Δ9‐Tetrahydrocannabinol preparation showed no clear difference in participants abstinent at end of treatment compared with placebo (moderate certainty).
It is very uncertain whether anticonvulsants and mood stabilisers changes participants abstinent at end of treatment compared with placebo (very low certainty).
Buspirone showed no clear difference in participants abstinent at end of treatment compared with placebo (low certainty).
N‐acetylcysteine showed no clear difference in participants abstinent at end of treatment compared with placebo (low certainty).
Selective serotonin reuptake inhibitor antidepressant showed no clear difference in participants abstinent at end of treatment compared with placebo (low certainty).
Mixed action antidepressant showed no clear difference in participants abstinent at end of treatment compared with placebo (low certainty).