmacodynamics.

40 questions

Pharmaceutics and Pharmacokinetics

Absorption, distribution, metabolism, excretion, clearance, bioavailability, dosage-form design, stability, sterility, and therapeutic drug monitoring.

40 questions

Pathophysiology and Pharmacotherapy

Disease mechanisms, laboratory data, therapeutic selection, monitoring, patient-specific risks, and evidence-based treatment planning.

30 questions

Law, Systems, and Ethics

Pharmacists Act mission and licensure, PMD Act concepts, professional duties, confidentiality, patient autonomy, and regulatory decision-making.

95 questions

Pharmacy Practice

Prescription review, dispensing calculations, patient counseling, medication reconciliation, OTC triage, Japan pharmacy practice, adverse-event reporting, safety systems, and clinical cases.

How to Pass the Japan Pharmacist Exam Exam

What You Need to Know

  • Passing score: 111th exam: 426 points or higher out of 686, essential questions at least 70% overall and at least 30% in each essential subject, contraindicated answers 2 or fewer
  • Assessment: Seven current subjects: physical/chemical/biological sciences; hygiene; pharmacology; pharmaceutics; pathophysiology and pharmacotherapy; law/systems/ethics; and practice. The 115th exam and later will move to five subjects under the new MHLW basic policy.
  • Time limit: Two days, six timed sessions totaling about 12 hours 10 minutes in the current MHLW structure
  • Exam fee: JPY 6,800 for the 111th administration; verify the next official notice

Keys to Passing

  • Complete 500+ practice questions
  • Score 80%+ consistently before scheduling
  • Focus on highest-weighted sections
  • Use our AI tutor for tough concepts

Japan Pharmacist Exam Study Tips from Top Performers

1Use the MHLW subject standards as the master checklist, then convert each subject into mixed clinical and calculation drills.
2Do not memorize official past questions verbatim; identify the tested concept and write a fresh explanation in your own words.
3Practice essential-style fundamentals first, then move into theory and practical case integration.
4Track errors by subject and by cause: knowledge gap, calculation setup, counseling judgment, law detail, or misread stem.
5For Japan-specific practice, connect laws and systems to the pharmacist action: what must be checked, documented, explained, reported, or escalated.

Frequently Asked Questions

Does this practice bank copy MHLW past questions?

No. It uses official MHLW standards, structure, and past-question topics for alignment, but the practice questions are original four-option items written for study.

How many questions are on the Japan National Pharmacist Examination?

The current structure through the 111th exam has 345 questions: 90 essential, 105 pharmacy theory, and 150 pharmacy practice questions. MHLW announced that the 115th exam and later will move to 335 questions.

What was the 111th exam passing standard?

MHLW published three requirements: 426 points or higher out of 686, essential-question performance at least 70% overall and at least 30% in each essential subject, and 2 or fewer contraindicated answers.

What was the latest published pass rate?

For the 111th exam, MHLW reported 8,749 passing candidates out of 12,774 examinees, a 68.49% overall pass rate. New six-year graduates had an 86.25% pass rate.

Where should candidates verify dates and fees?

Use the official MHLW pharmacist national examination page and the latest administration notice. The 111th notice listed a JPY 6,800 fee, but future notices should be checked directly.