Loxapine is a first-generation (typical) antipsychotic with dopamine D2 receptor antagonism as its primary mechanism, though it also has affinity for serotonin 5-HT2A receptors, making its pharmacology somewhat atypical.

Loxapine is available in multiple formulations, including oral capsules and an inhalation powder, the latter approved specifically for acute agitation in patients with schizophrenia or bipolar I disorder.

Sedation and extrapyramidal symptoms (EPS), including dystonia, akathisia, and parkinsonism, are common adverse effects due to its potent dopamine blockade in the nigrostriatal pathway.

Orthostatic hypotension can occur with loxapine due to its alpha-1 adrenergic blockade, requiring monitoring in elderly patients or those on antihypertensives.

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