A physician orders Zofran (ondansetron HCl) 8 mg PO t.i.d. The pharmacy dispenses a bottle labeled 4 mg per teaspoon. Given that 1 teaspoon equals 5 mL, how many mL should be administered for each single dose?

A continuous intravenous infusion of nitroglycerin is prescribed at 15 mcg/min. The available solution contains 50 mg of nitroglycerin in 500 mL of D5W. At what rate should the infusion pump be set in mL/hr?

A physician orders 250 mg of a drug. The available vial is labeled 500 mg/10 mL. How many milliliters should the nurse administer?