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).
CAVEAT EMPTOR: âdecaffeinatedâ does not mean 100% caffeine free. In fact a decaf coffee only needs to be 97% caffeine free according to the USDA. That means that an average 12 oz. cup of decaffeinated coffee, which originally might have been packed with 180 mg of caffeine, now only would contain 5.4 mg of caffeine.