Methylated xanthines or methylxanthines include stimulants such as caffeine, aminophylline and pentoxifylline. Xanthine is a purine base or nitrogenous compound found in most human body tissues and fluids such as urine and blood. Methylated refers to the introduction of a methyl group into a chemical compound.
Most people don’t care about coffee being a methylxanthine, much less ...
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