Topamax for binge eating/neuroleptic associated weight gain
tadalafil for SSRI-related sexual dysfunction (male and female)
desipramine for ADHD for people for whom stimulants are not a great idea (e.g. AA folks very leery of substances)
Dopamine agonists (especially pramipexole) for depression that is particularly anhedonic and anergic
I know a lot of people seem to like pregabalin for anxiety, not something I routinely do and have not been impressed
Very rarely, compounded intranasal ketamine for depression. Not a great success rate to date.
naltrexone for compulsive gambling
naltrexone for dissociation (driven by specific request of the patients in question, online community seems to have converged on this as a notion, not less effective than any other alternatives)
low doses of depakote in biological males with problematic aggression and irritability but in situations where getting reliable collateral/symptom reporting is impossible to the extent you'd need to actually pin down a clear affective diagnosis
The big one coming down the pike (haven't done it myself yet) is GLP-1 agonists for substance use d/o of various kinds, especially alcohol and cocaine.