Bust-up gum
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Bust-Up Gum is a Japanese chewing gum supposedly containing an extract of Pueraria mirifica, a plant species found in Thailand and Burma, alleged to have breast-enhancing properties. The plant's underground tubers contain phytoestrogens - natural compounds which mimic the effects of the female sex hormone estrogen.[citation needed]
Zoft Breast Enhancement Gum is a chewing gum from the United States alleged to have breast-enhancing properties.