Tapentadol

Tapentadol (trade names: Nucynta, Palexia, In India available as TAPAL by MSN Labs) is a centrally acting analgesic with a dual mode of action as an agonist of the μ-opioid receptor and as a norepinephrine reuptake inhibitor. It is also an agonist of the σ₂ receptor, though the function of this orphan receptor remains controversial.