Dose or dosage explained with examples, usage rules, mistakes, and professional advice for correct medical writing and everyday communication. 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] It is distinct from dose, which denotes a single, specific quantity of a drug or substance given at one time. [2] Dosage typically includes information on the number of doses, intervals between administrations, and the. Dose, Dosage, Dosage Form, Dosage Regimen are often confusing terms. Dose is the predetermined amount of the drug administered at one time. DOSAGE meaning: 1. the amount of medicine that you should take at one time: 2. the amount of medicine that you…. Learn more. The meaning of DOSAGE is the addition of an ingredient or the application of an agent in a measured dose. A dose is a specific quantity of a medication or drug taken at one time, such as a pill or a milliliter of liquid. Dosage, however, describes the regimen of doses, including the amount per dose and the frequency of doses. For oral dosage forms (capsules, suspension, syrup, tablets): For infections: Adults—100 milligrams (mg) every 12 hours on the first day, then 100 mg once a day or 50 to 100 mg every 12 hours. Learn the crucial differences between a drug dose and a dosage to ensure safe and effective medication use. Avoid common medication mistakes. Find dosage information for over 5,000 prescription and over-the-counter medications, based on FDA-approved labeling and established drug reference sources.