Sertraline should not be taken with or within two weeks of taking monoamine oxidase inhibitors (MAOIs). These include phenelzine (NardilÂ®), tranylcypromine (ParnateÂ®), isocarboxazid (MarplanÂ®), rasagiline (AzilectÂ®), and selegiline (EmsamÂ®).
Pure caffeine is a white, tasteless substance that makes up as much as 5% of. the weight of tea leaves. By structure, caffeine is closely related to the purine bases, guanine and adenine, found in deoxyribonucleic acids (DNA).
His research found that 16 ounces of caffeinated coffee from Starbucks had 100 milligrams more of caffeine than the same serving size from Dunkin' Donuts. The study also found that Starbucks' caffeinated breakfast blend, purchased at a Florida store, varied greatly in its caffeine content from day to day.