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Amitriptyline/perphenazine

From Wikipedia, the free encyclopedia
Combination drug
Pharmaceutical compound
Amitriptyline/perphenazine
Combination of
AmitriptylineTricyclic antidepressant
PerphenazineTypical antipsychotic
Clinical data
Trade namesDuo-Vil, Etrafon, Triavil, Triptafen
AHFS/Drugs.comConsumer Drug Information
License data
Routes of
administration
Oral
Legal status
Legal status
Identifiers
CAS Number
KEGG

Amitriptyline/perphenazine (Duo-Vil,Etrafon,Triavil,Triptafen) is a formulation that contains thetricyclic antidepressantamitriptyline and the medium-potencytypical (first-generation) antipsychotic,perphenazine. In the United States amitriptyline/perphenazine is marketed by Mylan Pharmaceuticals Inc. and Remedy Repack Inc.[1][2]

Medical uses

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In theUnited States amitriptyline/perphenazine is indicated for the treatment of patients with:[1][2][3]

  • Moderate to severeanxiety and/or agitation anddepression
  • Depression and anxiety in association with chronic physical disease
  • Schizophrenia with prominent depressive symptoms

Adverse effects

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Common (>1% incidence) adverse effects include
[1][2][4]
  • Blurred vision
  • Constipation
  • Dry mouth
  • Nasal congestion
  • Increased appetite
  • Weight gain
  • Nausea
  • Dizziness
  • Headache
  • Vomiting
Unknown frequency adverse effects include
[1][2][4]
  • Pigmentation of the cornea and lens
  • Hyperglycaemia
  • Hypoglycaemia
  • Disturbed concentration
  • Excitement
  • Anxiety
  • Insomnia
  • Restlessness
  • Nightmares
  • Weakness
  • Fatigue
  • Diaphoresis — excessive/abnormal sweating.
Uncommon/Rare adverse effects include
[1][2][4]
  • Tardive dyskinesia, an often irreversible adverse effect that usually results from chronic use antipsychotic medications, especially the high-potency first-generation antipsychotics. It is characterised by slow (hencetardive), involuntary, repetitive, purposeless muscle movements.
  • Neuroleptic malignant syndrome, a potentially fatal complication of antipsychotic drug use. It is characterised by the following symptoms:
  • Muscle rigidity
  • Tremors
  • Mental status change (e.g., hallucinations, agitation, stupor, confusion, etc.)
  • Hyperthermia
  • Autonomic instability (e.g., tachycardia, high blood pressure, diaphoresis, diarrhoea, etc.)

Pharmacology

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See also:Amitriptyline § Pharmacology, andPerphenazine § Pharmacology

Binding affinities (Ki [nM]; for human cloned receptors when available)[5][6][7]

Molecular targetAmitriptylineNortriptyline (Amitriptyline's active metabolite)PerphenazineNotes
SERT3.1316.5?It is this and its NET-inhibiting action is believed to give amitriptyline its antidepressant action.
NET22.44.37?See above.
DAT53803100?
5-HT1A450294421Binding for human brain receptors had to be substituted in amitriptyline (AMI) and nortriptyline's (NOR) cases
5-HT2A4.355.6Binding for cloned rat receptors had to be substituted for AMI & NOR. Binding to this receptor is believed to be what gives the newer (atypical) antipsychotics,clozapine,quetiapine,olanzapine,ziprasidone,risperidone,sertindole andzotepine their lower extrapyramidal side effect (EPS) liability.
5-HT2C6.158.5132(Binding) As above. This action is believed to be partly responsible for the lower EPS liability of newer antipsychotics and also responsible for their higher weight gain liability compared to most typical antipsychotics.
5-HT610314817Cloned rat receptor was substituted for NOR's binding.
5-HT7114?23Cloned rat receptor was substituted for AMI.
α1A245510Human brain receptors were substituted for AMI and NOR.
α2A6902030810.5As above.
D2146025700.16As above.
D3206?0.13Human receptors (their source was undefined) had to be substituted for AMI.
H11.115.18This receptor is at least partly responsible for the sedating effects of these three drugs and hence this combination product. Possibly also partly responsible for their weight gain liability.
M112.9401500This is the main receptor responsible for the anticholinergic side effects mentioned above.
M325.9501848This receptor is believed to be partly responsible for the metabolic adverse effects of theatypical antipsychotics.
σ300200031.5All three values are for binding to the guinea pig brain receptors.

See also

[edit]

References

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  1. ^abcde"PERPHENAZINE AND AMITRIPTYLINE HYDROCHLORIDE tablet, film coated [Mylan Pharmaceuticals Inc.]".DailyMed. National Library of Medicine. Retrieved7 October 2013.
  2. ^abcde"PERPHENAZINE AND AMITRIPTYLINE HYDROCHLORIDE tablet [REMEDYREPACK INC. ]".DailyMed. National Library of Medicine. Retrieved7 October 2013.
  3. ^amitriptyline/perphenazine (Rx) - Etrafon, Triptafen, Triavil [Internet]. Medscape Reference. [cited 2013 Oct 7]. Available from:http://reference.medscape.com/drug/etrafon-triptafen-amitriptyline-perphenazine-342946
  4. ^abcTruven Health Analytics, Inc. DRUGDEX® System (Internet) [cited 2013 Oct 7]. Greenwood Village, CO: Thomsen Healthcare; 2013.
  5. ^National Institute of Mental Health. PDSD Ki Database (Internet) [cited 2013 Oct 7]. Chapel Hill (NC): University of North Carolina. 1998-2013. Available from:"PDSP Database - UNC". Archived fromthe original on 2013-11-08. Retrieved2013-12-01.
  6. ^Brunton L, Chabner B, Knollman B (2010).Goodman and Gilman's The Pharmacological Basis of Therapeutics (Twelfth ed.). McGraw Hill Professional.
  7. ^Taylor D, Paton C, Kapur S, Taylor D (2012).The Maudsley prescribing guidelines in psychiatry (11th ed.). Chichester, West Sussex: John Wiley & Sons.
SSRIsTooltip Selective serotonin reuptake inhibitors
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