PepsiCo said Monday it would buy prebiotic soda brand Poppi for $1.95 billion, expanding in the “healthier soda” category at a time when the company is battling falling demand for its traditional beverages and snacks. Shares of PepsiCo were up 1.5% in morning trading.

Ellsworth developed Poppi – then known as Mother Beverage -- in her kitchen in 2015 because she loved soda but was tired of the way it made her feel. She mixed fruit juices with