 Some uterotonics act as analogues of oxytocin (OXT).An oxytocinergic or oxytocic chemical pathway is one responding to oxytocin or its analogues, and an oxytocinergic or oxytocic agent is any of these agents, oxytocin or its analogues, with similar physiologic effect, chemical interaction, or (usually) both.The oxytocin receptor (OXTR) is the binding and activation site of oxytocin.