Bee colonies that ate the supplement during trials had up to 15 times more baby bees that grew to adulthood.
Honeybees are a vital part of food production and contribute to pollinating 70% of leading global crops.
"This technological breakthrough provides all the nutrients bees need to survive, meaning we can continue to feed them even when there's not enough pollen," senior author Professor Geraldine Wright at the University of Oxford told BBC News.
"It really is a huge accomplishment," she says.