In pharmaceutical products, water can come from multiple sources. It can be added intentionally during the manufacturing process as a solvent or as an ingredient in the finished product. It also can be a component of the raw materials used. Furthermore, water can enter a product unintentionally from the environment during or after the manufacturing process due to insufficient packaging or storage conditions.
Regardless, a precise and specific examination of water content is needed for proper administration, handling, and storage of pharmaceutical drugs.