Objective: To assess the impact of reference pricing and extension of generic substitution on the daily cost of antipsychotic drugs in Finland during the first year after its launch. Furthermore, the additional impact of reference pricing on prior implemented generic substitution is assessed....

I evaluate how the probability of substitution of a prescribed drug in a pharmacy depends on the pharmacists' profits and patients' out of pocket costs. I use Finnish population-wide data covering all prescriptions of three popular antidepressants. I find that one euro increase in the total...