What is the formula to calculate the dose of medication needed based on the patient’s weight?

The correct answer is based on understanding how to calculate the dose of medication according to a patient’s weight. The formula "Dose (mg) = Weight (kg) x Dosage (mg/kg)" effectively demonstrates the relationship between a patient's weight and the prescribed dosage per kilogram.

In this formula, the weight of the patient is multiplied by the recommended dosage in milligrams per kilogram. This method ensures that the total dose administered is appropriate for the individual, taking into account their body weight, which is crucial for dosing safety and efficacy. By using this formula, healthcare providers can individualize medication dosing, which is particularly important for medications that require precise dosing based on weight to avoid underdosing or overdosing.

The other choices do not provide the correct method to calculate the dose based on weight. While they involve the concepts of weight and dosage, they do not accurately represent how to derive the total dose needed for a patient.