as palmitate: InChI=1S/C39H57FN4O4/c1-3-4-5-6-7-8-9-10-11-12-13-14-15-18-36(45)47-34-17-16-24-44-38(34)41-29(2)32(39(44)46)23-27-43-25-21-30(22-26-43)37-33-20-19-31(40)28-35(33)48-42-37/h19-20,28,30,34H,3-18,21-27H2,1-2H3
In the US, paliperidone is indicated for the treatment of schizophrenia and for the treatment of schizoaffective disorder as monotherapy and as an adjunct to mood stabilizers and/or antidepressants.[4]
In the EU, paliperidone is indicated for the treatment of schizophrenia in adults and in adolescents fifteen years of age and older and for the treatment of schizoaffective disorder in adults.[8]
The most frequent side effects include headache, insomnia, sleepiness, parkinsonism (effects similar to Parkinson's disease such as shaking, muscle stiffness and slow movement), dystonia (involuntary muscle contractions), tremor (shaking), dizziness, akathisia (restlessness), agitation, anxiety, depression, increased weight, nausea, vomiting, constipation, dyspepsia (heartburn), diarrhea, dry mouth, tiredness, toothache, muscle and bone pain, back pain, asthenia (weakness), tachycardia (increased heart rate), high blood pressure, prolonged QT interval (an alteration of the electrical activity of the heart), upper respiratory tract infection (nose and throat infections) and cough.[8]
A 2023 study found that paliperidone may worsen verbal learning and memory compared to placebo in the early months of psychosis treatment.[18]
Discontinuation
The British National Formulary recommends a gradual withdrawal when discontinuing antipsychotics to avoid acute withdrawal syndrome or rapid relapse.[19] Symptoms of withdrawal commonly include nausea, vomiting, and loss of appetite.[20] Other symptoms may include restlessness, increased sweating, and trouble sleeping.[20] Less commonly there may be a feeling of the world spinning, numbness, or muscle pains.[20] Symptoms generally resolve after a short period of time.[20]
Paliperidone is the primary active metabolite of the older antipsychotic risperidone.[28][unreliable medical source?] While its specific mechanism of action is unknown, it is believed paliperidone and risperidone act via similar, if not identical, pathways.[29] Its efficacy is believed to result from central dopaminergic and serotonergic antagonism except Paliperidone like its parent compound functions as an inverse agonist at 5-HT2A 15. Paliperidone is also active by acting as an antagonist of the alpha 1 and alpha 2 adrenergic receptors as well as the H1 histaminergic receptors.[28] Food is known to increase the absorption of Invega type ER OROS prolonged-release tablets. Food increased exposure of paliperidone by up to 50-60%, however, half-life was not significantly affected. The effect was probably due to a delay in the transit of the ER OROS formulation in the upper part of the GI channel, resulting in increased absorption.[30]
Values are Ki (nM). The smaller the value, the more strongly the drug binds to the site.
History
Paliperidone (as Invega) was approved by the Food and Drug Administration (FDA) for the treatment of schizophrenia in 2006. Paliperidone was approved by the FDA for the treatment of schizoaffective disorder in 2009. The long-acting injectable form of paliperidone, marketed as Invega Sustenna in the US,[6] and Xeplion in the EU,[12] was approved by the FDA in July 2009.
It was initially approved in the European Union in 2007, for schizophrenia, the extended release form and use for schizoaffective disorder were approved in the EU in 2010, and extension to use in adolescents older than 15 years old was approved in 2014.[44]
Society and culture
Brand names
In May 2015, a formulation of paliperidone palmitate was approved by the FDA under the brand name Invega Trinza.[45][7] A similar prolonged release suspension was approved in 2016 by the European Medicines Agency originally under the brand name Paliperidone Janssen, later renamed to Trevicta.[46] On September 1, 2021, a newer formulation of paliperidone palmitate, Invega Hafyera, was approved by the US FDA.[5]
^ abcd"Invega EPAR". European Medicines Agency. June 25, 2007. Archived from the original on January 9, 2021. Retrieved February 1, 2024. Text was copied from this source which is copyright European Medicines Agency. Reproduction is authorized provided the source is acknowledged.
^"Byannli EPAR". European Medicines Agency. April 28, 2020. Archived from the original on March 5, 2023. Retrieved March 4, 2023.
^World Health Organization (2023). The selection and use of essential medicines 2023: web annex A: World Health Organization model list of essential medicines: 23rd list (2023). Geneva: World Health Organization. hdl:10665/371090. WHO/MHP/HPS/EML/2023.02.
^Leucht S, Cipriani A, Spineli L, Mavridis D, Orey D, Richter F, et al. (September 2013). "Comparative efficacy and tolerability of 15 antipsychotic drugs in schizophrenia: a multiple-treatments meta-analysis". Lancet. 382 (9896): 951–962. doi:10.1016/S0140-6736(13)60733-3. PMID23810019. S2CID32085212.
^BMJ Joint Formulary Committee, ed. (March 2009). "4.2.1". British National Formulary (57 ed.). United Kingdom: Royal Pharmaceutical Society of Great Britain. p. 192. ISBN978-0-85369-845-6. Withdrawal of antipsychotic drugs after long-term therapy should always be gradual and closely monitored to avoid the risk of acute withdrawal syndromes or rapid relapse.
^Wang JS, Ruan Y, Taylor RM, Donovan JL, Markowitz JS, DeVane CL (December 2004). "The brain entry of risperidone and 9-hydroxyrisperidone is greatly limited by P-glycoprotein". The International Journal of Neuropsychopharmacology. 7 (4): 415–419. doi:10.1017/S1461145704004390. PMID15683552.
^Parent M, Toussaint C, Gilson H (1983). "Long-term treatment of chronic psychotics with bromperidol decanoate: clinical and pharmacokinetic evaluation". Current Therapeutic Research. 34 (1): 1–6.
^ abJørgensen A, Overø KF (1980). "Clopenthixol and flupenthixol depot preparations in outpatient schizophrenics. III. Serum levels". Acta Psychiatrica Scandinavica. Supplementum. 279: 41–54. doi:10.1111/j.1600-0447.1980.tb07082.x. PMID6931472.
^ abReynolds JE (1993). "Anxiolytic sedatives, hypnotics and neuroleptics.". Martindale: The Extra Pharmacopoeia (30th ed.). London: Pharmaceutical Press. pp. 364–623.
^Ereshefsky L, Saklad SR, Jann MW, Davis CM, Richards A, Seidel DR (May 1984). "Future of depot neuroleptic therapy: pharmacokinetic and pharmacodynamic approaches". The Journal of Clinical Psychiatry. 45 (5 Pt 2): 50–9. PMID6143748.
^Young D, Ereshefsky L, Saklad SR, Jann MW, Garcia N (1984). Explaining the pharmacokinetics of fluphenazine through computer simulations. (Abstract.). 19th Annual Midyear Clinical Meeting of the American Society of Hospital Pharmacists. Dallas, Texas.
^Janssen PA, Niemegeers CJ, Schellekens KH, Lenaerts FM, Verbruggen FJ, van Nueten JM, et al. (November 1970). "The pharmacology of fluspirilene (R 6218), a potent, long-acting and injectable neuroleptic drug". Arzneimittel-Forschung. 20 (11): 1689–98. PMID4992598.
^Beresford R, Ward A (January 1987). "Haloperidol decanoate. A preliminary review of its pharmacodynamic and pharmacokinetic properties and therapeutic use in psychosis". Drugs. 33 (1): 31–49. doi:10.2165/00003495-198733010-00002. PMID3545764.
^Reyntigens AJ, Heykants JJ, Woestenborghs RJ, Gelders YG, Aerts TJ (1982). "Pharmacokinetics of haloperidol decanoate. A 2-year follow-up". International Pharmacopsychiatry. 17 (4): 238–46. doi:10.1159/000468580. PMID7185768.
^Larsson M, Axelsson R, Forsman A (1984). "On the pharmacokinetics of perphenazine: a clinical study of perphenazine enanthate and decanoate". Current Therapeutic Research. 36 (6): 1071–88.
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