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).
1 Most tea has 15-70 mg caffeine / cup. 2  Coffee tends to have 80-135 mg caffeine / cup. 3  It is a myth that green or white teas are always lower in caffeine than black.  Any color of tea (black, green, white, etc.) can be high or low in caffeine.