Drug Interaction Report
1 drug interaction and 21 additional warnings found for the following 2 drugs:
- Cymbalta (duloxetine)
- Lamisil (terbinafine)
Drug interactions
Moderate drug interactions
Moderate:terbinafine DULoxetine
Applies to: Lamisil (terbinafine), Cymbalta (duloxetine)
Terbinafine may increase the blood levels and effects of DULoxetine.
You may need a dose adjustment or more frequent monitoring by your doctor to safely use both medications.
Let your doctor know if your condition changes or you experience increased side effects of DULoxetine such as:
- nausea
- dry mouth
- insomnia
- drowsiness
- constipation
- any unusual symptoms
If you have high blood pressure, you may need closer monitoring of your blood pressure while you are receiving these medications.
You should also avoid activities requiring mental alertness such as driving or operating machinery until you know how these medications affect you.
It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.
Food/lifestyle interactions
Moderate food/lifestyle interactions
Moderate:Food/Lifestyle DULoxetine
Applies to: Cymbalta (duloxetine)
DULoxetine may cause liver damage, and taking it with alcohol may increase that risk.
You should avoid or limit the use of alcohol while being treated with DULoxetine.
Call your doctor immediately if you have:
- fever
- chills
- joint pain or swelling
- excessive tiredness or weakness
- unusual bleeding or bruising
- skin rash or itching
- loss of appetite
- nausea
- vomiting
- dark colored urine
- yellowing of the skin or the whites of your eyes
These may be symptoms of liver damage.
It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.
Disease interactions
20 potential interactionsApplies to: 16 conditions, including High Blood Pressure, Depression, Bipolar Disorder, Urinary Tract Infection, and Seizures.
Bipolar Disorder
Major:Cymbalta
The DULoxetine in Cymbalta has a major potential interaction with Bipolar Disorder.
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. 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.
Moderate:Cymbalta
The DULoxetine in Cymbalta has a moderate potential interaction with Bipolar Disorder.
Therapy with SNRI antidepressants can cause activation of mania and hypomania and should be used with caution in patients with personal or family history of mania, hypomania, bipolar disorder, and other mood disorders.
Dehydration
Moderate:Cymbalta
The DULoxetine in Cymbalta has a moderate potential interaction with Dehydration.
Treatment with SNRI antidepressants can cause hyponatremia. Caution should be used when treating patients with hyponatremia or at greater risk of hyponatremia such as the elderly, patients taking diuretics or who are volume depleted.
Depression
Major:Cymbalta
The DULoxetine in Cymbalta has a major potential interaction with Depression.
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. 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.
Moderate:Lamisil
The terbinafine in Lamisil has a moderate potential interaction with Depression.
Postmarketing studies have reported depressive symptoms with the use of terbinafine tablets. Terbinafine should be used with caution in patients with depression, and prescribers should be alert to the development of depressive symptoms. Patients and caregivers should be instructed to report any depressive symptoms.
Diabetes Mellitus
Moderate:Cymbalta
The DULoxetine in Cymbalta has a moderate potential interaction with Diabetes Mellitus.
In clinical trials, treatment with duloxetine delayed-release worsened the glycemic control in some patients with diabetes. Caution should be used when using duloxetine in diabetic patients and their glycemic levels should be checked regularly.
Glaucoma, Narrow Angle
Moderate:Cymbalta
The DULoxetine in Cymbalta has a moderate potential interaction with Glaucoma, Narrow Angle.
SNRI antidepressants cause pupillary dilation that may trigger an angle closure attack in patients with anatomically narrow angle without iridectomy.
High Blood Pressure
Moderate:Cymbalta
The DULoxetine in Cymbalta has a moderate potential interaction with High Blood Pressure.
Selective serotonin and norepinephrine reuptake inhibitor antidepressants (SNRIs) have been associated with sustained increases in blood pressure. Therapy with SNRI antidepressants should be administered cautiously in patients with preexisting hypertension. Blood pressure should be assessed prior to initiating treatment and monitored regularly. The dose should be reduced or discontinued if necessary.
Hyponatremia
Moderate:Cymbalta
The DULoxetine in Cymbalta has a moderate potential interaction with Hyponatremia.
Treatment with SNRI antidepressants can cause hyponatremia. Caution should be used when treating patients with hyponatremia or at greater risk of hyponatremia such as the elderly, patients taking diuretics or who are volume depleted.
Immunodeficiency
Moderate:Lamisil
The terbinafine in Lamisil has a moderate potential interaction with Immunodeficiency.
Transient decreases in absolute lymphocyte counts have been reported with oral terbinafine during clinical trials. The clinical significance of these decreases is unknown. Monitoring of complete blood counts may be appropriate in patients with known or suspected immunodeficiency receiving terbinafine for greater than six weeks.
Liver Disease
Major:Cymbalta
The DULoxetine in Cymbalta has a major potential interaction with Liver Disease.
Postmarketing studies have reported that duloxetine and some other SNRIs like milnacipran may aggravate preexisting liver disease. The use of duloxetine delayed-release and milnacipran should be avoided in patients with chronic liver disease or cirrhosis.
Major:Lamisil
The terbinafine in Lamisil has a major potential interaction with Liver Disease.
Oral terbinafine is not recommended for use in patients with chronic or active liver disease. Terbinafine may be hepatotoxic. Rare cases of cholestatic hepatitis and liver failure, some resulting in liver transplant or death, have been reported during treatment of various dermatologic conditions in patients with and without preexisting liver disease. Although a causal relationship has not been established, the severity of hepatic events and/or their outcome may be worse in patients with active or chronic liver disease.
Lupus Erythematosus
Moderate:Lamisil
The terbinafine in Lamisil has a moderate potential interaction with Lupus Erythematosus.
Precipitation and exacerbation of cutaneous and systemic lupus erythematosus has been reported postmarketing in patients taking terbinafine tablets. Terbinafine should be discontinued in patients with any clinical signs and symptoms suggestive of lupus erythematosus.
Mania
Moderate:Cymbalta
The DULoxetine in Cymbalta has a moderate potential interaction with Mania.
Therapy with SNRI antidepressants can cause activation of mania and hypomania and should be used with caution in patients with personal or family history of mania, hypomania, bipolar disorder, and other mood disorders.
Neutropenia
Major:Lamisil
The terbinafine in Lamisil has a major potential interaction with Neutropenia.
Isolated cases of severe neutropenia have been reported in patients administered oral terbinafine. A causal relationship has not been established, although the neutropenia resolved following discontinuation of terbinafine with or without supportive care. Therapy with terbinafine should be administered cautiously in patients with preexisting neutropenia. It may be appropriate to monitor blood counts more frequently during terbinafine therapy. If secondary infection occurs and the neutrophil count is <= 1000 cells/mm3, terbinafine should be discontinued and supportive management initiated.
Renal Dysfunction
Major:Cymbalta
The DULoxetine in Cymbalta has a major potential interaction with Renal Dysfunction.
The use of duloxetine should be avoided in patients with severe renal impairment (GFR <30 mL/min).
Moderate:Lamisil
The terbinafine in Lamisil has a moderate potential interaction with Renal Dysfunction.
The use of oral terbinafine in patients with renal impairment (CrCl <= 50 mL/min) has not been adequately studied and is, therefore, not recommended. Terbinafine metabolites are primarily eliminated by the kidney. The clinical significance of possible metabolite accumulation due to decreased clearance is unknown.
Seizures
Moderate:Cymbalta
The DULoxetine in Cymbalta has a moderate potential interaction with Seizures.
SNRI antidepressants may trigger seizures and should be administered with caution in patients with a seizure disorder.
Urinary Tract Infection
Moderate:Cymbalta
The DULoxetine in Cymbalta has a moderate potential interaction with Urinary Tract Infection.
SNRI antidepressants have a noradrenergic effect and can affect urethral resistance. Caution should be used in patients with a history of dysuria, prostatic hypertrophy, prostatitis, and other lower urinary tract obstructive disorders.
Urinary Tract Obstruction
Moderate:Cymbalta
The DULoxetine in Cymbalta has a moderate potential interaction with Urinary Tract Obstruction.
SNRI antidepressants have a noradrenergic effect and can affect urethral resistance. Caution should be used in patients with a history of dysuria, prostatic hypertrophy, prostatitis, and other lower urinary tract obstructive disorders.
Drug Interaction Classification
| Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit. | |
| Moderately clinically significant. Usually avoid combinations; use it only under special circumstances. | |
| 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. | |
| No interaction information available. |
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