Brain penetrant, mixed 5-HT2A/5-HT2C receptor agonist (Ki values are 0.7, 2.4 and 20 nM for 5-HT2A, 5-HT2C and 5-HT2B receptors respectively). Reduces rapid eye movement (REM) and slow wave sleep and increases waking in the rat. Hallucinogenic agent. Acts via 5-HT2A receptors to inhibit the inflammatory effects of tumor necrosis factor (TNF)-α.