A baby formula shortage in many parts of the U.S. is forcing retailers to ration their supplies.
Walgreens is limiting shoppers to three infant and toddler formula products per transaction, according to CNN.
RELATED: FDA warns about recalled baby formula amid investigation of 4 illnesses
A recent review of supplies at 11,000 stores indicates that nearly 30% of popular baby formula brands may be sold out.
Cities, like San Antonio and Minneapolis, are reporting out of stock rates for certain formulas even higher than that -- well above 50%.
RELATED: More Similac baby formula recalled as CDC investigation expands
Part of the problem stems from an Abbott Nutrition recall in mid-February for select lots of Similac and other formulas made in Sturgis, Michigan.
Manufacturers are ramping up production to make up the difference, but admit it may take weeks for them to catch up.
Baby formula shortage 2022: Stores ration sales with nearly 30% of popular brands sold out