Tramadol hydrochloride

(R,R)-tramadol hydrochloride is a hydrochloride resulting from the reaction of (R,R)-tramadol with 1 molar equivalent of hydrogen chloride, the (R,R)-enantiomer of the racemic opioid analgesic tramadol hydrochloride, it exhibits ten-fold higher analgesic potency than the (S,S)-enantiomer. It has a role as an opioid analgesic, an adrenergic uptake inhibitor, a serotonergic antagonist, a muscarinic antagonist, a nicotinic antagonist, a serotonin uptake inhibitor, an antitussive, a mu-opioid receptor agonist, a kappa-opioid receptor agonist, a NMDA receptor antagonist, a delta-opioid receptor agonist and a capsaicin receptor antagonist. It contains a (R,R)-tramadol(1+). It is an enantiomer of a (S,S)-tramadol hydrochloride.