Compared with placebo, baclofen makes little or no difference to participants who dropped out from treatment, dropped out due to adverse events (side effects), or the number of participants with at least one adverse event. Baclofen probably makes little difference to the number of participants who start drinking again, nor to how much or how often they drink. Baclofen may make little or no difference in the percentage of days people remain alcohol‐free.

Baclofen may increase the amount of use measured by number of drinks per drinking days.

We found that baclofen increased adverse events like depression, vertigo, somnolence, numbness and muscle rigidity but we did not find significant differences between baclofen and placebo for other adverse events.