Question

The physician writes an order for 250 mg of a medication for a patient weighing 168 pounds The label on the vial states 100 mg per ml. One teaspoon is approximately equal to five milliliters.

Answer 1

The number of teaspoons that should be administered is about 0.4 teaspoons.
250 milligrams / 100 milligrams = 2.5 milliliters
5 milliliters / 2.5 milliliters = 2 milliliters
2 milliliters = 0.405768 teaspoons