The investigators are proposing a randomized pilot feasibility study to evaluate the effects
of galantamine versus placebo on preventing relapse to opioid use following tapering from
methadone or buprenorphine maintenance (Medication Assisted Treatment, or MAT) among adults
with opioid use disorder, with additional behavioral therapy (web-based cognitive behavioral
therapy) provided across all conditions to help individuals successfully transition from MAT
to a drug-free state.