Yes, theophylline and caffeine (and the closely related theobromine) are drugs. Relatively mild ones, but they do act as stimulants.
Tea contains caffeine, theobromine, and theophylline ... three related xanthine derivatives with some drug-like qualities.
Herbert Weinfeld has written: 'A study of metabolism of caffeine and theophylline' -- subject(s): Caffeine, Theophylline, Metabolism
Main drug found in tea is xantine named theophylline, there is mo such thing as "teina"SP.
The chief methylxanthine drug is theophylline
Do not take ipriflavone with theophylline, azfirlukast, antipsychotics, caffeine, celecoxib, cyclobenzaprine, nifedipine, anti-inflammatories, pain relivers, tacrine, tamoxifen, warfarin.
Theophylline relaxes smooth muscles which has been beneficial to those with asthma and is the reason why after drinking caffeine the person often feels the need to use the bathroom as it is affecting the smooth muscle of the colon. -- http://www.energyfiend.com/2010/01/caffeine-metablolism
A xanthin, also spelled xanthine, is one of a group of alkaloids which include caffeine, theophylline, and theobromine, a precursor of uric acid.
Asthma patients using theophylline may increase the amount of theophylline absorbed, perhaps leading to toxicity. Consult with a medical practitioner.
caffeine - coffee, cola nuts. nicotine - tobacco leaves. theobromine - cocoa bean. theophylline - tea
caffeine - coffee, cola nuts. nicotine - tobacco leaves. theobromine - cocoa bean. theophylline - tea
Herbal tea may still contain caffeine, which is a drug
No, it might be the most common illegal drug, but caffeine is the most common drug. Yes, caffeine is a drug.