What foods have xanthines?
Score: 4.5/5 (34 votes) Occurrence. The xanthine alkaloids include caffeine, theobrominetheobromineTheobromine, also known as xantheose, is a bitter alkaloid of the cacao plant, with the chemical formula C7H8N4O2. It is found in chocolate, as well as in a number of other foods, including the leaves ...