If a physician prescribes Phenytoin 0.1 g by mouth twice daily and the capsules are 100 mg each, how many capsules should be prepared for one dose?

To determine the correct dosage in capsules for Phenytoin, we start by interpreting the prescription details. The physician has prescribed 0.1 g of Phenytoin to be taken by mouth twice daily.

First, we need to convert 0.1 g to milligrams because the capsules are measured in mg. Since 1 g is equivalent to 1000 mg, 0.1 g is equal to 100 mg.

The capsules are 100 mg each. Therefore, for a single dose of 100 mg, the patient would need to take 1 capsule.

Since the prescription indicates a 100 mg dose, the correct answer indicates that 1 capsule should be prepared for each dose, aligning perfectly with the prescribed amount. When the physician recommends a course of treatment at that specific dose, it confirms the calculation of needing only one capsule per dose is indeed correct.