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Olanzapine-an atypical antipsychotic.

Olanzapine is one of those second generation antipsychotics approved for the treatment of schizophrenia and bipolar disorder. More

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Description

Olanzapine is one of those second generation antipsychotics approved for the treatment of schizophrenia and bipolar disorder.

Generic Name

Olanzapine-an atypical antipsychotic.

Chemical names

Olanzapine; Zyprexa; Zyprexa Zydis; Olansek

Brand names

Anzatric, Cinol, Cinol Forte, Cinol Plus, Dopin Tab, Dopin-F, Fostera, Jolyon-MD, Joyzol, Lano, Lanopin, Lezapin-MD, M-Olan, M-Olan Plus, Manza, Meltolan, Odozap, Olace, Oladay, Oladay-F, Olan, Olancare, Olandus, Olanex, O

IUPAC name

5-methyl-8-(4-methylpiperazin-1-yl)-4-thia-2,9-diazatricyclo[8.4.0.0³,?]tetradeca-1(14),3(7),5,8,10,12-hexaene

Pharmacokinetics

Actions

Olanzapine, an atypical antipsychotic agent, is used to treat both negative and positive symptoms of schizophrenia, acute mania with bipolar disorder, agitation, and psychotic symptoms in dementia. 

Dosage/Dosage form

5-10 mg daily

Therapeutic uses

For the treatment of schizophrenia and related psychotic disorders

Adverse effects/Side effects

Postural hypotension; constipation; dizziness; wt gain; agitation; insomnia; akathisia; tremor; personality disorders; oedema; somnolence; increased appetite; antimuscarinic effects; speech difficulty; exacerbation of Parkinson's disease; hallucinations; asthenia; increased body temperature; hyperprolactinaemia; bradycardia; asymptomatic elevations of hepatic transaminases.

Interaction

  • Olanzapine may antagonise the effects of levodopa and dopamine agonists.
  • Drugs that induce CYP1A2 or glucuronyl transferase enzymes e.g. omeprazole and rifampicin, may increase olanzapine clearance.
  • Inhibitors of CYP1A2 may potentially inhibit olanzapine elimination.
  • Carbamazepine may increase the clearance of olanzapine.
  • Concomitant admin of activated charcoal reduced the oral bioavailability of olanzapine by 50-60%.
  • Caution should be taken when olanzapine is administered with centrally acting drugs and alcohol.

Contraindications

Angle-closure glaucoma; lactation. IM: History of CVS disease, heart surgery.

Storage

Store at 15-30°C. 

Information

Molecular weight

312.432

Molecular formula

C17H20N4S

CAS number

132539-06-1

Precautions

  • Impaired hepatic, renal, cardiovascular function; paralytic ileus; prostatic hypertrophy;
  • DM;
  • Parkinsonism
  • Pregnancy.
  • History of blood dyscrasias, myelosuppression, seizures; dementia; dyslipidaemia.
  • Hypotension, bradyarrhythmia, hypoventilation; monitor BP carefully.