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Theophylline, also known as 1,3-dimethylxanthine, is a drug that inhibits phosphodiesterase and blocks adenosine receptors. [1] ... Adverse effects
The common side effects of Tedral include gastrointestinal disturbances, dizziness, headache and lightheadedness. [3] [4] [5] However, at high dose, it may lead to cardiac arrhythmias, hypertension, seizures or other serious cardiovascular and/or central nervous system adverse effects.
The effects of theophylline/ephedrine as a performance-enhancing drug in exercise and sports have been studied. [ 20 ] [ 21 ] Use of theophylline/ephedrine combinations has led to disqualification of elite athletes due to ephedrine being banned in competitive sports.
In 1965, the effects of caffeine on mammalian atrial muscle was documented by De Gubareffand Sleator. Then 5 years later, the effects of adenosine and adenine nucleotides on the cAMP in the guinea pig brain was described by Sattin and Rall. [1] In 1980, methylxanthines caffeine and theophylline were observed in mice by Fredholm and others.
The naturally occurring compounds caffeine and theophylline are structurally classified as methylated xanthines. Side effects typically seen with the use of xanthines include jitters, over-energetic behavior, and insomnia. Less common side effects can include diuresis, gastrointestinal irritation, and rarely ringing in the ears.
The beneficial effects of small alkyl groups on the heterocycle could be to twist the central ring away from exact coplanarity with the heterocyclic ring. There is a similar twist in cAMP and there is general agreement that high affinity PDE3 inhibitors should adopt an energetically favoured planar conformation that mimics the anti conformation ...
However, deprescribing may be considered if a patient experiences side effects like rapid heart rate, anxiety, or bone loss, or if their thyroid function tests normalize.” ...
Zileuton is a minor substrate of CYP1A2, 2C8/9, 3A4, and a weak inhibitor of CYP 1A2. The drug has been shown to increase the serum concentration or effects of theophylline, propranolol, and warfarin, although significant increase in prothrombin time is not obvious. It is advised that the doses of each medication be monitored and/or reduced ...
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related to: adverse effects of theophyllineThe lowest prices on specific drugs - Family Circle