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.
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%.
Manufacturers are ramping up production to make up the difference, but admit it may take weeks for them to catch up.