Monoamine Oxidase Inhibitor

Aka: Monoamine Oxidase Inhibitor, MAO inhibitor, Phenelzine, Nardil, Tranylcypromine, Parnate

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II. Indications: Comorbid Depression

  1. Anxiety Disorder
  2. Atypical Depression
  3. Refractory Depression
  4. Bulimia
  5. Social Phobia

III. Mechanism

  1. Inhibits monoamine oxidase
  2. Increases synaptic concentration of monoamines
    1. Serotonin
    2. Norepinephrine

IV. Precautions

  1. Tyramine-free diet must be followed
    1. Continue for two weeks after stopping medication
    2. See Tyramine Containing Foods
  2. Stop 2 weeks before starting another Antidepressant
  3. Taper Nardil slowly when stopping
    1. See Antidepressant Withdrawal
    2. Reduce dose by 15 mg/day every 2 weeks (or 10%/week)

V. Preparations: Hydrazine

  1. Isocarboxazid (Marplan): No longer manufactured in U.S.
    1. Dosing: 10 mg PO bid
    2. Maximum: 60 mg per day
  2. Phenelzine (Nardil)
    1. Dosing: 15 mg PO tid
    2. Maximum: 90 mg per day

VI. Preparations Non-hydrazine

  1. Tranylcypromine (Parnate)
    1. Dosing: 10-40 mg/day in divided doses
    2. Maximum: 60 mg per day
  2. Parkinsonian agents
    1. Selegiline (Eldepryl)

VII. Complications

  1. Hypertensive Crisis (life-threatening)
    1. Occurs if tyramine or Sympathomimetic exposure
  2. Serotonin Syndrome
    1. Occurs with concurrent use of Serotoninergic drug

VIII. Drug Interactions (Do not use with these medications)

  1. Tyramine Containing Foods
  2. Sympathomimetics (Ephedra, Ephedrine)
  3. Serotoninergic medications
  4. Selective Serotonin Reuptake Inhibitors (SSRI)

IX. Adverse Effects

  1. Anti-Histaminergic effects
    1. Dizziness
    2. Sedation
    3. Orthostatic Hypotension
    4. Weight gain
  2. Dopaminergic effects
    1. Insomnia
    2. Myoclonal jerks
  3. Serotoninergic Effects
    1. Sexual Dysfunction
    2. Headache
  4. Anticholinergic Toxicity
    1. Dry Mouth
    2. Constipation
    3. Blurred Vision
    4. Urinary hesitancy
    5. Nausea
    6. Memory Dysfunction
  5. Other Effects
    1. Peripheral Edema
    2. Weakness

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Cost: Medications

phenelzine (on 5/17/2017 at Medicaid.Gov Survey of pharmacy drug pricing)
PHENELZINE SULFATE 15 MG TAB Generic $0.48 each
nardil (on 6/1/2017 at Medicaid.Gov Survey of pharmacy drug pricing)
NARDIL 15 MG TABLET Generic $0.48 each
tranylcypromine (on 5/17/2017 at Medicaid.Gov Survey of pharmacy drug pricing)
TRANYLCYPROMINE SULF 10 MG TAB Generic $1.67 each
FPNotebook does not benefit financially from showing this medication data or their pharmacy links. This information is provided only to help medical providers and their patients see relative costs. Insurance plans negotiate lower medication prices with suppliers. Prices shown here are out of pocket, non-negotiated rates. See Needy Meds for financial assistance information.

Ontology: Phenelzine (C0031392)

Definition (MSH) One of the MONOAMINE OXIDASE INHIBITORS used to treat DEPRESSION; PHOBIC DISORDERS; and PANIC.
Definition (CSP) monoamine oxidase inhibitor used to treat depression and phobic disorders.
Concepts Pharmacologic Substance (T121) , Organic Chemical (T109)
MSH D010624
SnomedCT 387528000, 9500005
LNC LP17998-3, MTHU024864
English 2 Phenethylhydrazine, 2-Phenethylhydrazine, Fenelzin, Phenelzine, Phenethylhydrazine, beta Phenylethylhydrazine, beta-Phenylethylhydrazine, phenelzine, Hydrazine, (2-phenylethyl)-, Phenelzine [Chemical/Ingredient], fenelzin, PHENELZINE, MAOI - Phenelzine, Phenelzine (product), Phenelzine (substance)
Swedish Fenelzin
Czech fenelzin
Finnish Feneltsiini
Russian FENELZIN, ФЕНЕЛЗИН
Japanese フェネルジン
Italian beta-Feniletilidrazina, Fenelzina
Spanish fenelcina, fenelzina (producto), fenelcina (producto), fenelcina (sustancia), fenelzina (sustancia), fenelzina, Fenelzina, Fenelzin
Polish Nardil, Fenelzyna
French Phénelzine
German Fenelzin, Phenelzin
Portuguese Fenelzina
Derived from the NIH UMLS (Unified Medical Language System)

Ontology: Tranylcypromine (C0040778)

Definition (MSH) A propylamine formed from the cyclization of the side chain of amphetamine. This monoamine oxidase inhibitor is effective in the treatment of major depression, dysthymic disorder, and atypical depression. It also is useful in panic and phobic disorders. (From AMA Drug Evaluations Annual, 1994, p311)
Concepts Pharmacologic Substance (T121) , Organic Chemical (T109)
MSH D014191
SnomedCT 372891006, 89092006
LNC LP14552-1, MTHU001574
English trans-2-Phenylcyclopropylamine, Tranylcypromine, trans 2 Phenylcyclopropylamine, Cyclopropanamine, 2-phenyl-, trans-(+-)-, tranylcypromine, SKF 385, Tranylcypromine [Chemical/Ingredient], TRANYLCYPROMINE, MAOI - Tranylcypromine, Tranylcypromine (product), Tranylcypromine (substance)
Swedish Tranylcypromin
Czech tranylcypromin
Finnish Tranyylisypromiini
Russian TRANILTSIPROMIN, ТРАНИЛЦИПРОМИН
Japanese トラニルシプロミン
Polish Tranylcypromina
Spanish tranilcipromina (producto), tranilcipromina (sustancia), tranilcipromina, Tranilcipromina
French Tranylcypromine
German Tranylcypromin
Italian Tranilcipromina
Portuguese Tranilcipromina
Derived from the NIH UMLS (Unified Medical Language System)

Ontology: Nardil (C0701388)

Concepts Pharmacologic Substance (T121) , Organic Chemical (T109)
MSH D010624
English nardil, Nardil, Parke Davis Brand of Phenelzine Sulfate, Pfizer Brand of Phenelzine Sulfate, United Drug Brand of Phenelzine Sulfate
Derived from the NIH UMLS (Unified Medical Language System)

Ontology: Parnate (C0701426)

Concepts Pharmacologic Substance (T121) , Organic Chemical (T109)
MSH D014191
English parnate, Parnate, Allphar Brand of Tranylcypromine Sulfate, GlaxoSmithKline Brand of Tranylcypromine Sulfate, Goldshield Brand of Tranylcypromine Sulfate, Link Brand of Tranylcypromine Sulfate, SmithKline Brand of Tranylcypromine Sulfate
Derived from the NIH UMLS (Unified Medical Language System)

Related Topics in Pharmacology

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