An adenosine receptor antagonist is a drug which acts as an antagonist of one or more of the adenosine receptors. The best known drugs of this class include xanthine and its derivatives (natural: caffeine, theophylline, and theobromine; and synthetic: PSB-1901), but there are also non-xanthine representatives (e.g. ISAM-140, ISAM-R316, etrumadenant, and AZD-4635)
See also Adenosine receptor agonist Adenosine reuptake inhibitor
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