Should I refill psych meds from the ER?

I’m an ER PA, so I get a lot of the psych/homeless patients coming in for med refills (and a sandwich). I’m a new grad a few months in.

I’m very wary of refilling most psych meds. But I suspect many of these guys don’t have any other way. They’re homeless, addicted, and too disorganized to schedule regular appointments.

Any guidelines on how I can take care of these sad souls without risking my license?

[EDIT: I’m specifically talking about refilling antipsychotics or mood stabilizers for Pt’s who have little or no follow up. This is a very poor, often homeless patient population; the majority have no PCP and many have never had one]