What are the rules in calculating drug dosages?

Definition/Introduction Clark’s rule equation is defined as the weight of the patient in pounds divided by the average standard weight of 150 pounds (68 kg) multiplied by the adult dose of a drug equals the pediatric medication dose, as is demonstrated below: (Weight* divided by 150 lbs.)

What is drug calculation?

Drug calculations require the use of conversion factors, such as when converting from pounds to kilograms or liters to milliliters. Simplistic in design, this method allows us to work with various units of measurement, converting factors to find our answer.

What is the strength of a drug?

The strength is the amount of drug in the dosage form or a unit of the dosage form (e.g. 500 mg capsule, 250 mg/5 mL suspension). The route of administration is the way the dosage form is given.

What important methods should be put in place to ensure the right formula is used for pediatric patients?

The prescriber must consider weight, height, body surface area, age, and condition of the child when ordering dosages. As mentioned previously, the two methods used for calculating safe pediatric dosages are body weight (e.g., mg/kg) and body surface area (BSA, measured in square meters [m2]).

What is drug calculation definition?

How do tablets calculate drugs?

1. tablet = 2.5 mg.
2. tablets = 2.5 + 2.5 mg = 2 + 2 + 0.5 + 0.5 mg = 4 + 1 = 5 mg.
3. tablets = 2.5 + 2.5 + 2.5 mg = 2 + 2 + 2 + 0.5 + 0.5 + 0.5 mg = 6 + 1 + 0.5 mg = 7.5 mg.

How is medication measured?

Liquid medications are usually measured in teaspoons, tablespoons, or milliliters. Read abbreviations used in dosage directions carefully. Abbreviations for teaspoons and tablespoons are similar. This comparison shows how to convert a measurement from teaspoon/tablespoon to milliliters.

How is drug potency calculated?

Relative Potency=DoseStandard sample / DoseTest sample when the 2 doses produce the same effect. Note that the relative potency is NOT dose specific. It is not quoted as the potency for a certain effect, but just as a ratio when the two samples produce the same effect (of any magnitude).