Concept:
Good Pharmacy Practice focuses on patient care and proper medicine use.
Step 1: GPP promotes safe dispensing and counselling.
Step 2: It ensures medicines are used correctly and rationally.
Step 3: The main goal is patient safety, not profit.
Step 4: Therefore, GPP ensures safe and rational use of medicines.
\[
\boxed{\text{Safe and rational use of medicines}}
\]