Definition A concentration (C) indicates the content of one substance in another as a quotient. By definition, it refers to the amount of a substance present in a given volume. However, concentrations can also refer to masses. In pharmacy, concentration is often used in connection with liquid and semisolid dosage forms. For solid dosage forms … Concentration
Background Numerous drugs exist that must be shaken well immediately before administration. These include, for example, certain eye drops, nasal sprays, injectables, and antibiotic suspensions for children (see below). The reason is usually that the active ingredient in the drug is in suspension. Suspensions are heterogeneous mixtures of substances consisting of a liquid in which … Shake Before Use
