Skip to main content

Interactions between Dalalone LA and Ivacaftor

1 drug interaction and 51 additional warnings found for the following 2 drugs:

Add/remove drugs

Drug interactions

Moderate drug interactions

Moderate:

dexAMETHasone ivacaftor

Applies to: Dalalone LA (dexamethasone) and ivacaftor
Monitor

Coadministration with inducers of CYP450 3A4 may decrease the plasma concentrations of ivacaftor, which is primarily metabolized by the isoenzyme. In study subjects, administration of a single 150 mg dose of ivacaftor with the potent CYP450 3A4 inducer rifampin (600 mg once daily) decreased ivacaftor peak plasma concentration (Cmax) and systemic exposure (AUC) by 80% and 89%, respectively, compared to administration of ivacaftor alone. When lumacaftor/ivacaftor was coadministered with rifampin, lumacaftor pharmacokinetics were minimally affected, but ivacaftor Cmax and AUC decreased by an average of 50% and 57%, respectively. No pharmacokinetic data are available for elexacaftor or tezacaftor, but decreased exposures are expected according to prescribing information.

Management

The potential for diminished pharmacologic effects of ivacaftor-containing medications should be considered during coadministration with CYP450 3A4 inducers. Alternative treatments may be required if an interaction is suspected.

References (5)
  1. (2012) "Product Information. Kalydeco (ivacaftor)." Vertex Pharmaceuticals
  2. (2015) "Product Information. Orkambi (ivacaftor-lumacaftor)." Vertex Pharmaceuticals
  3. (2022) "Product Information. Symdeko (ivacaftor-tezacaftor)." Vertex Pharmaceuticals
  4. (2019) "Product Information. Trikafta (elexacaftor/ivacaftor/tezacaftor)." Vertex Pharmaceuticals
  5. (2023) "Product Information. Kalydeco (ivacaftor)." Vertex Pharmaceuticals, SUPPL-40

Food/lifestyle interactions

Moderate food/lifestyle interactions

Moderate:

dexAMETHasone Food/Lifestyle

Applies to: Dalalone LA (dexamethasone)
Monitor

Concomitant use of systemic corticosteroids (e.g., prednisolone) with alcohol or products containing alcohol may increase gastrointestinal irritation and the risk of ulceration and bleeding. The proposed mechanism has not been fully elucidated but may involve additive mucosal irritation.

Monitor

Coadministration with grapefruit or grapefruit juice may increase the plasma concentrations of systemic corticosteroids. The proposed mechanism is inhibition of CYP450 3A4-mediated first-pass metabolism in the gut wall by certain compounds present in grapefruit. In general, the effect of grapefruit juice is concentration-, dose- and preparation-dependent, and can vary widely among brands. Certain preparations of grapefruit juice (e.g., high dose, double strength) have sometimes demonstrated potent inhibition of CYP450 3A4, while other preparations (e.g., low dose, single strength) have typically demonstrated moderate inhibition. Pharmacokinetic interactions involving grapefruit juice are also subject to a high degree of interpatient variability, thus the extent to which a given patient may be affected is difficult to predict.

Management

Caution is advised if corticosteroids and alcohol are used together, especially in patients with a prior history of peptic ulcer disease or gastrointestinal bleeding. Patients should be advised to report signs and symptoms of gastrointestinal ulceration and/or bleeding such as severe abdominal pain, dizziness, lightheadedness, and the appearance of black, tarry stools. Patients who regularly consume grapefruit or grapefruit juice should be monitored for adverse effects and for changes in corticosteroid plasma concentrations.

References (5)
  1. (2024) "Product Information. PrednisoLONE Sodium Phosphate (prednisoLONE)." Chartwell RX, LLC., 2
  2. (2025) "Product Information. Andriga-10 (abiraterone-prednisolone)." Actor Pharmaceuticals Pty Ltd
  3. (2023) "Product Information. Pediapred (prednisolone)." Sanofi-Aventis Canada Inc
  4. (2021) "Product Information. Redipred (prednisolone)." Aspen Pharmacare Australia Pty Ltd
  5. (2023) "Product Information. Prednisolone Sodium Phosphate (prednisolone)." Advanz Pharma
Moderate:

ivacaftor Food/Lifestyle

Applies to: ivacaftor
Generally avoid

Grapefruit juice may increase the plasma concentrations of ivacaftor. The proposed mechanism is inhibition of CYP450 3A4-mediated first-pass metabolism in the gut wall by certain compounds present in grapefruit. Elexacaftor and tezacaftor are also CYP450 3A4 substrates in vitro and may interact similarly with grapefruit juice, whereas lumacaftor is not expected to interact.

Adjust dosing interval

According to prescribing information, systemic exposure to ivacaftor increased approximately 2.5- to 4-fold, systemic exposure to elexacaftor increased approximately 1.9- to 2.5-fold, and systemic exposure to lumacaftor increased approximately 2-fold following administration with fat-containing foods relative to administration in a fasting state. Tezacaftor exposure is not significantly affected by administration of fat-containing foods.

Management

Patients treated with ivacaftor-containing medications should avoid consumption of grapefruit juice and any food that contains grapefruit or Seville oranges. All ivacaftor-containing medications should be administered with fat-containing foods such as eggs, avocados, nuts, meat, butter, peanut butter, cheese pizza, and whole-milk dairy products. A typical cystic fibrosis diet will satisfy this requirement.

References (4)
  1. (2012) "Product Information. Kalydeco (ivacaftor)." Vertex Pharmaceuticals
  2. (2015) "Product Information. Orkambi (ivacaftor-lumacaftor)." Vertex Pharmaceuticals
  3. (2022) "Product Information. Symdeko (ivacaftor-tezacaftor)." Vertex Pharmaceuticals
  4. (2019) "Product Information. Trikafta (elexacaftor/ivacaftor/tezacaftor)." Vertex Pharmaceuticals

Disease interactions

49 potential interactions Applies to: 45 conditions, including High Blood Pressure, High Cholesterol, Depression, Underactive Thyroid, and Heart Failure.

Abnormal Glucose Tolerance

Moderate:

Dalalone LA

The dexAMETHasone in Dalalone LA has a moderate potential interaction with Abnormal Glucose Tolerance.

Corticosteroids can raise blood glucose level by antagonizing the action and suppressing the secretion of insulin, which results in inhibition of peripheral glucose uptake and increased gluconeogenesis. Therapy with corticosteroids should be administered cautiously in patients with diabetes mellitus, glucose intolerance, or a predisposition to hyperglycemia. Patients with diabetes mellitus should be monitored more closely during corticosteroid therapy, and their antidiabetic regimen adjusted accordingly.

Adrenal Tumor

Moderate:

Dalalone LA

The dexAMETHasone in Dalalone LA has a moderate potential interaction with Adrenal Tumor.

Corticosteroids mimic the effects of endogenous cortisol and aldosterone. Use of these agents may aggravate conditions of hyperadrenocorticalism in a dose-dependent manner.

Cataract

Moderate:

Dalalone LA

The dexAMETHasone in Dalalone LA has a moderate potential interaction with Cataract.

Prolonged use of corticosteroids may cause posterior subcapsular cataracts and elevated intraocular pressure, the latter of which may lead to glaucoma and/or damage to the optic nerves. Long-term therapy with corticosteroids should be administered cautiously in patients with a history of cataracts, glaucoma, or increased intraocular pressure.

Moderate:

ivacaftor

Ivacaftor has a moderate potential interaction with Cataract.

Cases of non-congenital lens opacities or cataracts have been reported in pediatric patients treated with products containing ivacaftor. Although other risk factors could be present in some cases (e.g., corticosteroid use or exposure to radiation), a possible risk attributable to this medication cannot be excluded. Baseline and ophthalmological examinations are recommended in pediatric patients initiating treatment

Cirrhosis

Moderate:

Dalalone LA

The dexAMETHasone in Dalalone LA has a moderate potential interaction with Cirrhosis.

Corticosteroids may have enhanced effects on patients with cirrhosis due to decreased metabolism of these agents. Patients with cirrhosis should be monitored more closely for excessive cortisol effects. Dosage adjustments may be required in these patients.

Depression

Moderate:

Dalalone LA

The dexAMETHasone in Dalalone LA has a moderate potential interaction with Depression.

Corticosteroids may aggravate the symptoms of psychosis and emotional instability. Patients with these conditions should be monitored for increased or worsened symptoms during corticosteroid therapy.

Diabetes Mellitus

Moderate:

Dalalone LA

The dexAMETHasone in Dalalone LA has a moderate potential interaction with Diabetes Mellitus.

Corticosteroids can raise blood glucose level by antagonizing the action and suppressing the secretion of insulin, which results in inhibition of peripheral glucose uptake and increased gluconeogenesis. Therapy with corticosteroids should be administered cautiously in patients with diabetes mellitus, glucose intolerance, or a predisposition to hyperglycemia. Patients with diabetes mellitus should be monitored more closely during corticosteroid therapy, and their antidiabetic regimen adjusted accordingly.

Diverticulitis

Moderate:

Dalalone LA

The dexAMETHasone in Dalalone LA has a moderate potential interaction with Diverticulitis.

Corticosteroids may cause gastrointestinal perforation and hemorrhage, usually when given in high dosages or for prolonged periods. They may also mask symptoms of complications such as peritonitis or intraabdominal sepsis. Therapy with corticosteroids should be avoided or administered cautiously in patients with diverticulitis, nonspecific ulcerative colitis (if there is a probability of impending perforation, abscess, or other pyogenic infection), or recent intestinal anastomoses.

Electrolyte Abnormalities

Moderate:

Dalalone LA

The dexAMETHasone in Dalalone LA has a moderate potential interaction with Electrolyte Abnormalities.

Corticosteroids can cause hypernatremia, hypokalemia, and fluid retention. These mineralocorticoid effects are most significant with fludrocortisone, followed by hydrocortisone and cortisone, then by prednisone and prednisolone. The remaining corticosteroids, betamethasone, dexamethasone, methylprednisolone, and triamcinolone, have little mineralocorticoid activities. However, large doses of any corticosteroid can demonstrate these effects, particularly if given for longer than brief periods. All corticosteroids also increase excretion of calcium and can cause hypocalcemia. Therapy with corticosteroids should be administered cautiously in patients with preexisting electrolyte disturbances. Caution is also advised when treating patients with seizure disorders, since electrolyte disturbances may trigger seizure activity.

Fluid Retention

Moderate:

Dalalone LA

The dexAMETHasone in Dalalone LA has a moderate potential interaction with Fluid Retention.

Corticosteroids may cause hypernatremia, hypokalemia, fluid retention, and elevation in blood pressure. Large doses of any corticosteroid can demonstrate these effects, particularly if given for longer periods. Therapy with corticosteroids should be administered cautiously in patients with preexisting fluid retention, hypertension, congestive heart failure, and/or renal dysfunction. Dietary sodium restriction and potassium supplementation may be advisable.

Glaucoma/Intraocular Hypertension

Moderate:

Dalalone LA

The dexAMETHasone in Dalalone LA has a moderate potential interaction with Glaucoma/Intraocular Hypertension.

Prolonged use of corticosteroids may cause posterior subcapsular cataracts and elevated intraocular pressure, the latter of which may lead to glaucoma and/or damage to the optic nerves. Long-term therapy with corticosteroids should be administered cautiously in patients with a history of cataracts, glaucoma, or increased intraocular pressure.

Heart Attack

Moderate:

Dalalone LA

The dexAMETHasone in Dalalone LA has a moderate potential interaction with Heart Attack.

The use of corticosteroids may be associated with left ventricular free-wall rupture in patients who have had a recent myocardial infarction. Pharmacologic dosages of corticosteroids should be administered with great caution in such patients.

Heart Failure

Moderate:

Dalalone LA

The dexAMETHasone in Dalalone LA has a moderate potential interaction with Heart Failure.

Corticosteroids may cause hypernatremia, hypokalemia, fluid retention, and elevation in blood pressure. Large doses of any corticosteroid can demonstrate these effects, particularly if given for longer periods. Therapy with corticosteroids should be administered cautiously in patients with preexisting fluid retention, hypertension, congestive heart failure, and/or renal dysfunction. Dietary sodium restriction and potassium supplementation may be advisable.

Herpetic Keratitis

Moderate:

Dalalone LA

The dexAMETHasone in Dalalone LA has a moderate potential interaction with Herpetic Keratitis.

Pharmacologic dosages of corticosteroids should be used cautiously in patients with ocular herpes simplex because of the risk of corneal perforation. Corticosteroids are not recommended for patients with active ocular herpes simplex.

High Blood Pressure

Moderate:

Dalalone LA

The dexAMETHasone in Dalalone LA has a moderate potential interaction with High Blood Pressure.

Corticosteroids may cause hypernatremia, hypokalemia, fluid retention, and elevation in blood pressure. Large doses of any corticosteroid can demonstrate these effects, particularly if given for longer periods. Therapy with corticosteroids should be administered cautiously in patients with preexisting fluid retention, hypertension, congestive heart failure, and/or renal dysfunction. Dietary sodium restriction and potassium supplementation may be advisable.

Moderate:

ivacaftor

Ivacaftor has a moderate potential interaction with High Blood Pressure.

The use of products containing ivacaftor is associated with an increase in blood pressure. Close monitoring of blood pressure is recommended periodically in all patients, in particular in hypertensive patients.

High Cholesterol

Moderate:

Dalalone LA

The dexAMETHasone in Dalalone LA has a moderate potential interaction with High Cholesterol.

Corticosteroids may elevate serum triglyceride and LDL cholesterol levels if used for longer than brief periods. Patients with preexisting hyperlipidemia may require closer monitoring during prolonged corticosteroid therapy, and adjustments made accordingly in their lipid-lowering regimen.

History, Peptic Ulcer

Moderate:

Dalalone LA

The dexAMETHasone in Dalalone LA has a moderate potential interaction with History, Peptic Ulcer.

Corticosteroids may cause peptic ulcer disease and gastrointestinal (GI) hemorrhage, usually when given in high dosages or for prolonged periods. However, even conventional dosages may aggravate symptoms in patients with a history of peptic ulcers. Delayed healing of ulcers has also been reported. Therapy with corticosteroids should be avoided or administered cautiously in patients with active or latent peptic ulcers or other risk factors for GI bleeding. Some clinicians recommend the use of prophylactic antacids or H2-antagonists between meals when large doses of corticosteroids are necessary.

History, Radiation Therapy

Moderate:

ivacaftor

Ivacaftor has a moderate potential interaction with History, Radiation Therapy.

Cases of non-congenital lens opacities or cataracts have been reported in pediatric patients treated with products containing ivacaftor. Although other risk factors could be present in some cases (e.g., corticosteroid use or exposure to radiation), a possible risk attributable to this medication cannot be excluded. Baseline and ophthalmological examinations are recommended in pediatric patients initiating treatment

History, Thrombotic/Thromboembolic Disorder

Moderate:

Dalalone LA

The dexAMETHasone in Dalalone LA has a moderate potential interaction with History, Thrombotic/Thromboembolic Disorder.

Corticosteroids may increase blood coagulability and have rarely been associated with the development of intravascular thrombosis, thromboembolism, and thrombophlebitis. Therapy with corticosteroids should be administered cautiously in patients who have or may be predisposed to thrombotic or thromboembolic disorders.

History, Tuberculosis

Moderate:

Dalalone LA

The dexAMETHasone in Dalalone LA has a moderate potential interaction with History, Tuberculosis.

In patients with latent tuberculosis or tuberculin reactivity, the use of pharmacologic dosages of corticosteroids may cause a reactivation of the disease. Close monitoring for signs and symptoms of tuberculosis is recommended if corticosteroid therapy is administered to patients with a history of tuberculosis or tuberculin reactivity. During prolonged corticosteroid therapy, tuberculosis chemoprophylaxis may be considered.

Hyperadrenocorticism

Moderate:

Dalalone LA

The dexAMETHasone in Dalalone LA has a moderate potential interaction with Hyperadrenocorticism.

Corticosteroids mimic the effects of endogenous cortisol and aldosterone. Use of these agents may aggravate conditions of hyperadrenocorticalism in a dose-dependent manner.

Hyperaldosteronism

Moderate:

Dalalone LA

The dexAMETHasone in Dalalone LA has a moderate potential interaction with Hyperaldosteronism.

Corticosteroids mimic the effects of endogenous cortisol and aldosterone. Use of these agents may aggravate conditions of hyperadrenocorticalism in a dose-dependent manner.

Hypernatremia

Moderate:

Dalalone LA

The dexAMETHasone in Dalalone LA has a moderate potential interaction with Hypernatremia.

Corticosteroids can cause hypernatremia, hypokalemia, and fluid retention. These mineralocorticoid effects are most significant with fludrocortisone, followed by hydrocortisone and cortisone, then by prednisone and prednisolone. The remaining corticosteroids, betamethasone, dexamethasone, methylprednisolone, and triamcinolone, have little mineralocorticoid activities. However, large doses of any corticosteroid can demonstrate these effects, particularly if given for longer than brief periods. All corticosteroids also increase excretion of calcium and can cause hypocalcemia. Therapy with corticosteroids should be administered cautiously in patients with preexisting electrolyte disturbances. Caution is also advised when treating patients with seizure disorders, since electrolyte disturbances may trigger seizure activity.

Hypocalcemia

Moderate:

Dalalone LA

The dexAMETHasone in Dalalone LA has a moderate potential interaction with Hypocalcemia.

Corticosteroids can cause hypernatremia, hypokalemia, and fluid retention. These mineralocorticoid effects are most significant with fludrocortisone, followed by hydrocortisone and cortisone, then by prednisone and prednisolone. The remaining corticosteroids, betamethasone, dexamethasone, methylprednisolone, and triamcinolone, have little mineralocorticoid activities. However, large doses of any corticosteroid can demonstrate these effects, particularly if given for longer than brief periods. All corticosteroids also increase excretion of calcium and can cause hypocalcemia. Therapy with corticosteroids should be administered cautiously in patients with preexisting electrolyte disturbances. Caution is also advised when treating patients with seizure disorders, since electrolyte disturbances may trigger seizure activity.

Hypokalemia

Moderate:

Dalalone LA

The dexAMETHasone in Dalalone LA has a moderate potential interaction with Hypokalemia.

Corticosteroids can cause hypernatremia, hypokalemia, and fluid retention. These mineralocorticoid effects are most significant with fludrocortisone, followed by hydrocortisone and cortisone, then by prednisone and prednisolone. The remaining corticosteroids, betamethasone, dexamethasone, methylprednisolone, and triamcinolone, have little mineralocorticoid activities. However, large doses of any corticosteroid can demonstrate these effects, particularly if given for longer than brief periods. All corticosteroids also increase excretion of calcium and can cause hypocalcemia. Therapy with corticosteroids should be administered cautiously in patients with preexisting electrolyte disturbances. Caution is also advised when treating patients with seizure disorders, since electrolyte disturbances may trigger seizure activity.

Infection

Major:

Dalalone LA

The dexAMETHasone in Dalalone LA has a major potential interaction with Infection.

The immunosuppressant and anti-inflammatory effects of corticosteroids, particularly at higher dosages, may reduce resistance to infectious agents, increase the risk of disseminated infections, mask symptoms of infection, and reactivate or exacerbate latent/resolved infections; fatal cases have been reported. Avoid use of corticosteroids in patients with cerebral malaria. Screen patients for active (or history of) infection with tuberculosis, hepatitis, varicella, measles, and amebiasis, especially prior to prolonged treatment. Closely monitor for reactivation of latent infections; chemoprophylaxis may be required. In general, corticosteroids should not be used in patients with active infections, especially systemic fungal infections, unless medically necessary to control drug reactions. However, for corticosteroid-dependent patients who develop a severe or life-threatening infection, continuation of corticosteroid therapy with at least physiologic replacement dosages should be considered, since these patients may have secondary adrenocortical insufficiency. Removal of external steroid during periods of stress may be detrimental to these patients.

Intestinal Anastomoses

Moderate:

Dalalone LA

The dexAMETHasone in Dalalone LA has a moderate potential interaction with Intestinal Anastomoses.

Corticosteroids may cause gastrointestinal perforation and hemorrhage, usually when given in high dosages or for prolonged periods. They may also mask symptoms of complications such as peritonitis or intraabdominal sepsis. Therapy with corticosteroids should be avoided or administered cautiously in patients with diverticulitis, nonspecific ulcerative colitis (if there is a probability of impending perforation, abscess, or other pyogenic infection), or recent intestinal anastomoses.

Liver Disease

Moderate:

Dalalone LA

The dexAMETHasone in Dalalone LA has a moderate potential interaction with Liver Disease.

Corticosteroids are primarily metabolized by the liver and may have enhanced effects in patients with liver disease. Dosage adjustments may be necessary in these patients.

Moderate:

ivacaftor

Ivacaftor has a moderate potential interaction with Liver Disease.

There are no data on the use of ivacaftor in patients with severe liver dysfunction. Ivacaftor should not be used in patients less than 6 months of age with any level of hepatic impairment. Caution is recommended if using products containing ivacaftor in cystic fibrosis (CF) patients with advanced liver disease. Use of ivacaftor in these patients has been associated with worsening of liver function, including hepatic encephalopathy. In CF patients with pre-existing cirrhosis with portal hypertension, liver function decompensation, including liver failure leading to death, has been reported. Closely monitor patients as recommended by the manufacturer after initiating treatment, especially in those with liver disease or a history of transaminase/bilirubin elevations.

Myasthenia Gravis

Moderate:

Dalalone LA

The dexAMETHasone in Dalalone LA has a moderate potential interaction with Myasthenia Gravis.

Although corticosteroids are commonly used in the treatment of myasthenia gravis to increase muscle strength, these agents should nevertheless be administered with caution in such setting. Patients should be treated in an intensive care unit and receive respiratory support, since muscle strength may markedly decrease initially, particularly with high dosages. Preferably, therapy should begin with relatively low dosages (15 to 25 mg/day of prednisone or equivalent) and be increased stepwise as tolerated (approximately 5 mg/day of prednisone or equivalent at 2- to 3-day intervals until marked clinical improvement or a dosage of 50 mg/day is reached). Improvement may be delayed and gradual. Thus, it is important not to discontinue therapy prematurely.

Myoneural Disorder

Moderate:

Dalalone LA

The dexAMETHasone in Dalalone LA has a moderate potential interaction with Myoneural Disorder.

Toxic myopathy has been observed with the chronic use or the administration of large doses of corticosteroids, often in patients with disorders of neuromuscular transmission such as myasthenia gravis or in patients receiving neuromuscular blocking agents. Fluorinated corticosteroids such as betamethasone, dexamethasone, and triamcinolone appear to cause more severe muscle atrophy and weakness than the nonfluorinated agents. Moreover, multiple-daily doses are more toxic than once-daily or, preferably, alternate-day morning doses. Steroid myopathy is generalized and sometimes accompanied by respiratory weakness and dyspnea. In some cases, it has resulted in quadriparesis. Elevations of creatine kinase (CK) may also occur, albeit infrequently. After withdrawal of corticosteroid therapy, recovery may be slow and incomplete. Therapy with corticosteroids should be administered cautiously in patients with preexisting myopathy or myoneural disorders since these conditions may confound the diagnosis of steroid-induced myopathy. The presence of a normal serum CK level, minimal/no changes of myopathy on electromyography, and type 2 muscle fiber atrophy on biopsy are helpful in suggesting steroid-induced weakness. If steroid myopathy is suspected, a dosage reduction or discontinuation of the steroid should be considered.

Myopathy

Moderate:

Dalalone LA

The dexAMETHasone in Dalalone LA has a moderate potential interaction with Myopathy.

Toxic myopathy has been observed with the chronic use or the administration of large doses of corticosteroids, often in patients with disorders of neuromuscular transmission such as myasthenia gravis or in patients receiving neuromuscular blocking agents. Fluorinated corticosteroids such as betamethasone, dexamethasone, and triamcinolone appear to cause more severe muscle atrophy and weakness than the nonfluorinated agents. Moreover, multiple-daily doses are more toxic than once-daily or, preferably, alternate-day morning doses. Steroid myopathy is generalized and sometimes accompanied by respiratory weakness and dyspnea. In some cases, it has resulted in quadriparesis. Elevations of creatine kinase (CK) may also occur, albeit infrequently. After withdrawal of corticosteroid therapy, recovery may be slow and incomplete. Therapy with corticosteroids should be administered cautiously in patients with preexisting myopathy or myoneural disorders since these conditions may confound the diagnosis of steroid-induced myopathy. The presence of a normal serum CK level, minimal/no changes of myopathy on electromyography, and type 2 muscle fiber atrophy on biopsy are helpful in suggesting steroid-induced weakness. If steroid myopathy is suspected, a dosage reduction or discontinuation of the steroid should be considered.

Organ Transplant

Moderate:

ivacaftor

Ivacaftor has a moderate potential interaction with Organ Transplant.

The use of products containing ivacaftor has not been studied in patients with cystic fibrosis who have undergone organ transplantation. Use in transplanted patients is not recommended due to potential drug-drug interactions with immunosuppressants.

Osteoporosis

Moderate:

Dalalone LA

The dexAMETHasone in Dalalone LA has a moderate potential interaction with Osteoporosis.

Corticosteroids reduce osteoblastic function and inhibit the absorption of intestinal calcium, which can result in bone resorption and bone loss during prolonged therapy. In addition, bone matrix may be affected by the protein-catabolic effects of corticosteroids, especially when given in high dosages or for prolonged periods, leading to aseptic necrosis and fractures. Long-term or high-dose corticosteroid therapy should be administered cautiously and only if necessary in patients with or at risk for osteoporosis. Adverse skeletal effects may be minimized by alternate-day or intermittent administration. Any patient receiving prolonged therapy with the equivalent of 7.5 mg prednisone/day or more are at risk for glucocorticoid-induced osteoporosis and should be managed according to The American College of Rheumatology (ACR) guidelines.

Peptic Ulcer

Moderate:

Dalalone LA

The dexAMETHasone in Dalalone LA has a moderate potential interaction with Peptic Ulcer.

Corticosteroids may cause peptic ulcer disease and gastrointestinal (GI) hemorrhage, usually when given in high dosages or for prolonged periods. However, even conventional dosages may aggravate symptoms in patients with a history of peptic ulcers. Delayed healing of ulcers has also been reported. Therapy with corticosteroids should be avoided or administered cautiously in patients with active or latent peptic ulcers or other risk factors for GI bleeding. Some clinicians recommend the use of prophylactic antacids or H2-antagonists between meals when large doses of corticosteroids are necessary.

Post MI Syndrome

Moderate:

Dalalone LA

The dexAMETHasone in Dalalone LA has a moderate potential interaction with Post MI Syndrome.

The use of corticosteroids may be associated with left ventricular free-wall rupture in patients who have had a recent myocardial infarction. Pharmacologic dosages of corticosteroids should be administered with great caution in such patients.

Prematurity/Underweight in Infancy

Major:

Dalalone LA

The dexAMETHasone in Dalalone LA has a major potential interaction with Prematurity/Underweight in Infancy.

The use of certain parenteral formulations of dexamethasone, hydrocortisone, methylprednisolone, prednisolone and triamcinolone is considered by the drug manufacturers to be contraindicated in neonates, particularly premature infants and infants of low birth weight. Some formulations of these drugs contain benzyl alcohol which, when used in bacteriostatic saline intravascular flush and endotracheal tube lavage solutions, has been associated with fatalities and severe respiratory and metabolic complications in low-birth-weight premature infants. However, many experts feel that, in the absence of benzyl alcohol-free equivalents, the amount of the preservative present in these formulations should not necessarily preclude their use if they are clearly indicated. The American Academy of Pediatrics considers benzyl alcohol in low doses (such as when used as a preservative in some medications) to be safe for newborns. Continuous infusions of high dosages of medications containing benzyl alcohol may, however, cause toxicity and should be avoided if possible.

Psychosis

Moderate:

Dalalone LA

The dexAMETHasone in Dalalone LA has a moderate potential interaction with Psychosis.

Corticosteroids may aggravate the symptoms of psychosis and emotional instability. Patients with these conditions should be monitored for increased or worsened symptoms during corticosteroid therapy.

Pulmonary Impairment

Moderate:

ivacaftor

Ivacaftor has a moderate potential interaction with Pulmonary Impairment.

The use of products containing ivacaftor is associated with respiratory events (e.g., chest discomfort, dyspnea, and respiration abnormal). Close monitoring is recommended in patients with advanced lung disease (percent predicted FEV1 less than 40).

Renal Dysfunction

Moderate:

Dalalone LA

The dexAMETHasone in Dalalone LA has a moderate potential interaction with Renal Dysfunction.

Corticosteroids may cause hypernatremia, hypokalemia, fluid retention, and elevation in blood pressure. Large doses of any corticosteroid can demonstrate these effects, particularly if given for longer periods. Therapy with corticosteroids should be administered cautiously in patients with preexisting fluid retention, hypertension, congestive heart failure, and/or renal dysfunction. Dietary sodium restriction and potassium supplementation may be advisable.

Moderate:

ivacaftor

Ivacaftor has a moderate potential interaction with Renal Dysfunction.

Ivacaftor has not been studied in patients with renal impairment. No dose adjustment is necessary for patients with mild or moderate renal impairment, however, caution is recommended in patients with severe renal impairment or end-stage renal disease.

Seizures

Moderate:

Dalalone LA

The dexAMETHasone in Dalalone LA has a moderate potential interaction with Seizures.

Corticosteroids can cause hypernatremia, hypokalemia, and fluid retention. These mineralocorticoid effects are most significant with fludrocortisone, followed by hydrocortisone and cortisone, then by prednisone and prednisolone. The remaining corticosteroids, betamethasone, dexamethasone, methylprednisolone, and triamcinolone, have little mineralocorticoid activities. However, large doses of any corticosteroid can demonstrate these effects, particularly if given for longer than brief periods. All corticosteroids also increase excretion of calcium and can cause hypocalcemia. Therapy with corticosteroids should be administered cautiously in patients with preexisting electrolyte disturbances. Caution is also advised when treating patients with seizure disorders, since electrolyte disturbances may trigger seizure activity.

Strongyloidiasis

Moderate:

Dalalone LA

The dexAMETHasone in Dalalone LA has a moderate potential interaction with Strongyloidiasis.

Unlike most helminths, Strongyloides stercoralis has the ability to replicate in the human host. In patients with strongyloidiasis, the use of pharmacologic or immunosuppressive dosages of corticosteroids may result in Strongyloides hyperinfection and dissemination with widespread larval migration, often accompanied by severe enterocolitis and potentially fatal gram-negative septicemia. Therapy with corticosteroids should be administered with extreme caution, if at all, in these patients. For patients on corticosteroids who develop known or suspected Strongyloides infestation, withdrawal of corticosteroids or reduction of the dose of corticosteroids is recommended.

Systemic Sclerosis

Moderate:

Dalalone LA

The dexAMETHasone in Dalalone LA has a moderate potential interaction with Systemic Sclerosis.

In patients with scleroderma, corticosteroids may precipitate renal crisis with malignant hypertension, possibly via steroid-induced increases in renin substrate and angiotensin II levels and decreases in vasodilator prostaglandin production. Renal failure may ensue. Therapy with corticosteroids should be administered cautiously in patients with scleroderma. In addition, they should be limited to short-term use.

Thrombotic/Thromboembolic Disorder

Moderate:

Dalalone LA

The dexAMETHasone in Dalalone LA has a moderate potential interaction with Thrombotic/Thromboembolic Disorder.

Corticosteroids may increase blood coagulability and have rarely been associated with the development of intravascular thrombosis, thromboembolism, and thrombophlebitis. Therapy with corticosteroids should be administered cautiously in patients who have or may be predisposed to thrombotic or thromboembolic disorders.

Tuberculosis, Latent

Moderate:

Dalalone LA

The dexAMETHasone in Dalalone LA has a moderate potential interaction with Tuberculosis, Latent.

In patients with latent tuberculosis or tuberculin reactivity, the use of pharmacologic dosages of corticosteroids may cause a reactivation of the disease. Close monitoring for signs and symptoms of tuberculosis is recommended if corticosteroid therapy is administered to patients with a history of tuberculosis or tuberculin reactivity. During prolonged corticosteroid therapy, tuberculosis chemoprophylaxis may be considered.

Ulcerative Colitis

Moderate:

Dalalone LA

The dexAMETHasone in Dalalone LA has a moderate potential interaction with Ulcerative Colitis.

Corticosteroids may cause gastrointestinal perforation and hemorrhage, usually when given in high dosages or for prolonged periods. They may also mask symptoms of complications such as peritonitis or intraabdominal sepsis. Therapy with corticosteroids should be avoided or administered cautiously in patients with diverticulitis, nonspecific ulcerative colitis (if there is a probability of impending perforation, abscess, or other pyogenic infection), or recent intestinal anastomoses.

Underactive Thyroid

Moderate:

Dalalone LA

The dexAMETHasone in Dalalone LA has a moderate potential interaction with Underactive Thyroid.

Corticosteroids may have enhanced effects in hypothyroidism due to decreased metabolism of these agents. Patients with hypothyroidism should be monitored more closely for excessive cortisol effects. Dosage adjustments may be required secondary to changes in their thyroid condition.

More resources

Dalalone LA

A total of 872 drugs are known to interact with Dalalone LA.

ivacaftor

A total of 468 drugs are known to interact with ivacaftor.

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.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.