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Tofranil

Imipramine (tradenames: Janimine®, Tofranil®) is an antidepressant medication belonging to a class called tricyclic antidepressants of the dibenzazepine group, mainly used in the treatment of clinical depression and enuresis. more...

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Imipramine was, in the late 1950s, the first tricyclic antidepressant to be developed (by Ciba-Geigy). Initially, it was tried against psychotic disorders (e.g. schizophrenia), but proved insufficient. During the clinical studies its antidepressant qualities, unsurpassed until today, became evident. Subsequently it was extensively used as standard antidepressant and later served as a prototypical drug for the development of the later released tricyclics. It is not as commonly used today but sometimes used to treat major depression as a second-line treatment. It has also seen limited use in the treatment of migraines, ADD and post concussive syndrome. Imipramine has additional indications for the treatment of panic attacks and chronic pain. In pediatric patients it is relatively frequently used to treat pavor nocturnus and enuresis.

Mechanism of Action

Imipramine, a tertiary amine, inhibits the reuptake of serotonin more so than most secondary amine tricyclics, meaning that it blocks the reuptake of neurotransmitters serotonin and noradrenaline almost equally.

Metabolism

Imipramine is converted to desipramine, another TCA, in the body.

Contraindications and Precautions

See Tricyclic antidepressants

Side Effects

Some common side effects of the drug include: tremors, dry mouth, blurred vision, constipation, insomnia, drowsiness, perspiration, flushing and weight gain. Agitation, irritability, confusion, and delirium are also possible, particular in the elderly.

Dosage

  • Ambulatory patients : starting with 25 to 75mg daily, increasing up to a maximum of 200mg daily, after remission dose is often reduced to 50-100mg daily.
  • Hospitalized patients : starting with 3 time 25mg, increasing to 200mg. Up to 300mg may be given in resistant cases. After remission dose is often reduced to 50-100mg daily.
  • Pediatric patients : starting with 10mg daily the dose is adjusted according to the severity of the symptoms to be treated, the side-effects encountered and the weight of the patient.

Overdose

The symptoms and the treatment of an overdose are largely the same as for the other tricyclic antidepressants. Cardinal symptoms are cardial and neurological disturbances. Any intake by children should be considered as serious and potentially fatal.

Read more at Wikipedia.org


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