Due to the accuracy limitations of low-cost digital scales, it is often necessary to thoroughly mix and dilute well-crushed, powdered drugs with a pharmaceutical-grade solid filler. This increases the overall base weight of the drug and allows for more accurate measurements and cuts. These can be purchased online or at some medical supply stores. One of the most common fillers used in the professional compounding industry is hydrous or anhydrous pharma-grade lactose. Other options include cellulose, calcium phosphate, magnesium oxide and magnesium carbonate.
