(See Monthly Shot Cuts Opioid Use)
The FDA said it relied on data from other studies, which found that 36% of
patients stayed on
treatment for six months, compared with 23% of placebo patients.
The agency said serious side effects include injection site reaction that requires surgical intervention and liver damage.
Other side effects could include depression, suicide, and suicidal thoughts and behaviors, although the treatment will not include any boxed warnings.