This is an unofficial archive of PsychonautWiki as of 2025-08-08T03:33:20Z. Content on this page may be outdated, incomplete, or inaccurate. Please refer to the original page for the most up-to-date information.
WARNING: Always start with lower doses due to differences between individual body weight, tolerance, metabolism, and personal sensitivity. See responsible use section.
DISCLAIMER: PW's dosage information is gathered from users and resources for educational purposes only. It is not a recommendation and should be verified with other sources for accuracy.
Olanzapine, first branded as Zyprexa, is a widely-used antipsychotic substance of the thienobenzodiazepine chemical class. It produces sedating and neuroleptic effects when administered. Olanzapine can be given by mouth and can also be injected into a muscle. Olanzapine might be useful as a trip aborter, especially for stimulants, as it blocks the action of dopamine. [citation needed]
Olanzapine is a thienobenzodiazepine. It includes a piperazine moiety at R4.
Olanzapine is classified as a thienobenzodiazepine derivative. Its chemical structure consists of a fused tricyclic system incorporating a thiophene ring and a diazepine ring. Specifically, olanzapine features a piperazine substituent at the R4 position of the diazepine moiety. This piperazine ring is believed to contribute to its affinity for various neurotransmitter receptors, particularly serotonergic and dopaminergic sites. The compound has a molecular formula of C17H20N4OS, with a molecular weight of 312.44 g/mol. Its IUPAC name is 2-methyl-4-(4-methyl-1-piperazinyl)-10H-thieno[2,3-b][1,5]benzodiazepine. Syrex1013 (talk) 00:26, 27 June 2025 (UTC)
Pharmacology
Olanzapine is known to cause weight gain and induce diabetes mellitus type 2 more frequently than other antipsychotics. However, it is less likely to produce tardive dyskinesia or an extrapyramidal reaction. It appears to be an effective treatment for schizophrenia.[2]
Subjective effects
Physical effects
Hunger - This often happens over a course of treatment and not with one use.
Sedation - This effect is more often uncomfortably tiring than relaxing.
Anxiety suppression - This is mediated by olanzapine's antidopaminergic, antiadrenergic, and antiserotonergic action rather than GABA-related activity.
↑Leucht, S., Cipriani, A., Spineli, L., Mavridis, D., Örey, D., Richter, F., ... & Kissling, W. (2013). Comparative efficacy and tolerability of 15 antipsychotic drugs in schizophrenia: a multiple-treatments meta-analysis. The Lancet, 382(9896), 951-962.