The 'rule of three' (or dimensional analysis) is a common method for solving dosage calculation problems. It involves setting up an equation where the known quantities are used to find the unknown quantity, ensuring units cancel out correctly.

Medications are dosed by weight (e.g., mg/kg) when their distribution and metabolism are primarily influenced by body mass. Dosing by Body Surface Area (e.g., mg/m²) is often used for potent drugs like chemotherapy, as BSA is considered a better indicator of metabolic rate and organ size.

If you are a healthcare professional and suspect a medication error, it is crucial to immediately report it according to your institution's policies and procedures. Patient safety is the top priority.

No. This calculator is a tool to assist healthcare professionals in their calculations. It should not replace clinical judgment, critical thinking, or adherence to institutional policies and procedures. Always double-check calculations and patient parameters.