The present technology is directed to one or more compositions comprising serdexmethylphenidate conjugates and unconjugated d-methylphenidate and/or a pharmaceutically acceptable salt thereof. The present technology also relates to one or more compositions and oral formulations comprising serdexmethylphenidate conjugates and unconjugated d-methylphenidate and/or a pharmaceutically acceptable salt thereof. The present technology also relates to one or more methods of using compositions comprising serdexmethylphenidate conjugates and unconjugated d-methylphenidate and/or a pharmaceutically acceptable salt thereof. The present technology additionally relates to one or more pharmaceutical kits containing a composition comprising serdexmethylphenidate conjugates and unconjugated d-methylphenidate and/or a pharmaceutically acceptable salt thereof.