Existence of a detailed price list for products.

Flexibility in payment methods.

Safety of imported products.

Quality of storage, transportation, and packaging of products by the supplier.

Supplier's ability to provide products within a short timeframe.

Comparison of prices among different suppliers.

Availability of a consistent delivery schedule.

Mechanism for returning expired products.

Direct communication with suppliers.

Online stores and electronic applications.

The Saudi Food and Drug Authority provides a list of suppliers for pharmaceutical products.