I. Indications: Comorbid Depression

II. Mechanism

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

III. 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)

IV. 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

V. 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)

VI. Complications

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

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

VIII. 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

Images: Related links to external sites (from Google)

Cost: Medications

Phenelzine Sulfate (on 2/9/2012 at DrugStore.com)
Phenelzine Sulfate 15mg Tablets #30 for $29.99 ($1.00/unit)
Nardil (on 2/9/2012 at DrugStore.com)
Nardil 15mg Tablets #100 for $106.81 ($1.07/unit)
Tranylcypromine Sulfate (on 2/9/2012 at DrugStore.com)
Tranylcypromine Sulfate 10mg Tablets #100 for $112.60 ($1.13/unit)
Parnate (on 2/9/2012 at DrugStore.com)
Parnate 10mg Tablets #60 for $205.99 ($3.43/unit)

Ontology: Phenelzine (C0031392)

Definition (CSP) monoamine oxidase inhibitor used to treat depression and phobic disorders.
Concepts Organic Chemical (T109) , Pharmacologic Substance(T121)
MSH D010624
SnomedCT 387528000, 9500005
English 2 Phenethylhydrazine, 2-Phenethylhydrazine, Fenelzin, Phenelzine, Phenethylhydrazine, beta Phenylethylhydrazine, beta-Phenylethylhydrazine, phenelzine, Hydrazine, (2-phenylethyl)-, Phenelzine [Chemical/Ingredient], fenelzin, MAOI - Phenelzine, Phenelzine (product), Phenelzine (substance), PHENELZINE
Swedish Fenelzin
Czech fenelzin
Finnish Feneltsiini
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

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 Organic Chemical (T109) , Pharmacologic Substance(T121)
MSH D014191
SnomedCT 372891006, 89092006
English trans-2-Phenylcyclopropylamine, Tranylcypromine, trans 2 Phenylcyclopropylamine, Cyclopropanamine, 2-phenyl-, trans-(+-)-, tranylcypromine, SKF 385, Tranylcypromine [Chemical/Ingredient], MAOI - Tranylcypromine, Tranylcypromine (product), Tranylcypromine (substance), TRANYLCYPROMINE
Swedish Tranylcypromin
Czech tranylcypromin
Finnish Tranyylisypromiini
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

Ontology: Nardil (C0701388)

Concepts Organic Chemical (T109) , Pharmacologic Substance(T121)
MSH D010624
English nardil, Nardil, Parke Davis Brand of Phenelzine Sulfate, Pfizer Brand of Phenelzine Sulfate, United Drug Brand of Phenelzine Sulfate

Ontology: Parnate (C0701426)

Concepts Organic Chemical (T109) , Pharmacologic Substance(T121)
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