7 Interactions found for:
Drug Interactions
Major
Trazodone
+ Celexa
The following applies to the ingredients: Trazodone and Citalopram (found in Celexa)
GENERALLY AVOID: Citalopram can cause dose-dependent prolongation of the QT interval. Theoretically, coadministration with other agents that can prolong the QT interval including tricyclic antidepressants and other antidepressants (e.g., trazodone) may result in additive effects and increased risk of ventricular arrhythmias such as torsade de pointes and sudden death. In a randomized, double-blind, crossover, escalating multiple-dose study consisting of 119 healthy subjects, the maximum mean increase in corrected QT interval from placebo was 8.5 msec for citalopram 20 mg and 18.5 msec for citalopram 60 mg. Based on the established exposure-response relationship, prolongation of the corrected QT interval was estimated to be 12.6 ms for citalopram 40 mg. Cases of QT interval prolongation and torsade de pointes have been reported during postmarketing use. In general, the risk of an individual agent or a combination of agents causing ventricular arrhythmia in association with QT prolongation is largely unpredictable but may be increased by certain underlying risk factors such as congenital long QT syndrome, cardiac disease, and electrolyte disturbances (e.g., hypokalemia, hypomagnesemia). In addition, the extent of drug-induced QT prolongation is dependent on the particular drug(s) involved and dosage(s) of the drug(s).
MANAGEMENT: The use of citalopram is not recommended in patients receiving other drugs that prolong the QT interval. Citalopram is also not recommended in patients with congenital long QT syndrome, bradycardia, hypokalemia, hypomagnesemia, recent acute myocardial infarction, or uncompensated heart failure. However, if treatment with citalopram is required in these patients, the labeling recommends that the dosage not exceed 40 mg/day, as higher dosages may have an excessive effect on the QT interval and confer no additional benefit in the treatment of depression. A maximum dosage of 20 mg/day is recommended for patients with hepatic impairment, those greater than 60 years of age, and poor metabolizers of CYP450 2C19. Patients at risk for significant electrolyte disturbances should have serum potassium and magnesium assessed at baseline and periodically during treatment. If hypokalemia or hypomagnesemia is found, it should be corrected prior to initiation of treatment. Regular ECG monitoring is also recommended, and persistent QTc measurements greater than 500 msec should prompt discontinuation of the medication. Patients should be advised to seek prompt medical attention if they experience symptoms that could indicate the occurrence of torsade de pointes such as dizziness, lightheadedness, fainting, palpitation, irregular heart rhythm, shortness of breath, or syncope.
MONITOR CLOSELY: Concomitant use of agents with serotonergic activity including selective serotonin reuptake inhibitors, tricyclic antidepressants, and other antidepressants may potentiate the risk of serotonin syndrome, which is a rare but serious and potentially fatal condition thought to result from hyperstimulation of brainstem 5-HT1A and 2A receptors. Symptoms of the serotonin syndrome may include mental status changes such as irritability, altered consciousness, confusion, hallucination, and coma; autonomic dysfunction such as tachycardia, hyperthermia, diaphoresis, shivering, blood pressure lability, and mydriasis; neuromuscular abnormalities such as hyperreflexia, myoclonus, tremor, rigidity, and ataxia; and gastrointestinal symptoms such as abdominal cramping, nausea, vomiting, and diarrhea.
MANAGEMENT: In general, the concomitant use of multiple serotonergic agents should be avoided if possible, or otherwise approached with caution if potential benefit is deemed to outweigh the risk. Patients should be closely monitored for symptoms of the serotonin syndrome during treatment. Particular caution is advised when increasing the dosages of these agents. If serotonin syndrome develops or is suspected during the course of therapy, all serotonergic agents should be discontinued immediately and supportive care rendered as necessary. Moderately ill patients may also benefit from the administration of a serotonin antagonist (e.g., cyproheptadine, chlorpromazine). Severe cases should be managed under consultation with a toxicologist and may require sedation, neuromuscular paralysis, intubation, and mechanical ventilation in addition to the other measures.
References
- Nierenberg DW, Semprebon M "The central nervous system serotonin syndrome." Clin Pharmacol Ther 53 (1993): 84-8
- Sternbach H "The serotonin syndrome." Am J Psychiatry 148 (1991): 705-13
- Insel TR, Roy BF, Cohen RM, Murphy DL "Possible development of the serotonin syndrome in man." Am J Psychiatry 139 (1982): 954-5
- Harvey AT, Preskorn SH "Interactions of serotonin reuptake inhibitors with tricyclic antidepressants." Arch Gen Psychiatry 52 (1995): 783-4
- Fischer P "Serotonin syndrome in the elderly after antidepressive monotherapy." J Clin Psychopharmacol 15 (1995): 440-2
- Corkeron MA "Serotonin syndrome - a potentially fatal complication of antidepressant therapy." Med J Aust 163 (1995): 481-2
- Mills KC "Serotonin syndrome: A clinical update." Crit Care Clin 13 (1997): 763
- "Product Information. Celexa (citalopram)." Forest Pharmaceuticals PROD (2001):
- Chan BSH, Graudins A, Whyte IM, Dawson AH, Braitberg G, Duggin GG "Serotonin syndrome resulting from drug interactions." Med J Aust 169 (1998): 523-5
- Nijhawan PK, Katz G, Winter S "Psychiatric illness and the serotonin syndrome: an emerging adverse drug effect leading to intensive care unit admission." Crit Care Med 24 (1996): 1086-9
- Laird LK "Issues in the monopharmacotherapy and polypharmacotherapy of obsessive-compulsive disorder." Psychopharmacol Bull 32 (1996): 569-78
- Martin TG "Serotonin syndrome." Ann Emerg Med 28 (1996): 520-6
- Lane R, Baldwin D "Selective serotonin reuptake inhibitor--induced serotonin syndrome: review." J Clin Psychopharmacol 17 (1997): 208-21
- FDA. U.S. Food and Drug Administration "FDA Drug Safety Communication: Abnormal heart rhythms associated with high doses of Celexa (citalopram hydrobromide). http://www.fda.gov/Drugs/DrugSafety/ucm269086.htm" (2011):
Drug and Food Interactions
Moderate
Trazodone
+ Food
The following applies to the ingredients: Trazodone
GENERALLY AVOID: Alcohol may potentiate some of the pharmacologic effects of CNS-active agents. Use in combination may result in additive central nervous system depression and/or impairment of judgment, thinking, and psychomotor skills.
MANAGEMENT: Patients receiving CNS-active agents should be warned of this interaction and advised to avoid or limit consumption of alcohol. Ambulatory patients should be counseled to avoid hazardous activities requiring complete mental alertness and motor coordination until they know how these agents affect them, and to notify their physician if they experience excessive or prolonged CNS effects that interfere with their normal activities.
References
- Warrington SJ, Ankier SI, Turner P "Evaluation of possible interactions between ethanol and trazodone or amitriptyline." Neuropsychobiology 15 (1986): 31-7
- Gilman AG, eds., Nies AS, Rall TW, Taylor P "Goodman and Gilman's the Pharmacological Basis of Therapeutics." New York, NY: Pergamon Press Inc. (1990):
- "Product Information. Fycompa (perampanel)." Eisai Inc (2012):
- "Product Information. Rexulti (brexpiprazole)." Otsuka American Pharmaceuticals Inc (2015):
Moderate
Celexa
+ Food
The following applies to the ingredients: Citalopram (found in Celexa)
GENERALLY AVOID: Alcohol may potentiate some of the pharmacologic effects of CNS-active agents. Use in combination may result in additive central nervous system depression and/or impairment of judgment, thinking, and psychomotor skills.
MANAGEMENT: Patients receiving CNS-active agents should be warned of this interaction and advised to avoid or limit consumption of alcohol. Ambulatory patients should be counseled to avoid hazardous activities requiring complete mental alertness and motor coordination until they know how these agents affect them, and to notify their physician if they experience excessive or prolonged CNS effects that interfere with their normal activities.
References
- Warrington SJ, Ankier SI, Turner P "Evaluation of possible interactions between ethanol and trazodone or amitriptyline." Neuropsychobiology 15 (1986): 31-7
- Gilman AG, eds., Nies AS, Rall TW, Taylor P "Goodman and Gilman's the Pharmacological Basis of Therapeutics." New York, NY: Pergamon Press Inc. (1990):
- "Product Information. Fycompa (perampanel)." Eisai Inc (2012):
- "Product Information. Rexulti (brexpiprazole)." Otsuka American Pharmaceuticals Inc (2015):
Drug and Pregnancy Interactions
Major
Trazodone
+ Pregnancy
The following applies to the ingredients: Trazodone
This drug should be used during pregnancy only if the benefit outweighs the risk to the fetus.
-Some experts recommend: Use with caution; use should be avoided during the first trimester of pregnancy.
US FDA pregnancy category: C
Comment: When this drug is used until delivery, newborns should be monitored for the occurrence of withdrawal symptoms.
Animal studies have revealed evidence of increased fetal resorption and congenital anomalies in adolescents. Other animal models have failed to reveal evidence of adverse effects on embryofetal development, parturition, or postnatal development when given at therapeutic doses. There are no controlled data in human pregnancy.
US FDA pregnancy category C: Animal reproduction studies have shown an adverse effect on the fetus and there are no adequate and well-controlled studies in humans, but potential benefits may warrant use of the drug in pregnant women despite potential risks.
References
- "Product Information. Desyrel (trazodone)." Bristol-Myers Squibb PROD (2001):
- Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0
Major
Celexa
+ Pregnancy
The following applies to the ingredients: Citalopram (found in Celexa)
This drug should be used during pregnancy only if the benefit outweighs the risk to the fetus.
AU TGA Pregnancy Category: C
US FDA Pregnancy Category: C
Comments:
-Newborns should be monitored if the maternal use of this drug continues into the later stages of pregnancy, particularly the third trimester.
-Abrupt discontinuation should be avoided during pregnancy.
Animal studies have revealed evidence of embryofetal toxicity and effects on postnatal development, including teratogenicity, at doses greater than human therapeutic doses, which were also maternally toxic. There are no controlled data in human pregnancy.
Published data on pregnant women, with more than 2,500 exposed outcomes, indicate no malformative feto/neonatal toxicity. The results of a prospective comparative study (n=396 pregnant women) indicate that citalopram use during embryogenesis is not associated with an apparent major teratogenic risk in humans; however, human spontaneous abortion has been reported.
Neonates exposed to SSRIs and SNRIs late in the third trimester have uncommonly reported clinical findings including respiratory distress, cyanosis, apnea, seizures, temperature instability, feeding difficulty, vomiting, hypoglycemia, hypotonia, hypertonia, hyperreflexia, tremor, jitteriness, irritability, and constant crying. These effects have mostly occurred either at birth or within a few days of birth. These features are consistent with either a direct toxic effect of SSRIs and SNRIs, or possibly a drug discontinuation syndrome; in some cases, the clinical picture is consistent with serotonin syndrome.
Epidemiological data have suggested that the use of SSRIs, particularly in late pregnancy, may increase the risk of persistent pulmonary hypertension in the newborn. Data are not available for SNRIs.
Data from animal studies has shown that citalopram may affect sperm quality. Human case reports from some SSRIs have shown this effect to be reversible. As yet, the impact of this on human fertility has not been observed.
AU TGA Pregnancy Category C: Drugs which, owing to their pharmacological effects, have caused or may be suspected of causing, harmful effects on the human fetus or neonate without causing malformations. These effects may be reversible. Accompanying texts should be consulted for further details.
US FDA Pregnancy Category C: Animal reproduction studies have shown an adverse effect on the fetus and there are no adequate and well-controlled studies in humans, but potential benefits may warrant use of the drug in pregnant women despite potential risks.
References
- "Product Information. Celexa (citalopram)." Forest Pharmaceuticals PROD (2001):
- Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0
- Cerner Multum, Inc. "Australian Product Information." O 0
Drug and Breastfeeding Interactions
Major
Trazodone
+ Breastfeeding
The following applies to the ingredients: Trazodone
A decision should be made to discontinue breastfeeding or discontinue the drug, taking into account the importance of the drug to the mother.
-Some experts recommend: Caution is recommended.
Excreted into human milk: Yes
Comments:
-The effects in the nursing infant are unknown.
-The American Academy of Pediatrics considers this agent a drug for which the effect on nursing infants is unknown but may be of concern.
References
- "Product Information. Desyrel (trazodone)." Bristol-Myers Squibb PROD (2001):
- Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0
- Briggs GG, Freeman RK. "Drugs in Pregnancy and Lactation." Philadelphia, PA: Wolters Kluwer Health (2015):
Major
Celexa
+ Breastfeeding
The following applies to the ingredients: Citalopram (found in Celexa)
A decision should be made to discontinue nursing or discontinue the drug, taking into account the importance of the drug to the mother.
Excreted into human milk: Yes
Comments:
-Breastfed infants should be monitored for drowsiness
-Mothers taking an SSRI during pregnancy and postpartum may have difficulty breastfeeding and may require additional breastfeeding support.
Cases of minor behavioral side effects such as drowsiness or fussiness have been reported; however no adverse effects on development have been observed in infants followed for up to 1 year.
It has been suggested that citalopram therapy may be continued during breastfeeding if it was used during pregnancy or if other antidepressants were ineffective. Escitalopram, the S-enantiomer of citalopram, may be preferred during breastfeeding as its usual dose is about 25% that of citalopram and has a lower infant exposure.
One study has reported that the relative dose to a suckling infant is similar to that reported for fluoxetine, and higher than that reported for fluvoxamine, paroxetine, or sertraline.
Two cases have been reported of infants experiencing excessive somnolence, decreased feeding, and weight loss in relation to breast-feeding from a mother receiving citalopram. Milk/serum concentration ratios based on single pairs of samples from the two patients ranged from 1.16 to 1.88. Based on this, the absolute dose a suckling infant may ingest would be in the range of 4.3 to 17.6 micrograms/kg. The relative dose would be 0.7% to 5.9% of the weight- adjusted maternal dose. In one case the infant was reported to have recovered completely once the infants mother discontinued the citalopram.
According to another case report, the relative infant citalopram dose from breast milk is approximately 9% of the weight- adjusted maternal dose.
A study of seven women taking citalopram and their infants has reported that the plasma concentrations of citalopram and demethylcitalopram in the infants were very low or absent and there were no adverse effects.
References
- "Product Information. Celexa (citalopram)." Forest Pharmaceuticals PROD (2001):
- Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0
- Cerner Multum, Inc. "Australian Product Information." O 0
Therapeutic Duplication Warnings
No warnings were found for your selected drugs.Therapeutic duplication warnings are only returned when drugs within the same group exceed the recommended therapeutic duplication maximum.
Switch to: Consumer Interactions
| Drug Interaction Classification | |
|---|---|
These classifications are only a guideline. The relevance of a particular drug interaction to a specific individual is difficult to determine. Always consult your healthcare provider before starting or stopping any medication. |
|
| 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. |
| Unknown | No interaction information available. |
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