Pharmaceutical syrups are produced by mixing purified water, sweeteners, active ingredients (API), aromas, flavours and other ingredients (thickeners, etc.). The ingredients are added by means of metering or dosing systems like flow meters and load cells to one or more reactors, the order and quantity of the ingredients to add is specified in the recipe.
Usually, preparations are heated before finishing the addition of components. Solid products are added by means of solid-liquid blenders or vacuum systems. When the process is finished, the end product is filtered (if required) and sent to a storage tank. The product is transferred from the storage tanks to the filling machines by pumps.