IBMX


IBMX, like other methylated xanthine derivatives, is both a:
  1. competitive non-selective phosphodiesterase inhibitor which raises intracellular cAMP, activates PKA, inhibits TNFα and leukotriene synthesis, and reduces inflammation and innate immunity, and
  2. nonselective adenosine receptor antagonist.
As a phosphodiesterase inhibitor, IBMX has IC50 = 2–50 μM and does not inhibit PDE8 or PDE9.