section name header

Pronunciation ⬇

im-IP-ra-meen

Classifications ⬆ ⬇

Therapeutic Classification: antidepressants

Pharmacologic Classification: tricyclic antidepressants

Indications ⬆ ⬇

BEERS REMS


Unlabeled Use:
  • Adjunct in the management of chronic pain, incontinence (in adults), vascular headache prophylaxis, cluster headache, or insomnia.

Action ⬆ ⬇

  • Potentiates the effect of serotonin and norepinephrine.
  • Has significant anticholinergic properties.
Therapeutic effects:
  • Antidepressant action that develops slowly over several weeks.
  • Diminished incidence of enuresis.

Pharmacokinetics ⬆ ⬇

Absorption: Well absorbed from the GI tract.

Distribution: Widely distributed to tissues.

Protein Binding: 89–95%.

Metabolism/Excretion: Mostly metabolized by the liver (CYP2D6 isoenzyme) to desipramine; the CYP2D6 enzyme system exhibits genetic polymorphism; ∼7% of population may be poor metabolizers and may have significantly ↑ imipramine concentrations and an ↑ risk of adverse effects.

Half-Life: 8–16 hr.

Time/Action Profile ⬆ ⬇

(antidepressant effect)

ROUTEONSETPEAKDURATION
POhours2–6 wkweeks

Contraind./Precautions ⬆ ⬇

Contraindicated in:

Use Cautiously in:

Adv. Reactions/Side Effects ⬆ ⬇

CV: hypotension, ARRHYTHMIAS, ECG changes

Derm: photosensitivity

EENT: blurred vision, dry eyes

Endo: gynecomastia, SIADH

F and E: hyponatremia

GI: constipation, dry mouth, nausea, paralytic ileus

GU: ↓libido, urinary retention

Hemat: blood dyscrasias

Metab: weight gain

Neuro: drowsiness, fatigue, agitation, confusion, hallucinations, insomnia, SUICIDAL THOUGHTS/BEHAVIORS

Interactions ⬆ ⬇

Drug-drug:

Drug-Natural Products:

Route/Dosage ⬆ ⬇

Major Depressive Disorder

Enuresis

Availability ⬆ ⬇

(Generic available)

Assessment ⬆ ⬇

Lab Test Considerations:

Toxicity and Overdose:

Implementation ⬆ ⬇

Patient/Family Teaching ⬆ ⬇

Evaluation/Desired Outcomes ⬆ ⬇

US Brand Names ⬆ ⬇

Tofranil

Code ⬆

NDC Code