Introduction A defendant who is deemed incompetent to stand trial may go through competency restoration consisting of mental health treatment and legal education. Antipsychotics are often used in treatment; however, there is little data examining their role. Methods This retrospective study included subjects opined competent to stand trial from July 2016 to February 2020 and prescribed an antipsychotic. The primary outcome was difference in time to competency between antipsychotics. Secondary outcomes included difference in time to competency between groups of antipsychotics, difference in length of stay after opined competent based on medication availability in jail, individual antipsychotics, and formulations. Results There were 117 subjects included for analysis. There were no differences in time to competency between individual antipsychotics, first- and second-generation antipsychotics, or formulations. Length of stay after opined competent was significantly longer for subjects who were prescribed a long-acting injectable antipsychotic (103 days vs 56 days), who were not able to receive their antipsychotic in jail (104 days vs 54 days), or who were prescribed any formulation of paliperidone compared with olanzapine (88 days vs 35 days). Discussion Since there were no differences in time to competency, patient-specific factors should be used to choose an agent for competency restoration. Length of stay differences are likely related to the antipsychotic access differences between jails and state psychiatric facilities. Therefore, policies related to antipsychotic access should better align between state psychiatric facilities and jails to improve the capacity of the system and provide better care.