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Etrafon Forte (amitriptyline / perphenazine) Disease Interactions

There are 38 disease interactions with Etrafon Forte (amitriptyline / perphenazine):

Major

Atypical Antipsychotic Agents (Includes Etrafon Forte) ↔ Dementia

Severe Potential Hazard, High plausibility

Applies to: Dementia

Elderly patients with dementia-related psychosis treated with antipsychotic drugs are at an increased risk of death, mostly from cardiovascular (e.g., heart failure, sudden death) or infectious (e.g., pneumonia) causes. A causal relationship with antipsychotic use has not been established. In controlled trials, treatment with some atypical antipsychotic drugs had was also associated with an increased risk of cerebrovascular adverse events (e.g., stroke, transient ischemic attack), including fatalities, in elderly patients with dementia-related psychosis. These agents are not approved for the treatment of patients with dementia-related psychosis.

Major

Perphenazine (Includes Etrafon Forte) ↔ Liver Damage

Severe Potential Hazard, High plausibility

Applies to: Liver Disease

The manufacturer considers the use of perphenazine to be contraindicated in patients with preexisting liver damage. Phenothiazines are extensively metabolized by the liver and may accumulate in patients with hepatic impairment.

Major

Phenothiazines (Includes Etrafon Forte) ↔ Acute Alcohol Intoxication

Severe Potential Hazard, High plausibility

Applies to: Alcoholism

The use of phenothiazines is contraindicated in patients with acute alcohol intoxication exhibiting depressed vital signs. The central nervous system depressant effects of phenothiazines may be additive with those of alcohol. Severe respiratory depression and respiratory arrest may occur. Therapy with phenothiazines should be administered cautiously in patients who might be prone to acute alcohol intake.

References

  1. "Product Information. Trilafon (perphenazine)" Schering Corporation, Kenilworth, NJ.
  2. "Product Information. Vesprin (triflupromazine)" Bristol-Myers Squibb, Princeton, NJ.
  3. "Product Information. Compazine (prochlorperazine)." SmithKline Beecham, Philadelphia, PA.
View all 13 references
Major

Phenothiazines (Includes Etrafon Forte) ↔ Cardiovascular Disease

Severe Potential Hazard, Moderate plausibility

Applies to: Cardiovascular Disease, Cerebrovascular Insufficiency, History - Cerebrovascular Disease, History - Myocardial Infarction, Hypotension, Pheochromocytoma, Dehydration

Phenothiazines may cause hypotension (including orthostatic hypotension), reflex tachycardia, increased pulse rate, syncope, and dizziness, particularly after the first parenteral dose but rarely after the first oral dose. Low-potency agents such as chlorpromazine and thioridazine are more likely to induce these effects, which usually subside within the first couple of hours following administration. Tolerance to the hypotensive effects often develops after a few doses. Rarely, fatal cardiac arrest has occurred secondary to severe hypotension. Other reported adverse cardiovascular effects include edema, thrombosis, and ECG abnormalities such as PR and QT interval prolongation, diffuse T-wave flattening, and ST segment depression. Therapy with phenothiazines should be avoided or otherwise administered cautiously in patients with severe cardiovascular disease, pheochromocytoma, a predisposition to hypotension, or conditions that could be exacerbated by hypotension such as a history of myocardial infarction, angina, or ischemic stroke. Close monitoring of cardiovascular status, including ECG changes, is recommended at all dosages. If parenteral therapy is given, patients should be in a supine position during administration and for at least 30 to 60 minutes afterwards. Patients who experience orthostatic hypotension should be cautioned not to rise too abruptly. Occasionally, when severe, hypotension may require treatment with vasoconstrictive agents such as norepinephrine or phenylephrine. Epinephrine should not be used, however, since phenothiazines can reverse its vasopressor effects and cause a further lowering of blood pressure.

References

  1. "Product Information. Phenergan (promethazine)." Wyeth-Ayerst Laboratories, Philadelphia, PA.
  2. Jones J, Sklar D, Dougherty J, White W "Randomized double-blind trial of intravenous prochlorperazine for the treatment of acute headache." JAMA 261 (1989): 1174-6
  3. "Product Information. Stelazine (trifluoperazine)" SmithKline Beecham, Philadelphia, PA.
View all 24 references
Major

Phenothiazines (Includes Etrafon Forte) ↔ Cns Depression

Severe Potential Hazard, High plausibility

Applies to: Altered Consciousness, Respiratory Arrest

The use of phenothiazines is contraindicated in comatose patients and patients with severe central nervous system depression. Phenothiazines may potentiate the CNS and respiratory depression in these patients.

References

  1. "Product Information. Mellaril (thioridazine)." Sandoz Pharmaceuticals Corporation, East Hanover, NJ.
  2. "Product Information. Prolixin (fluphenazine)." Bristol-Myers Squibb, Princeton, NJ.
  3. "Product Information. Stelazine (trifluoperazine)" SmithKline Beecham, Philadelphia, PA.
View all 13 references
Major

Phenothiazines (Includes Etrafon Forte) ↔ Head Injury

Severe Potential Hazard, High plausibility

Applies to: Head Injury

The use of phenothiazines is contraindicated in patients with suspected or established subcortical brain damage, with or without hypothalamic involvement. Phenothiazines can interfere with thermoregulatory mechanisms, and a hyperthermic reaction with temperatures in excess of 104 F may occur in such patients, sometimes not until 14 to 16 hours after drug administration.

References

  1. "Product Information. Trilafon (perphenazine)" Schering Corporation, Kenilworth, NJ.
  2. "Product Information. Vesprin (triflupromazine)" Bristol-Myers Squibb, Princeton, NJ.
  3. "Product Information. Serentil (mesoridazine)" Boehringer-Ingelheim, Ridgefield, CT.
View all 13 references
Major

Tcas (Includes Etrafon Forte) ↔ Anticholinergic Effects

Severe Potential Hazard, High plausibility

Applies to: Glaucoma/Intraocular Hypertension, Urinary Retention, Gastrointestinal Obstruction

Tricyclic and tetracyclic antidepressants (TCAs) have anticholinergic activity, to which elderly patients are particularly sensitive. Tertiary amines such as amitriptyline and trimipramine tend to exhibit greater anticholinergic effects than other agents in the class. Therapy with TCAs should be administered cautiously in patients with preexisting conditions that are likely to be exacerbated by anticholinergic activity, such as urinary retention or obstruction; angle-closure glaucoma, untreated intraocular hypertension, or uncontrolled primary open-angle glaucoma; and gastrointestinal obstructive disorders. In patients with angle-closure glaucoma, even average doses can precipitate an attack. Glaucoma should be treated and under control prior to initiation of therapy with TCAs, and intraocular pressure monitored during therapy.

References

  1. Remick RA, Keller FD, Buchanan RA, Gibson RE, Fleming JA "A comparison of the efficacy and safety of alprazolam and desipramine in depressed outpatients." Can J Psychiatry 33 (1988): 590-4
  2. Rosen J, Pollock BG, Altieri LP, Jonas EA "Treatment of nortriptyline's side effects in elderly patients: a double-blind study of bethanechol." Am J Psychiatry 150 (1993): 1249-51
  3. Gershon S "Comparative side effect profiles of trazodone and imipramine: special reference to the geriatric population." Psychopathology 17 (1984): 39-50
View all 33 references
Major

Tcas (Includes Etrafon Forte) ↔ Cardiovascular Disease

Severe Potential Hazard, High plausibility

Applies to: Cardiovascular Disease, Hyperthyroidism, Cerebrovascular Insufficiency, History - Cerebrovascular Disease, History - Myocardial Infarction, Hypotension, Dehydration

Tricyclic and tetracyclic antidepressants (TCAs) may cause orthostatic hypotension, reflex tachycardia, syncope, and dizziness, particularly during initiation of therapy or rapid escalation of dosage. Imipramine appears to have the greatest propensity to induce these effects, while secondary amines such as nortriptyline may do so less frequently. Tolerance to the hypotensive effects often develops after a few doses to a few weeks. Rarely, collapse and sudden death have occurred secondary to severe hypotension. Other reported adverse cardiovascular effects include tachycardia, arrhythmias, heart block, hypertension, thrombosis, thrombophlebitis, myocardial infarction, strokes, congestive heart failure, and ECG abnormalities such as PR and QT interval prolongation. Therapy with TCAs should be avoided during the acute recovery phase following myocardial infarction, and should be administered only with extreme caution in patients with hyperthyroidism, a history of cardiovascular or cerebrovascular disease, or a predisposition to hypotension. Close monitoring of cardiovascular status, including ECG changes, is recommended at all dosages. Many of the newer antidepressants, including bupropion and the selective serotonin reuptake inhibitors (SSRIs), are considerably less or minimally cardiotoxic and may be appropriate alternatives.

References

  1. "Product Information. Tofranil (imipramine)." Novartis Pharmaceuticals, East Hanover, NJ.
  2. "Product Information. Anafranil (clomipramine)." Basel Pharmaceuticals, Summit, NJ.
  3. DiPiro JT, Talbert RL, Yee GC, Matzke GR, Wells BG, Posey LM "Pharmacotherapy: A Pathophysiologic Approach 4th" Stamford, CT: Appleton & Lange (1999):
View all 38 references
Major

Tcas (Includes Etrafon Forte) ↔ Pheochromocytoma

Severe Potential Hazard, Moderate plausibility

Applies to: Pheochromocytoma

Tricyclic and tetracyclic antidepressants (TCAs) may potentiate the effects of circulating catecholamines. Enhanced sympathetic activity can provoke hypertensive crises in patients with pheochromocytoma or other tumors of the adrenal medulla, such as some neuroblastomas. Therapy with TCAs should be administered cautiously in patients with these tumors.

References

  1. "Product Information. Pamelor (nortriptyline)." Sandoz Pharmaceuticals Corporation, East Hanover, NJ.
  2. "Product Information. Sinequan (doxepin)." Roerig Division, New York, NY.
  3. "Product Information. Anafranil (clomipramine)." Basel Pharmaceuticals, Summit, NJ.
View all 12 references
Major

Tcas (Includes Etrafon Forte) ↔ Seizure Disorders

Severe Potential Hazard, High plausibility

Applies to: Alcoholism, CNS Disorder

Tricyclic antidepressants (TCAs) can lower the seizure threshold and trigger seizures in a dose-dependent manner. The risk appears to be greater with amoxapine and the tertiary amines (amitriptyline, doxepin, imipramine, trimipramine) than with the secondary amines (desipramine, nortriptyline, protriptyline). An incidence of up to 0.6% has been reported in patients treated with imipramine dosages > 200 mg/day. However, the incidence is generally much lower when smaller doses are used in patients without a predisposition to seizures. Therapy with TCAs should be administered cautiously in patients with a history of seizures or other predisposing factors, such as head trauma, CNS abnormalities, and alcoholism. High dosages should be avoided if possible.

References

  1. Waghray SN, Francis K "Epilepsy as an adverse reaction to combined therapy of MAOIs and tricyclics." J R Soc Med 77 (1984): 346
  2. "Product Information. Vivactil (protriptyline)" Merck & Co, Inc, West Point, PA.
  3. "Product Information. Asendin (amoxapine)" Lederle Laboratories, Wayne, NJ.
View all 23 references
Major

Tricyclic Antidepressants (Includes Etrafon Forte) ↔ Acute Myocardial Infarction Recovery

Severe Potential Hazard, Moderate plausibility

Applies to: Myocardial Infarction

The use of most tricyclic antidepressants is contraindicated in patients that are going through the acute recovery period after a myocardial infarction.

Major

Tricyclic Antidepressants (Includes Etrafon Forte) ↔ Cardiovascular Disease

Severe Potential Hazard, Moderate plausibility

Applies to: Cardiovascular Disease

Tricyclic antidepressants should be used with extreme caution in patients with evidence of cardiovascular disease because of the possibility of fluctuations in the blood pressure, arrhythmias, conduction defects, tachycardia, myocardial infarction and stroke. This also applies to patients who have family history of sudden death, cardiac dysrhythmias, or conduction disturbances. In some cases a gradual dose titration is recommended.

Major

Tricyclic Antidepressants (Includes Etrafon Forte) ↔ Depression

Severe Potential Hazard, Moderate plausibility

Applies to: Bipolar Disorder, Depression, Psychosis

Adult and pediatric patients with depression and other psychiatric disorders may experience worsening of their symptoms and may have the emergence of suicidal thoughts and behavior. Patients should be monitored appropriately and observed closely for worsening of their symptoms, suicidality or changes in their behavior, especially during the first few months of treatment, and at times of dose changes. Families and caregivers should be advised of the need for close observation and communication with the treating physician. Discontinuing the medication should be considered if symptoms are persistently worse, or abrupt in onset. It may be prudent to refrain from dispensing large quantities of medication to these patients.

Major

Tricyclic Antidepressants (Includes Etrafon Forte) ↔ Seizure Disorders

Severe Potential Hazard, Moderate plausibility

Applies to: Seizures, Alcoholism, CNS Disorder

Tricyclic antidepressants (TCAs), can lower the seizure threshold and trigger seizures. These drugs should be used with extreme caution in patients with a history of seizures, or other predisposing factors, such as head trauma, CNS abnormalities, and alcoholism. Daily dose restrictions might apply for specific antidepressants. Physicians are encouraged to get additional dosing recommendations on the manufacturer's prescribing information.

References

  1. Pascual J, Combarros O, Berciano J "Partial status epilepticus following single low dose of chlorimipramine in a patient on MAO-inhibitor treatment." Clin Neuropharmacol 10 (1987): 565-7
  2. Settle EC "Antidepressant drugs: disturbing and potentially dangerous adverse effects." J Clin Psychiatry 59 Suppl 16 (1998): 25-30
  3. "Product Information. Anafranil (clomipramine)." Basel Pharmaceuticals, Summit, NJ.
View all 5 references
Moderate

Phenothiazines (Includes Etrafon Forte) ↔ Anticholinergic Effects

Moderate Potential Hazard, Moderate plausibility

Applies to: Gastrointestinal Obstruction, Glaucoma/Intraocular Hypertension, Urinary Retention

Phenothiazines have anticholinergic activity, to which elderly patients are particularly sensitive. Low-potency agents such as chlorpromazine and thioridazine tend to exhibit greater anticholinergic effects than other agents in the class. Therapy with phenothiazines should be administered cautiously in patients with preexisting conditions that are likely to be exacerbated by anticholinergic activity, such as urinary retention or obstruction; angle-closure glaucoma, untreated intraocular hypertension, or uncontrolled primary open-angle glaucoma; and gastrointestinal obstructive disorders.

References

  1. "Product Information. Mellaril (thioridazine)." Sandoz Pharmaceuticals Corporation, East Hanover, NJ.
  2. "Product Information. Stelazine (trifluoperazine)" SmithKline Beecham, Philadelphia, PA.
  3. "Product Information. Sparine (promazine)." Wyeth-Ayerst Laboratories, Philadelphia, PA.
View all 11 references
Moderate

Phenothiazines (Includes Etrafon Forte) ↔ Breast Cancer

Moderate Potential Hazard, Moderate plausibility

Applies to: Breast Cancer

The chronic use of phenothiazines is associated with persistent elevations in prolactin levels. Based on in vitro data, approximately one-third of human breast cancers are thought to be prolactin-dependent. The clinical significance of this observation is unknown. Chronic administration of neuroleptic drugs has been associated with mammary tumorigenesis in rodent studies but not in human clinical or epidemiologic studies. Therapy with phenothiazines should be administered cautiously in patients with existing or suspected malignancy of the breast.

References

  1. "Product Information. Prolixin (fluphenazine)." Bristol-Myers Squibb, Princeton, NJ.
  2. "Product Information. Mellaril (thioridazine)." Sandoz Pharmaceuticals Corporation, East Hanover, NJ.
  3. "Product Information. Stelazine (trifluoperazine)" SmithKline Beecham, Philadelphia, PA.
View all 16 references
Moderate

Phenothiazines (Includes Etrafon Forte) ↔ Dystonic Reactions

Moderate Potential Hazard, Moderate plausibility

Applies to: Dehydration, Hypocalcemia

Phenothiazines may cause acute, dose-related dystonic reactions secondary to central dopaminergic blockade. These reactions are characterized by spastic contraction of discrete muscle groups and may include torticollis, opisthotonos, carpopedal spasm, trismus, difficulty swallowing, perioral spasms with protrusion of the tongue, and oculogyric crisis. Onset is usually within 24 to 96 hours following initiation of therapy or an increase in dosage. Risk factors include young age, male gender, use of high-potency agents (e.g., fluphenazine, perphenazine, trifluoperazine), high dosages, and IM administration. Therapy with phenothiazines should be administered cautiously in patients, particularly children, with hypocalcemia or severe dehydration, since these patients may be more susceptible to dystonic reactions. Most symptoms subside within a few hours and are almost always reversible within 24 to 48 hours following withdrawal of therapy. However, severe reactions such as laryngospasm may be life-threatening and require appropriate supportive therapy. Parenteral administration of an anticholinergic antiparkinsonian agent (e.g., benztropine, trihexyphenidyl) or diphenhydramine usually produces a prompt response and may be given orally for short-term maintenance to prevent recurrence of symptoms if phenothiazine therapy must be continued.

References

  1. Sheppard C, Merlis S "Drug-induced extrapyramidal symptoms: their incidence and treatment." Am J Psychiatry 123 (1967): 886-9
  2. "Product Information. Compazine (prochlorperazine)." SmithKline Beecham, Philadelphia, PA.
  3. Wood G, Waters A "Prolonged dystonic reaction to chlorpromazine in myxoedema coma." Postgrad Med J 56 (1980): 192-3
View all 31 references
Moderate

Phenothiazines (Includes Etrafon Forte) ↔ Hematologic Toxicity

Moderate Potential Hazard, Moderate plausibility

Applies to: Bone Marrow Depression/Low Blood Counts

Phenothiazines may infrequently cause hematologic toxicity, including agranulocytosis, thrombocytopenia, eosinophilia, aplastic anemia, purpura, granulocytopenia, and hemolytic anemia. Mild leukopenia may occur frequently with large doses over prolonged periods but is generally reversible despite continued treatment. Therapy with phenothiazines should be administered cautiously, if at all, in patients with preexisting blood dyscrasias or bone marrow suppression. Complete blood counts should be obtained regularly, and patients should be instructed to immediately report any signs or symptoms suggestive of blood dyscrasia such as fever, sore throat, local infection, bleeding, pallor, dizziness, or jaundice. Most cases of agranulocytosis have occurred between the fourth and tenth weeks of therapy.

References

  1. Yassa R "Agranulocytosis in the course of phenothiazine therapy." J Clin Psychiatry 46 (1985): 341-3
  2. "Product Information. Compazine (prochlorperazine)." SmithKline Beecham, Philadelphia, PA.
  3. "Product Information. Phenergan (promethazine)." Wyeth-Ayerst Laboratories, Philadelphia, PA.
View all 21 references
Moderate

Phenothiazines (Includes Etrafon Forte) ↔ Nms

Moderate Potential Hazard, Moderate plausibility

Applies to: Neuroleptic Malignant Syndrome

The central dopaminergic blocking effects of phenothiazines may precipitate or aggravate a potentially fatal symptom complex known as Neuroleptic Malignant Syndrome (NMS). NMS is observed most frequently when high-potency neuroleptic agents like haloperidol or fluphenazine are administered intramuscularly but may occur with any agent possessing neuroleptic activity given for any length of time. Clinical manifestations of NMS include hyperpyrexia, muscle rigidity, altered mental status and autonomic instability (irregular pulse or blood pressure, tachycardia, diaphoresis and cardiac arrhythmias). Phenothiazine therapy should not be initiated in patients with active NMS and should be immediately discontinued if currently being administered in such patients. In patients with a history of NMS, introduction or reintroduction of phenothiazines should be carefully considered, since NMS may recur.

References

  1. Rampertaap MP "Neuroleptic malignant syndrome." South Med J 79 (1986): 331-6
  2. "Product Information. Serentil (mesoridazine)" Boehringer-Ingelheim, Ridgefield, CT.
  3. Grunhaus L, Sancovici S, Rimon R "Neuroleptic malignant syndrome due to depot fluphenazine." J Clin Psychiatry 40 (1979): 99-100
View all 24 references
Moderate

Phenothiazines (Includes Etrafon Forte) ↔ Parkinsonism

Moderate Potential Hazard, Moderate plausibility

Applies to: Parkinsonism

The use of phenothiazines is associated with pseudo-parkinsonian symptoms such as akinesia, bradykinesia, tremors, pill-rolling motion, cogwheel rigidity, and postural abnormalities including stooped posture and shuffling gait. The onset is usually 1 to 2 weeks following initiation of therapy or an increase in dosage. Propylamino derivatives such as chlorpromazine, promazine, and triflupromazine may be more likely to induce these effects. Therapy with phenothiazines should be administered cautiously in patients with Parkinson's disease or parkinsonian symptoms.

References

  1. Schwinghammer TL, Kroboth FJ, Juhl RP "Extrapyramidal reaction secondary to oral promethazine." Clin Pharm 3 (1984): 83-5
  2. Edelstein H, Knight RT "Severe parkinsonism in two AIDS patients taking prochlorperazine." Lancet 2 (1987): 341-2
  3. Oyewumi LK, Lapierre YD, Gray R, Batth S, Gelfand R "Abnormal involuntary movements in patients on long-acting neuroleptics." Prog Neuropsychopharmacol Biol Psychiatry 7 (1983): 719-23
View all 24 references
Moderate

Phenothiazines (Includes Etrafon Forte) ↔ Renal Dysfunction

Moderate Potential Hazard, Moderate plausibility

Applies to: Renal Dysfunction

Phenothiazines and their metabolites are excreted by the kidney. There are very limited data concerning the use of phenothiazines in patients with renal disease. Therapy with phenothiazines should be administered cautiously in patients with significantly impaired renal function. The manufacturers recommend periodic renal function tests for all patients during prolonged therapy.

References

  1. Dorson P, Crismon M "Chlorpromazine accumulation and sudden death in a patient with renal insufficiency." Drug Intell Clin Pharm 22 (1988): 776-8
  2. "Product Information. Vesprin (triflupromazine)" Bristol-Myers Squibb, Princeton, NJ.
  3. "Product Information. Tacaryl (methdilazine)." Westwood Squibb Pharmaceutical Corporation, Buffalo, NY.
View all 16 references
Moderate

Phenothiazines (Includes Etrafon Forte) ↔ Respiratory Disorders

Moderate Potential Hazard, Moderate plausibility

Applies to: Asthma, Pulmonary Impairment

Phenothiazines may suppress the cough reflex. Therapy with phenothiazines should be administered cautiously in patients with chronic respiratory disorders, including severe asthma, emphysema, or acute respiratory tract infections.

References

  1. Bach N, Thung S, Schaffner F, Tobias H "Exaggerated cholestasis and hepatic fibrosis following simultaneous administration of chlorpromazine and sodium valproate." Dig Dis Sci 34 (1989): 1303-7
  2. Lok AS, Ng IO "Prochlorperazine-induced chronic cholestasis." J Hepatol 6 (1988): 369-73
  3. "Product Information. Phenergan (promethazine)." Wyeth-Ayerst Laboratories, Philadelphia, PA.
View all 24 references
Moderate

Phenothiazines (Includes Etrafon Forte) ↔ Seizure Disorders

Moderate Potential Hazard, Moderate plausibility

Applies to: CNS Disorder

Phenothiazines can lower the seizure threshold and induce seizures, particularly when dosages are high or increased rapidly and during the initiation of therapy. Of the phenothiazines used in the treatment of psychosis, chlorpromazine appears to have the greatest epileptogenic potential, while fluphenazine and thioridazine have the least. Therapy with phenothiazines should be administered cautiously in patients with a history of seizures or other factors predisposing to seizures such as abnormal EEG, preexisting CNS pathology, or head trauma. Adequate anticonvulsant therapy should be maintained during administration of phenothiazines.

References

  1. DiPiro JT, Talbert RL, Yee GC, Matzke GR, Wells BG, Posey LM "Pharmacotherapy: A Pathophysiologic Approach 4th" Stamford, CT: Appleton & Lange (1999):
  2. "Product Information. Compazine (prochlorperazine)." SmithKline Beecham, Philadelphia, PA.
  3. Markowitz J, Brown R "Seizures with neuroleptics and antidepressants." Gen Hosp Psychiatry 9 (1987): 135-41
View all 18 references
Moderate

Phenothiazines (Includes Etrafon Forte) ↔ Tardive Dyskinesia

Moderate Potential Hazard, Moderate plausibility

Applies to: Tardive Dyskinesia

Phenothiazines may commonly precipitate symptoms of tardive dyskinesia (TD), a syndrome consisting of rhythmic involuntary movements variously involving the tongue, face, mouth, lips, jaw, and/or trunk and extremities, following chronic use of at least several months but often years. Elderly patients, particularly women, are most susceptible. Also, propylpiperazine derivatives like fluphenazine, perphenazine, prochlorperazine, and trifluoperazine may be more likely to induce this syndrome. Both the risk of developing TD and the likelihood that it will become irreversible increase with the duration and total cumulative dose of phenothiazine therapy administered. However, patients may infrequently develop symptoms after relatively brief treatment periods at low dosages. If TD occurs during phenothiazine therapy, prompt withdrawal of the offending agent or at least a lowering of the dosage should be considered. TD symptoms usually become more severe after drug discontinuation or a dosage reduction, but may gradually improve over months to years. In patients with preexisting drug-induced TD, initiating or increasing the dosage of phenothiazine therapy may temporarily mask the symptoms of TD but may eventually worsen the condition. The newer, atypical neuroleptic agents (e.g., risperidone, quetiapine, olanzapine) tend to be associated with a substantially reduced risk of inducing TD and are considered the drugs of choice in patients being treated for psychosis.

References

  1. Oyewumi LK, Lapierre YD, Gray R, Batth S, Gelfand R "Abnormal involuntary movements in patients on long-acting neuroleptics." Prog Neuropsychopharmacol Biol Psychiatry 7 (1983): 719-23
  2. Schwinghammer TL, Kroboth FJ, Juhl RP "Extrapyramidal reaction secondary to oral promethazine." Clin Pharm 3 (1984): 83-5
  3. Mukherjee S, Rosen AM, Cardenas C, Varia V, Olarte S "Tardive dyskinesia in psychiatric outpatients: a study of prevalence and association with demographic, clinical, and drug history variables." Arch Gen Psychiatry 39 (1982): 466-9
View all 30 references
Moderate

Tcas (Includes Etrafon Forte) ↔ Bone Marrow Suppression

Moderate Potential Hazard, Low plausibility

Applies to: Bone Marrow Depression/Low Blood Counts

The use of tricyclic and tetracyclic antidepressants (TCAs) has rarely been associated with bone marrow suppression. Leukopenia, agranulocytosis, thrombocytopenia, anemia, eosinophilia, purpura, and pancytopenia have been reported with some TCAs. Patients with preexisting bone marrow suppression or blood dyscrasias receiving TCAs should be monitored closely during therapy for further decreases in blood counts.

References

  1. "Product Information. Sinequan (doxepin)." Roerig Division, New York, NY.
  2. Hunt KA, Resnick MP "Clomipramine-induced agranulocytosis and its treatment with G-CSF." Am J Psychiatry 150 (1993): 522-3
  3. "Product Information. Surmontil (trimipramine)" Wyeth-Ayerst Laboratories, Philadelphia, PA.
View all 16 references
Moderate

Tcas (Includes Etrafon Forte) ↔ Diabetes

Moderate Potential Hazard, Moderate plausibility

Applies to: Diabetes Mellitus

Both elevation and lowering of blood sugar levels have been reported with the use of some tricyclic antidepressants (TCAs). Rarely, these effects have also occurred with maprotiline, a tetracyclic antidepressant. Patients with diabetes should be monitored for worsening control of blood glucose when treated with these agents, particularly during dosage escalation or whenever dosage has been altered.

References

  1. "Product Information. Ludiomil (maprotiline)." Ciba-Geigy Pharmaceuticals, East Hanover, NJ.
  2. "Product Information. Surmontil (trimipramine)" Wyeth-Ayerst Laboratories, Philadelphia, PA.
  3. "Product Information. Elavil (amitriptyline)." Stuart Pharmaceuticals, Wilmington, DE.
View all 11 references
Moderate

Tcas (Includes Etrafon Forte) ↔ Renal/Liver Disease

Moderate Potential Hazard, High plausibility

Applies to: Liver Disease, Renal Dysfunction

Tricyclic and tetracyclic antidepressants (TCAs) are known to undergo metabolism in the liver. Some of the metabolites, such as those of imipramine, clomipramine and desipramine, may be pharmacologically active. Many of the metabolites are also excreted by the kidney. There are very limited data concerning the use of TCAs in patients with renal and/or liver disease. Therapy with TCAs should be administered cautiously in patients with significantly impaired renal or hepatic function. Dosage adjustments may be necessary.

References

  1. Gram LF, Andreasen PB, Overo KF, Christiansen J "Comparison of single dose kinetics of imipramine, nortriptyline and antipyrine in man." Psychopharmacology (Berl) 50 (1976): 21-7
  2. Nelson JC, Jatlow PI "Nonlinear desipramine kinetics: prevalence and importance." Clin Pharmacol Ther 41 (1987): 666-70
  3. Brosen K, Gram LF "First-pass metabolism of imipramine and desipramine: impact of the sparteine oxidation phenotype." Clin Pharmacol Ther 43 (1988): 400-6
View all 27 references
Moderate

Tcas (Includes Etrafon Forte) ↔ Schizophrenia/Bipolar Disorder

Moderate Potential Hazard, Moderate plausibility

Applies to: Schizophrenia, Bipolar Disorder, Mania

Tricyclic antidepressants (TCAs) may aggravate symptoms of psychosis in schizophrenic patients, particularly those with paranoid symptomatology. Depressed patients, usually those with bipolar disorder, may experience a switch from depression to mania or hypomania. These occurrences have also been reported rarely with the tetracyclic antidepressant, maprotiline. Therapy with these agents should be administered cautiously in patients with schizophrenia, bipolar disorder, or a history of mania.

References

  1. "Product Information. Norpramin (desipramine)." Hoechst Marion-Roussel Inc, Kansas City, MO.
  2. "Product Information. Ludiomil (maprotiline)." Ciba-Geigy Pharmaceuticals, East Hanover, NJ.
  3. Vallada HP, Gentil V "Musical hallucinations triggered by clomipramine?" Br J Psychiatry 159 (1991): 888-9
View all 24 references
Moderate

Tcas (Includes Etrafon Forte) ↔ Tardive Dyskinesia

Moderate Potential Hazard, Moderate plausibility

Applies to: Tardive Dyskinesia

Tricyclic and tetracyclic antidepressants (TCAs) have anticholinergic activity, to which elderly patients are particularly sensitive. Tertiary amines such as amitriptyline and trimipramine tend to exhibit greater anticholinergic effects than other agents in the class. As with other drugs that possess anticholinergic activity, TCAs may aggravate tardive dyskinesia or induce previously suppressed symptoms. Patients with tardive dyskinesia requiring therapy with TCAs should be monitored for exacerbation of the condition.

References

  1. "Product Information. Vivactil (protriptyline)" Merck & Co, Inc, West Point, PA.
  2. "Product Information. Pamelor (nortriptyline)." Sandoz Pharmaceuticals Corporation, East Hanover, NJ.
  3. Schatzberg AF, Cole JO, Blumer DP "Speech blockage: a tricyclic side effect." Am J Psychiatry 135 (1978): 600-1
View all 18 references
Moderate

Tricyclic Antidepressants (Includes Etrafon Forte) ↔ Acute Alcohol Intoxication

Moderate Potential Hazard, Moderate plausibility

Applies to: Alcoholism

Tricyclic antidepressants can enhance the response to alcohol. In patients who may use alcohol excessively, it should be borne in mind that the potentiation may increase the danger inherent in any suicide attempt or overdosage.

Moderate

Tricyclic Antidepressants (Includes Etrafon Forte) ↔ Bipolar Disorder Screening

Moderate Potential Hazard, Moderate plausibility

Applies to: Bipolar Disorder

A major depressive episode can be the initial presentation of bipolar disorder. Patients with depressive symptoms should be adequately screened to determine if they are at risk for bipolar disorder prior to initiating treatment with a tricyclic antidepressant. This screening should include a detailed psychiatric history, including a family history of suicide, bipolar disorder, and depression. It should be noted that tricyclic antidepressants are not approved for use in treating bipolar depression.

Moderate

Tricyclic Antidepressants (Includes Etrafon Forte) ↔ Glaucoma

Moderate Potential Hazard, Moderate plausibility

Applies to: Glaucoma (Narrow Angle), Glaucoma/Intraocular Hypertension

Tricyclic antidepressants as other type of antidepressants have an effect on pupil size causing dilation. This effect can potentially narrow the eye angle resulting in increased intraocular pressure and angle closure glaucoma, especially in predisposed patients. These drugs should be used with caution in patients with anatomically narrow angle or history of glaucoma. Doxepin hydrochloride capsules are contraindicated in patients with glaucoma.

Moderate

Tricyclic Antidepressants (Includes Etrafon Forte) ↔ Hyper/Hypoglycemia

Moderate Potential Hazard, Moderate plausibility

Applies to: Diabetes Mellitus, Hypoglycemia

There have been reports of both elevation and lowering of blood sugar levels in patients receiving tricyclic antidepressants. These drugs should be used with caution in patients with hypoglycemia, hyperglycemia or diabetes. Monitoring sugar levels is recommended.

Moderate

Tricyclic Antidepressants (Includes Etrafon Forte) ↔ Liver/Renal Disease

Moderate Potential Hazard, Moderate plausibility

Applies to: Renal Dysfunction, Liver Disease

In general, tricyclic antidepressants should be used with caution in patients with liver or renal disease, as these drugs are metabolized and excreted through the liver and kidneys. Dose selection, especially in the elderly patients that might have liver or renal dysfunction, should usually be limited to the smallest effective total daily dose. Some tricyclic antidepressants such as clomipramine and nortriptyline have occasionally been associated with elevations in SGOT (AST) and SGPT (ALT), and other hepatic adverse events such as jaundice. Although serious liver injury has only been reported rarely, therapy with these drugs should be administered cautiously in patients with preexisting liver disease and periodic monitoring of liver enzyme levels is recommended.

References

  1. Larrey D, Rueff B, Pessayre D, Danan G, Algard M, Geneve J, Benhamou JP "Cross hepatotoxicity between tricyclic antidepressants." Gut 27 (1986): 726-7
  2. "Product Information. Anafranil (clomipramine)." Basel Pharmaceuticals, Summit, NJ.
Moderate

Tricyclic Antidepressants (Includes Etrafon Forte) ↔ Neutropenia

Moderate Potential Hazard, Moderate plausibility

Applies to: Neutropenia

The use of some tricyclic antidepressants has been associated with neutropenia (ANC < 500/mm3) and agranulocytosis (ANC < 500/mm3). Leukocyte and differential blood counts should be performed in patients that develop fever and sore throat during treatment. Therapy should be discontinued if there is evidence of pathologic neutrophil depression.

Moderate

Tricyclic Antidepressants (Includes Etrafon Forte) ↔ Schizophrenia

Moderate Potential Hazard, Moderate plausibility

Applies to: Schizophrenia

Some tricyclic antidepressants have shown to cause activation or exacerbation of psychosis in schizophrenic patients. A dosage reduction might be required.

Moderate

Tricyclic Antidepressants (Includes Etrafon Forte) ↔ Thyroid Disorders

Moderate Potential Hazard, Moderate plausibility

Applies to: Hyperthyroidism

Most tricyclic antidepressants should be administered with caution in hyperthyroid patients or those receiving thyroid medication as they may develop arrhythmias when these drugs are given.

Moderate

Tricyclic Antidepressants (Includes Etrafon Forte) ↔ Urinary Retention

Moderate Potential Hazard, Moderate plausibility

Applies to: Urinary Retention

Due to their anticholinergic properties, tricyclic antidepressants should be administered with caution in patients with history of urinary retention. Particularly doxepin hydrochloride capsules are contraindicated in patients with tendency to urinary retention.

Etrafon Forte (amitriptyline / perphenazine) drug Interactions

There are 1216 drug interactions with Etrafon Forte (amitriptyline / perphenazine)

Etrafon Forte (amitriptyline / perphenazine) alcohol/food Interactions

There is 1 alcohol/food interaction with Etrafon Forte (amitriptyline / perphenazine)

Drug Interaction Classification

The classifications below are a general guideline only. It is difficult to determine the relevance of a particular drug interaction to any individual given the large number of variables.

Major Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit.
Moderate Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.
Minor Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan.

Do not stop taking any medications without consulting your healthcare provider.

Disclaimer: Every effort has been made to ensure that the information provided by Multum is accurate, up-to-date and complete, but no guarantee is made to that effect. In addition, the drug information contained herein may be time sensitive and should not be utilized as a reference resource beyond the date hereof. This material does not endorse drugs, diagnose patients, or recommend therapy. Multum's information is a reference resource designed as supplement to, and not a substitute for, the expertise, skill, knowledge, and judgement of healthcare practitioners in patient care. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate that the drug or combination is safe, effective, or appropriate for any given patient. Multum Information Services, Inc. does not assume any responsibility for any aspect of healthcare administered with the aid of information Multum provides. Copyright 2000-2016 Multum Information Services, Inc. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the drugs you are taking, check with your doctor, nurse, or pharmacist.

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