Disclosed are novel small molecules, methods of synthesis of the small molecules, and uses of the small molecules for modulating activity of the human serotonin receptor 2C (5-HT.sub.2c), preferably selectively. The small molecules have a substituted beta-carboline core structure, which optionally may be saturated at one or more bonds to provide a dihydro-beta-carboline core or a tetrahydro-beta-carboline core. The small molecules may be administered to treat and/or prevent diseases, disorders, and/or conditions associated with human serotonin receptor 2C (5-HT.sub.2C) including psychiatric, mental, and/or neurological diseases, disorders, and conditions such as cognitive impairment, addiction, and obsessive compulsive disorder. The disclosed small molecules also may be administered to treat and/or prevent obesity, for example, via appetite suppression.

Provided are methods of using (1R,5S)-1-(3,4-dichlorophenyl)-3-azabicyclo[3.1.0]hexane, in free or pharmaceutically acceptable salt form.

Provided are methods of using (1R,5S)-1-(3,4-dichlorophenyl)-3-azabicyclo[3.1.0]hexane, in free or pharmaceutically acceptable salt form.

Methods are described to reduce risk of or prevent wooden chest syndrome or other respiratory effects arising from exposure to fentanyl or a fentanyl analog, for instances inpatients receiving medically assisted treatment (MAT) for Opioid Use Disorder (OUD) or who are receiving analgesia and pain management with F/FAs. Pharmaceutical compositions for use in such methods are described.

Methods are described to reduce risk of or prevent wooden chest syndrome or other respiratory effects arising from exposure to fentanyl or a fentanyl analog, for instances inpatients receiving medically assisted treatment (MAT) for Opioid Use Disorder (OUD) or who are receiving analgesia and pain management with F/FAs. Pharmaceutical compositions for use in such methods are described.

The disclosure provides a dosage regimen using sustained-release buprenorphine formulations to produce therapeutic levels of buprenorphine in patients for the treatment of pain or opioid use disorders.

Compounds and compositions for use as starting materials or intermediate materials in the preparation of opioids including, e.g., oxymorphone base and/or an oxymorphone salt; processes for preparing these compounds and compositions; uses of these compounds and compositions in the preparation of APIs and pharmaceutical dosage forms; and uses of said APIs and pharma ceutical dosage forms in the treatment of medical conditions.

A method of treating Alcohol Use Disorder (AUD), Substance Use Disorder (SUD), tobacco use, pain, or proinflammatory disorders comprising: providing a subject with an effective amount of a modified tetracycline or derivative thereof to ameliorate or eliminate the AUD, SUD, tobacco use, pain, or proinflammatory disorder, and wherein the modified tetracycline or derivative thereof has reduced binding to a microbial ribosome and has the formula:

##STR00001##

wherein R1 is acetyl, R2 is OH or acetyl, R3 is acetyl, R4 is H or acetyl, and R5 is acetyl.

A tetrahydroisoquinoline compound as a potassium channel modulator and preparation and application thereof. Specifically, the compound has the structure as shown in formula A.

##STR00001##

This disclosure describes fentanyl haptens, a fentanyl hapten-carrier conjugate, methods of making the fentanyl hapten-carrier conjugate, and methods of using the fentanyl hapten-carrier conjugate including, for example, as a prophylactic vaccine to counteract toxicity from exposure to fentanyl, fentanyl derivatives, and fentanyl analogs. In some embodiments, the fentanyl hapten-carrier conjugate or a composition including the fentanyl hapten-carrier conjugate may be used in an anti-opioid vaccine.