Abstract: The present disclosure is directed toward uses of compound 1 (or its stereoisomers) and compositions and/or dosage forms containing compound 1: or a pharmaceutically acceptable salt thereof. Some uses of Compound 1 and/or its stereoisomers include treating a variety of diseases and disorders, including pain, depression, and schizophrenia. In some embodiments, Compound 1 and/or its stereoisomers may be useful in the treatment of a substance use disorder while inducing fewer withdrawal symptoms than a standard-of-care opioid addiction treatment.