What type of infant formula is Josie Duggar on?

As of my last knowledge update in October 2023, Josie Duggar, the youngest daughter of Jim Bob and Michelle Duggar, is known to be on a specialized formula due to her premature birth. She was previously reported to be on a high-calorie formula to support her growth and development. For the latest information, it's best to consult recent updates or social media from the Duggar family.