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Olanzapine occupancy at 5-HT 2A receptor are high at all doses (5 mg to 20 mg). It is reported that 5 mg dose of olanzapine produced a mean occupancy of 85% at 5 mg, 88% at 10 mg, and 93% at 20 mg dose . [95] Olanzapine had the highest affinity of any second-generation antipsychotic towards the P-glycoprotein in one in vitro study. [96]
Very common adverse effects of olanzapine, occurring more than 10%, include: Weight gain (dose-dependent). Weight gain of over 7% of a person's initial body weight prior to treatment is in this category of very common too with some estimates of its incidence putting it at around 40.6%.
A study being conducted at the Yale University School of Medicine has estimated that "32% of people develop persistent tics after 5 years on major tranquilizers, 57% by 15 years, and 68% by 25 years." [50] More drastic data was found during a longitudinal study conducted on individuals 45 years of age and older who were taking antipsychotic ...
The mainstay of treatment is antipsychotic medication, including olanzapine and risperidone, along with counseling, job training, and social rehabilitation. [7] Up to a third of people do not respond to initial antipsychotics, in which case clozapine is offered. [ 29 ]
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Low IC 50 or high pIC 50 values indicate tighter binding (pIC 50 of 8.0 = IC 50 of 10nM, pIC 50 of 9.0 = IC 50 of 1nM, etc.) These are non subtype selective IC 50 values averaged across all GABA A receptor subtypes , so subtype selective compounds with strong binding at one subtype but weak at others will appear unusually weak due to averaging ...
The risk of developing tardive dyskinesia after chronic typical antipsychotic usage varies on several factors, such as age and gender, as well as the specific antipsychotic used. The commonly reported incidence of TD among younger patients is about 5% per year. Among older patients incidence rates as high as 20% per year have been reported.
At least five atypical antipsychotics (lumateperone, [48] cariprazine, [49] lurasidone, [50] olanzapine, [51] and quetiapine [52]) have also been found to possess efficacy in the treatment of bipolar depression as a monotherapy, whereas only olanzapine [53] and quetiapine [54] [55] have been proven to be effective broad-spectrum (i.e., against ...