Mixed action antidepressant showed no clear difference in completion of scheduled treatment compared with placebo (low certainty).
Anticonvulsants and mood stabilisers may leads to lower completion of scheduled treatment compared with placebo (low certainty).
Buspirone showed no clear difference in completion of scheduled treatment compared with placebo (low certainty).
N‐acetylcysteine showed no clear difference in completion of scheduled treatment compared with placebo (moderate certainty).
Δ9‐Tetrahydrocannabinol preparation showed no clear difference in completion of scheduled treatment compared with placebo (low certainty).
It is very uncertain whether selective serotonin reuptake inhibitor antidepressant changes completion of scheduled treatment compared with placebo (very low certainty).