Pharmacy Technician PTCB Practice Test

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A physician writes a prescription for "lactulose syrup 1 tbsp PO b.i.d." What volume, in mL, should the patient take per day?

  1. 5

  2. 10

  3. 30

  4. 60

The correct answer is: 30

Lactulose syrup is commonly prescribed for constipation due to its laxative properties. In this prescription, the physician instructs the patient to take 1 tablespoon (tbsp) by mouth (PO) twice a day (b.i.d). It's important to know that 1 tablespoon is equivalent to approximately 15 mL. Therefore, if the patient is taking 1 tbsp twice a day, the total volume taken per day would be 15 mL x 2 = 30 mL. This makes choice C, 30 mL, the correct answer.

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