Pharmacy Technician Certification Board Practice Exam Practice Question
A prescription reads: Famotidine 40 mg/5 mL 50 mL Sig: 0.4 mL PO t.i.d. What amount of medication, in mg, is given each day?
Correct Answer: D
Rationale: To determine the daily dosage of Famotidine, first find the amount given per dose. The prescription states 0.4 mL is taken three times a day (t.i.d.). Since the concentration is 40 mg per 5 mL, we calculate the amount in 0.4 mL:
(0.4 mL) x (40 mg / 5 mL) = 3.2 mg per dose.
Multiplying by the frequency (3 doses daily):
3.2 mg x 3 = 9.6 mg per day.
Option A (1.2 mg) is incorrect as it underestimates the total daily dosage. Option B (3.2 mg) represents only one dose, not the daily total. Option C (6.4 mg) mistakenly assumes two doses instead of three. Thus, 9.6 mg accurately reflects the total daily administration.
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