Disclosed herein are compounds, of the class of amine-bearing heterocycles, which act as positive allosteric modulators and silent allosteric modulators of the mu opioid receptor. These compounds are useful for the treatment of pain, drug addiction, and other CNS derived maladies that are controlled directly or indirectly by activation of the mu opioid receptor. Methods for making and using the allosteric modulators disclosed herein are also provided.