D345
PSYCHIATRIC MEDICATIONS
& DRUG CLASSES TEST
100 Questions with Answers & Explanations
100 A-D 6
QUESTIONS MCQ FORMAT DRUG DOMAINS
Drug classes • mechanisms • adverse effects • interactions • monitoring
,D345 PSYCHIATRIC MEDICATIONS & DRUG CLASSES PASSPOINTPRO
Test Overview
This focused 100-question D345 test drills recognition and application of psychiatric medication classes. It
emphasizes mechanisms, hallmark adverse effects, major interactions, monitoring priorities, and clinical clues
that distinguish commonly tested medications.
Format 100 multiple-choice questions with four options (A-D).
Feedback The correct answer and a focused explanation appear immediately after every
question.
Focus Antidepressants, antipsychotics, mood stabilizers, anxiety and sleep medications,
ADHD medications, and substance-use pharmacotherapy.
Coverage: 30 Antidepressant • 30 Antipsychotic • 15 Mood Stabilizer • 10 Anxiety/Sleep • 8 ADHD • 7 Substance-Use
Pharmacotherapy questions
1. A patient with major depressive disorder also wants help stopping cigarette use. Which
antidepressant is especially relevant because it is also used for smoking cessation?
A. Amitriptyline
B. Bupropion
C. Fluvoxamine
D. Mirtazapine
Answer: B - Bupropion
Explanation: Bupropion inhibits norepinephrine and dopamine reuptake and is also used for smoking cessation. It
is generally less likely than SSRIs to cause sexual dysfunction, but it can lower the seizure threshold and is
avoided in certain eating disorders.
2. Which antidepressant is most strongly associated with increased appetite, weight
gain, and sedation through prominent antihistamine effects?
A. Bupropion
B. Venlafaxine
C. Mirtazapine
D. Fluoxetine
Answer: C - Mirtazapine
Explanation: Mirtazapine enhances noradrenergic and serotonergic signaling while strongly blocking histamine
H1 receptors. Sedation and increased appetite can be useful in selected patients with insomnia or low weight, but
weight gain may limit acceptability.
3. A patient taking an SSRI develops sexual dysfunction and asks about an
antidepressant with a lower likelihood of this adverse effect. Which option is often
considered?
A. Sertraline
B. Paroxetine
C. Fluvoxamine
D. Bupropion
Answer: D - Bupropion
100-Question Test • Answers & explanations included Page 2
, D345 PSYCHIATRIC MEDICATIONS & DRUG CLASSES PASSPOINTPRO
Explanation: Bupropion is commonly associated with less sexual dysfunction than serotonergic antidepressants.
Choice still depends on the patient's diagnosis, seizure risk, anxiety profile, and other clinical factors.
4. Which SSRI has a particularly long half-life and an active metabolite, making
withdrawal symptoms less likely after an abrupt missed dose than with shorter-half-life
agents?
A. Paroxetine
B. Fluvoxamine
C. Venlafaxine
D. Fluoxetine
Answer: D - Fluoxetine
Explanation: Fluoxetine and its active metabolite norfluoxetine have long half-lives. This can reduce the
likelihood of abrupt discontinuation symptoms, although it also means drug effects and interactions can persist
after stopping.
5. A patient taking paroxetine stops it suddenly and develops dizziness, irritability, and
flu-like symptoms. What is the most likely explanation?
A. Serotonin depletion from MAOI use
B. Neuroleptic malignant syndrome
C. Antidepressant discontinuation syndrome
D. Lithium toxicity
Answer: C - Antidepressant discontinuation syndrome
Explanation: Shorter-half-life serotonergic antidepressants such as paroxetine can produce discontinuation
symptoms when stopped abruptly. Gradual tapering is usually preferred when clinically appropriate.
6. Which SSRI is commonly limited by dose-dependent QT prolongation concerns at
higher doses?
A. Citalopram
B. Bupropion
C. Fluoxetine
D. Sertraline
Answer: A - Citalopram
Explanation: Citalopram has a recognized dose-related QT-prolongation concern. Patient-specific cardiac risk,
interacting medications, electrolyte status, and recommended dose limits should be considered.
7. Which SSRI is widely used for obsessive-compulsive disorder and is also a clinically
important inhibitor of several CYP enzymes?
A. Mirtazapine
B. Escitalopram
C. Fluvoxamine
D. Duloxetine
Answer: C - Fluvoxamine
Explanation: Fluvoxamine is an SSRI with evidence for OCD and has clinically relevant CYP inhibition. Medication
reconciliation is important because it can raise concentrations of susceptible coadministered drugs.
100-Question Test • Answers & explanations included Page 3