Program? Does this mean you have had chronic issues with mental health and have been institutionalized for these issues, then upon leaving inpatient treatment were instructed to participate in a "half-way living situation" or outpatient program?
If this is the case I strongly discourage psychedelic exploration.
If you are really that determined then I guess you could talk to your doctors about getting off of your medications, have them supervise you as you stop your medications, and once you have fully stabilized free from these pharmaceuticals, and have been stable for quite some time, then would be a better time to think about exploring these psychedelic compounds, though you should be aware that those with a history of mental illness are at a high risk of regression or exacerbating prior mental illness, and have a far higher potential for negative reaction and HPPD.
It sounds like you are in a difficult situation, I don't know you personally, and I honestly think medications are far over prescribed, but if you are in a mental health program, and are working with doctors on mental health issues, and must be supervised taking anti-psychotic medication, then you may want to focus on that particular situation before you become distracted with psychedelics.
Again, if you are that determined, then you should probably wait until you have been stable for quite some time off of your pharmaceuticals before you attempt to explore entheogens. What ever you do DO NOT mix perphenazine or Escitalopram with ayahuasca.
There are many potentially dangerous drug interactions that can occur when mixing pharmaceuticals with ayahuasca, the mono amine oxidase inhibitor component (harmala alkaloids) are often the component which presents the most potential for hazardous interactions, and there are a number of pharmaceuticals which are dangerous to consume with an MAOI.
Escitalopram, which you said you were "checking" is an SSRI, combining this pharmaceutical with an MAOI could cause serotonin syndrome, resulting in a hypertensive crisis, and potentially being fatal...
I looked up perphenazine as well, nothing in depth, I just briefly read a few ncbi excerpts, though it seems perphenazine acts as a 5HT2a and 5HT2C receptor antagonist, and thus would diminish or fully block the effects of the dimethyltryptamine, or really any psychedelic for that matter. perphenazine also appeared to be an antagonist at various dopamine receptor sites...Again, I really did not look into this compound in any depth, I quickly reviewed some research papers on ncbi in direct response to this thread, so if I made any mistakes, please correct me. As this compound appears to be a serotonin antagonist, it warns below of potential for serotonin syndrome and hypertensive crisis if mixed with an MAOI, such as the harmala alkaloids found in ayahuasca....
dangerous drug interactions with mono amine oxidase inhibitors
·SSRI medications (incredibly dangerous to combine with an MAOI, presenting the risk of a hypertensive crisis, serotonin syndrome, which can be potentially fatal.)
·Tricyclic antidepressants (potential for seizures, hyperpyrexic crisis, and hypertensive crisis )
·Tetracyclic antidepressants (has potential to induce noradrenergic syndrome resulting in hypertensive crisis )
·Serotonin antagonists (potential for serotonin syndrome resulting in hypertensive crisis)
An extensive collection of interactions between MAOIs and various foods and drugs.
www.erowid.org
The link above goes into greater detail and covers more pharmaceuticals and potential interactions.
Just to be clear, my background is in chemistry, I'm not a doctor, who is really who you should be discussing these things with...
-eg
:roll: 
