PTCB Drug Test #2 3 Flashcards
6 cards from real Pharmacy practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 PTCB Drug Test #2 3 flashcards as text
A physician orders vancomycin 1 g IV every 12 hours. Available: vancomycin 500 mg/vial. How many vials are needed per day?
Answer: 4 vials
1 g = 1000 mg. Each dose requires 1000 mg ÷ 500 mg = 2 vials. With 2 doses per day: 2 x 2 = 4 vials per day.
Which of the following SSRIs has the longest half-life, making it less likely to cause discontinuation syndrome?
Answer: Fluoxetine
Fluoxetine has the longest half-life (~1–6 days for parent drug, ~4–16 days for active metabolite norfluoxetine), making discontinuation syndrome much less common than with other SSRIs.
Which of the following is the brand name for lisdexamfetamine?
Answer: Vyvanse
Vyvanse is the brand name for lisdexamfetamine dimesylate, a prodrug Schedule II stimulant used for ADHD and binge eating disorder.
What is the mechanism of action of ACE inhibitors?
Answer: Prevent conversion of angiotensin I to angiotensin II
ACE inhibitors block the angiotensin-converting enzyme, preventing the conversion of angiotensin I to angiotensin II, which lowers blood pressure and reduces aldosterone secretion.
Which of the following is classified as a Schedule IV controlled substance?
Answer: Alprazolam
Alprazolam (Xanax) is a Schedule IV benzodiazepine. Buprenorphine is Schedule III, morphine is Schedule II, and methylphenidate is Schedule II.
Rosuvastatin is marketed under which brand name?
Answer: Crestor
Crestor is the brand name for rosuvastatin, a high-intensity statin that provides significant LDL reduction with a relatively low dose.