Alternative demand refers to the relationship between the demand for one good and a substitute good, where changes in the price or availability of one directly affect the demand for the other in economics.

• Substitute goods are products that can be used interchangeably by consumers, such as different brands of soft drinks.
• For example, if the price of Pepsi increases, consumers may switch to Coca-Cola, boosting its demand, illustrating how alternative demands operate in competitive markets.