A dose is the amount of a substance administered at one time, while dosage refers to the frequency and size of doses over a period. Find dosage information for over 5,000 prescription and over-the-counter medications, based on FDA-approved labeling and established drug reference sources. Dosage Calculation Cheat Sheet & Interactive Calculator Welcome to your ultimate resource for mastering medication math. This interactive dosage calculation cheat sheet and calculator empowers nurses, nursing students, and healthcare professionals to accurately and safely calculate medication dosages. Eliminate guesswork, prevent errors, and build confidence in your clinical practice. Understanding the difference between drug dose and dosage is crucial for safe medication use. A dose is the specific amount of medicine taken at one time, while dosage refers to the frequency and duration of taking the medication. DOSAGE definition: the administration of medicine in doses. See examples of dosage used in a sentence. The meaning of DOSAGE is the addition of an ingredient or the application of an agent in a measured dose. 1. the quantity of medicine etc to be taken at one time. DOSAGE definition: 1. the amount of medicine that you should take at one time: 2. the amount of medicine that you…. Learn more. In pharmacology and medicine, dosage refers to the prescribed regimen for administering a medication or substance, encompassing the amount, frequency, and duration of use. [1] Detailed Sildenafil dosage information for adults, the elderly and children. Includes dosages for Erectile Dysfunction and Pulmonary Hypertension; plus renal, liver and dialysis adjustments.