Which seed contains theobromine, flavonoids, and caffeine and acts as a stimulant and vasodilator?

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Seeds of Theobroma cacao carry theobromine, caffeine, and flavonoids, which together produce stimulant and vasodilator effects. Theobromine is a milder stimulant and also helps relax smooth muscle, contributing to vasodilation, while caffeine provides additional stimulant action. The flavonoids in cocoa, such as catechin and epicatechin and their polymers, boost endothelial nitric oxide production, improving blood flow and vessel health. This combination is unique to cacao seeds among the options, whereas the other plants are not known for containing this trio of compounds in their seeds.