(i) Drug- A chemical agent intended for use in the diagnosis, mitigation, treatment, cure or prevention of disease in man or in other animals.
(ii) Dosage forms- Dosage form is a transformation of a pure chemical compound into a predetermined form by admixing drug components with non drug components.
(iii) Excipients: The excipients are used to give a particular shape to the formulation & to increase stability & also to increase its palatability as well as to give more elegance to the preparation
OR
These are the ingredients which along with Active Pharmaceutical Ingredients make up the dosage forms. Eg. suspending agent ,emulsifying agent etc.