LOS ANGELES — Koia is expanding its portfolio of plant-based nutrition beverages and launching a line of cereal-inspired protein shakes.

The ready-to-drink products are formulated from Koia’s proprietary base of brown rice, pea and chickpea proteins, in addition to nine essential amino acids and other natural ingredients. Each shake contains 18 grams of protein and zero gluten, dairy or soy.

“Continuing to explore inventive avenues in our portfolio expansion, we draw inspiration from brands beyond our own industry, such as our friends at luxury streetwear brand Kith, which has brilliantly infused cereal into its brick-and-mortar Treats destinations, striking a chord with the contemporary nostalgia we all share for relishing our cherished cereals during childhood,” said Chris Hunter, chief executive officer of Koia.

The protein beverages are launching in three initial flavors, fruity cereal, cocoa cereal and cinnamon cereal, exclusively at Whole Foods Market stores with a suggested retail price of $4.49 per bottle.

“Initiating the exclusive launch of our new cereal line with Whole Foods marks a full-circle moment for us, as it’s where Koia got its start nearly a decade ago, and has since been the bedrock of our brand, bolstered by a strong and evolving retail partnership,” Mr. Hunter said.