ABSTRACT
A pharmacist prepares and dispenses oral liquid dosage forms routinely. The oral liquid dosage forms are mainly syrups, elixirs, and suspensions. Among these three, syrups and elixirs are homogenous (uniform concentration throughout the liquid), and suspensions are heterogeneous, where the concentration is not uniform throughout the liquid. When medicated, all these preparations contain a specific amount of drug in a given amount of liquid. The solution strength, stated on the label, may indicate the amount (in μg, mg, or g) of drug per one milliliter or multiple milliliters of solution, such as 10 mg per mL, 1.2 g per 20 mL, etc. The strength may also be expressed as g or mg per teaspoonful (or 5 mL). The strength of certain biological products may be expressed as units of activity per milliliter or milliequivalents per liter.
