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Xanthine (/ ˈ z æ n θ iː n / or / ˈ z æ n θ aɪ n /, from Ancient Greek ξανθός xanthós ' yellow ' for its yellowish-white appearance; archaically xanthic acid; systematic name 3,7-dihydropurine-2,6-dione) is a purine base found in most human body tissues and fluids, as well as in other organisms. [2]
7-Methylxanthine (7-MX), also known as heteroxanthine, is an active metabolite of caffeine (1,3,7-trimethylxanthine) and theobromine (3,7-dimethylxanthine). [ 1 ] [ 2 ] It is a non-selective antagonist of the adenosine receptors .
[1] [2] Patients observe these symptoms and seek medical advice from healthcare professionals. Because most people are not diagnostically trained or knowledgeable, they typically describe their symptoms in layman's terms, rather than using specific medical terminology. This list is not exhaustive.
Caffeine is a central nervous system (CNS) stimulant of the methylxanthine class and is the most commonly consumed psychoactive substance globally. [9] [10] It is mainly used for its eugeroic (wakefulness promoting), ergogenic (physical performance-enhancing), or nootropic (cognitive-enhancing) properties.
Methylxanthines are chemical compounds which are derivatives of xanthine with one or more methyl groups, including: One methyl group: 1-Methylxanthine;
Symptoms include vomiting, diarrhea, depression, and photosensitivity. Citrus essential oils do not appear to be toxic to humans. [10] [11] Lathyrus sativus: Indian pea, grass pea, chickling pea, white pea Fabaceae: A legume grown in Asia and East Africa as an insurance crop for use during famines.
Theobromine has no significant stimulant effect on the human central nervous system. [4] It is a bronchodilator and causes relaxation of vascular smooth muscle. [4] It is not currently used as a prescription drug. [5] The amount of theobromine found in chocolate is small enough that chocolate can, in general, be safely consumed by humans.
Step 4: Daily symptoms, or waking with asthma once a week or more, and low lung function Medium dose inhaled corticosteroids and formoterol maintenance therapy Short-course oral corticosteroids when required in severely uncontrolled asthma