Preformulation studies provide a path for formulation development and drug product development in respect of drug form, adjuvants, composition, physical structure, and chemistry of drug molecules, facilitating pharmacokinetic and biopharmaceutical properties evaluation, adjustments, and their implementation. Preformulation studies focus on the concepts of physicochemical properties which are vital for any new drug molecule and/or proteins/peptides. These properties not only affect their therapeutic efficacy but also the development process of their specific dosage form.