Pipotiazine

475.666

475.67

254-659-6

L903J9JPYV

DTXSID40192913

N - Nervous system

97.8

5.10780

Solid

1.236g/cm3

650.4ºC at 760 mmHg

347.1ºC

1.607

1.27e-02 g/L

LD50 in mice (mg/kg): 108 i.p.; 360 s.c.; 440 orally (Julou)

Symptoms of overdose include severe extrapyramidal manifestations, hypotension, lethargy and sedation.

For the maintenance treatment of chronic non-agitated schizophrenic patients.

Pipotiazine has actions similar to those of other phenothiazines. Among the different phenothiazine derivatives, it appears to be less sedating and to have a weak propensity for causing hypotension or potentiating the effects of CNS depressants and anesthetics. However, it produces a high incidence of extra pyramidal reactions. It reduces activity of dopamine receptors in the limbic system. Its 5-HT antagonism helps normalize dopamine activity in the cortical regions.

Pipotiazine acts as an antagonist (blocking agent) on different postsysnaptic receptors -on dopaminergic-receptors (subtypes D1, D2, D3 and D4 - different antipsychotic properties on productive and unproductive symptoms), on serotonergic-receptors (5-HT1 and 5-HT2, with anxiolytic, antidepressive and antiaggressive properties as well as an attenuation of extrapypramidal side-effects, but also leading to weight gain, fall in blood pressure, sedation and ejaculation difficulties), on histaminergic-receptors (H1-receptors, sedation, antiemesis, vertigo, fall in blood pressure and weight gain), alpha1/alpha2-receptors (antisympathomimetic properties, lowering of blood pressure, reflex tachycardia, vertigo, sedation, hypersalivation and incontinence as well as sexual dysfunction, but may also attenuate pseudoparkinsonism - controversial) and finally on muscarinic (cholinergic) M1/M2-receptors (causing anticholinergic symptoms like dry mouth, blurred vision, obstipation, difficulty/inability to urinate, sinus tachycardia, ECG-changes and loss of memory, but the anticholinergic action may attenuate extrapyramidal side-effects).

19366 RP