Here's what rhymes with theobromine.

Consider these alternatives

theophylline / seen sorbitol / double phenylethylamine / mean caffeine / seen xylitol / people betamethasone / testimony acetonide / side phenylbutazone / shown hydralazine / seen niobate / metaniobate isopropanol / whole dynorphin / person diazepam / can methylphenidate / state alkaloid / avoid tyramine / nine rutin / including