What is the primary risk of polypharmacy in psychiatric treatment?

The primary risk is that prescribing a large number of drugs can be counterproductive, as the pharmacological effects of the drugs can block each other or lead to adverse interactions.

How do atypical antipsychotics differ from selective dopamine antagonists?

Atypical antipsychotics are unique because they act on a large number of different receptors, including both serotonin and dopamine, whereas selective antagonists like sulpiride target specific dopamine receptors.

Can antipsychotics replace the need for separate antidepressants?

Yes, certain antipsychotics act as agonists on serotonin receptors, which provides inherent antidepressant effects, potentially making the prescription of additional serotonin-based antidepressants unnecessary.

The most common mistake psychiatrists make with psychiatric patients is prescribing them a large number of drugs, which is completely counterproductive, as the effects of the drugs can block each other and so on. In general, a patient should not take more than one antipsychotic. Pharmaceutical companies have invested extremely large sums of money in atypical antipsychotics, and they are unique in that they act on a large number of receptors. Only a few psychiatrists understand the effects of the drugs they prescribe (this would require studying something in English, not just package inserts and the poor professional medical journal Solen). Some antipsychotics are agonists on serotonin receptors, meaning they also have antidepressant effects, and such patients do not even need to be prescribed serotonin antidepressants.

Antipsychotics in general: their classification

Antipsychotics can be roughly divided into the following types, all of which are available on the modest Slovak pharmaceutical market: selective dopamine receptor antagonist (e.g. sulpiride), serotonin and dopamine antagonist (risperidone), serotonin agonist dopamine antagonist (e.g. quetiapine), serotonin and dopamine agonist (Aripiprazole – this will probably be a better antidepressant than an antipsychotic)

Other fields of medicine
Personally, I do not recognize the exaggerated esoteric views that all synthetic drugs and pharmacological products are bad, harmful, and should not be used. On the other hand, it must be acknowledged that there are also very controversial drugs, even from a scientific point of view, such as chemotherapy.
At other times, the problem lies in a poorly chosen drug for the given diagnosis.