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Interactions between Rolaids Regular Strength and Selpercatinib

2 drug interactions and 28 additional warnings found for the following 2 drugs:

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Drug interactions

Major drug interactions

Major:

calcium carbonate selpercatinib

Applies to: Rolaids Regular Strength (calcium carbonate / magnesium hydroxide) and selpercatinib
Generally avoid

Coadministration with drugs that increase gastric pH may significantly decrease the oral bioavailability of selpercatinib and reduce its concentrations in plasma. According to the product labeling, the aqueous solubility of selpercatinib is pH-dependent, from freely soluble at low pH to slightly soluble at neutral pH. When a single dose of selpercatinib (160 mg) was administered under fasted conditions with multiple daily doses of the proton pump inhibitor omeprazole (40 mg once daily), selpercatinib peak plasma concentration (Cmax) and systemic exposure (AUC) decreased by 88% and 69%, respectively, compared to selpercatinib administered alone while fasting. The interaction may also occur with other acid reducing or neutralizing agents and may result in diminished anti-tumor activity of selpercatinib.

Management

Concomitant use of selpercatinib with locally-acting antacids or other agents with acid neutralizing or reducing effects should generally be avoided. If coadministration is required, the manufacturer recommends taking selpercatinib 2 hours before or 2 hours after the antacid.

References (4)
  1. (2024) "Product Information. Retevmo (selpercatinib)." Lilly, Eli and Company
  2. (2023) "Product Information. Retevmo (selpercatinib)." Eli Lilly Australia Pty Ltd, vA1.0
  3. (2024) "Product Information. Retsevmo (selpercatinib)." Eli Lilly and Company Ltd
  4. (2024) "Product Information. Retevmo (selpercatinib)." Loxo Oncology Inc
Major:

magnesium hydroxide selpercatinib

Applies to: Rolaids Regular Strength (calcium carbonate / magnesium hydroxide) and selpercatinib
Generally avoid

Coadministration with drugs that increase gastric pH may significantly decrease the oral bioavailability of selpercatinib and reduce its concentrations in plasma. According to the product labeling, the aqueous solubility of selpercatinib is pH-dependent, from freely soluble at low pH to slightly soluble at neutral pH. When a single dose of selpercatinib (160 mg) was administered under fasted conditions with multiple daily doses of the proton pump inhibitor omeprazole (40 mg once daily), selpercatinib peak plasma concentration (Cmax) and systemic exposure (AUC) decreased by 88% and 69%, respectively, compared to selpercatinib administered alone while fasting. The interaction may also occur with other acid reducing or neutralizing agents and may result in diminished anti-tumor activity of selpercatinib.

Management

Concomitant use of selpercatinib with locally-acting antacids or other agents with acid neutralizing or reducing effects should generally be avoided. If coadministration is required, the manufacturer recommends taking selpercatinib 2 hours before or 2 hours after the antacid.

References (4)
  1. (2024) "Product Information. Retevmo (selpercatinib)." Lilly, Eli and Company
  2. (2023) "Product Information. Retevmo (selpercatinib)." Eli Lilly Australia Pty Ltd, vA1.0
  3. (2024) "Product Information. Retsevmo (selpercatinib)." Eli Lilly and Company Ltd
  4. (2024) "Product Information. Retevmo (selpercatinib)." Loxo Oncology Inc

Food/lifestyle interactions

Major food/lifestyle interactions

Major:

selpercatinib Food/Lifestyle

Applies to: selpercatinib
Generally avoid

Grapefruit juice may increase the plasma concentrations of selpercatinib. The proposed mechanism is inhibition of CYP450 3A4-mediated first-pass metabolism in the gut wall by certain compounds present in grapefruit. Inhibition of hepatic CYP450 3A4 may also contribute. The interaction has not been studied with grapefruit juice, but has been reported for other CYP450 3A4 inhibitors. When a single dose of selpercatinib (160 mg) was coadministered with multiple doses of itraconazole (200 mg once daily), a potent CYP450 3A4 inhibitor, selpercatinib peak plasma concentration (Cmax) and systemic exposure (AUC) increased by 30% and 133%, respectively. Based on pharmacokinetic modeling, administration of multiple doses of selpercatinib (160 mg twice daily) with multiple doses of the moderate CYP450 3A4 inhibitors diltiazem (60 mg three times daily), fluconazole (200 mg once daily), or verapamil (80 mg three times daily) is predicted to increase selpercatinib Cmax by 46% to 76% and AUC by 60% to 99%. 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. Increased exposure to selpercatinib may increase the risk of serious adverse effects such as QT interval prolongation, liver transaminase and bilirubin elevations, hypertension, hemorrhage, edema, and hypersensitivity reactions (e.g., fever, rash, arthralgias/myalgias with concurrent decreased platelets or transaminitis).

Management

Until further information is available, it may be advisable for patients to limit or avoid consumption of grapefruit and grapefruit juice during treatment with selpercatinib.

References (4)
  1. (2024) "Product Information. Retevmo (selpercatinib)." Lilly, Eli and Company
  2. (2023) "Product Information. Retevmo (selpercatinib)." Eli Lilly Australia Pty Ltd, vA1.0
  3. (2024) "Product Information. Retsevmo (selpercatinib)." Eli Lilly and Company Ltd
  4. (2024) "Product Information. Retevmo (selpercatinib)." Loxo Oncology Inc

Moderate food/lifestyle interactions

Moderate:

calcium carbonate Food/Lifestyle

Applies to: Rolaids Regular Strength (calcium carbonate / magnesium hydroxide)
Adjust dosing interval

Administration with food may increase the absorption of calcium. However, foods high in oxalic acid (spinach or rhubarb), or phytic acid (bran and whole grains) may decrease calcium absorption.

Management

Calcium may be administered with food to increase absorption. Consider withholding calcium administration for at least 2 hours before or after consuming foods high in oxalic acid or phytic acid.

References (6)
  1. Cerner Multum, Inc. "UK Summary of Product Characteristics."
  2. Canadian Pharmacists Association (2006) e-CPS. http://www.pharmacists.ca/function/Subscriptions/ecps.cfm?link=eCPS_quikLink
  3. Cerner Multum, Inc. "Australian Product Information."
  4. Agencia Española de Medicamentos y Productos Sanitarios Healthcare (2008) Centro de información online de medicamentos de la AEMPS - CIMA. https://cima.aemps.es/cima/publico/home.html
  5. Mangels AR (2014) "Bone nutrients for vegetarians." Am J Clin Nutr, 100, epub
  6. Davies NT (1979) "Anti-nutrient factors affecting mineral utilization." Proc Nutr Soc, 38, p. 121-8

Disease interactions

26 potential interactions Applies to: 22 conditions, including High Blood Pressure, Heart Failure, Arrhythmia, Hypokalemia, and Inflammatory Bowel Disease.

Achlorhydria

Major:

Rolaids Regular Strength

The calcium carbonate in Rolaids Regular Strength has a major potential interaction with Achlorhydria.

Calcium is absorbed from the intestinal tract by active transport and passive diffusion. Malabsorption syndromes (celiac disease, GI resection), deficiency of vitamin D, parathyroid hormone, or calcitonin, or an alkaline gastric pH (achlorhydria, carbonate or phosphate salts) can decrease the absorption of oral formulations of calcium. Calcium is available in oral and parenteral formulations.

Arrhythmia

Major:

Rolaids Regular Strength

The calcium carbonate in Rolaids Regular Strength has a major potential interaction with Arrhythmia.

Calcium is involved in cardiac muscle contraction and electrical impulse conduction. Therapy with calcium salt formulations (particularly IV) should be administered cautiously to patients with cardiac disease. Patients receiving cardiac glycosides and concomitant IV calcium may experience arrhythmias. Therapy with IV calcium should be administered slowly and at reduced dosages in patients with cardiac disease.

Moderate:

selpercatinib

Selpercatinib has a moderate potential interaction with Arrhythmia.

Selpercatinib can cause concentration-dependent QT interval prolongation. Monitor patients who are at significant risk of developing QTc prolongation, including patients with known long QT syndromes, clinically significant bradyarrhythmias, and severe or uncontrolled heart failure. This drug has not been studied in patients with clinically significant active cardiovascular disease or recent myocardial infarction. Assess QT interval, electrolytes, and TSH at baseline and periodically during treatment, adjusting frequency based upon risk factors, including diarrhea or drug interactions. Correct hypokalemia, hypomagnesemia, and hypocalcemia prior to initiating therapy.

Bleeding Disorder

Moderate:

selpercatinib

Selpercatinib has a moderate potential interaction with Bleeding Disorder.

Serious including fatal hemorrhagic events can occur with the use of selpercatinib. Care should be exercised when using this agent in patients with bleeding disorders. It is recommended to permanently discontinue treatment in patients with severe or life-threatening hemorrhage.

Cardiovascular Conditions and Disorders

Moderate:

selpercatinib

Selpercatinib has a moderate potential interaction with Cardiovascular Conditions and Disorders.

Selpercatinib can cause concentration-dependent QT interval prolongation. Monitor patients who are at significant risk of developing QTc prolongation, including patients with known long QT syndromes, clinically significant bradyarrhythmias, and severe or uncontrolled heart failure. This drug has not been studied in patients with clinically significant active cardiovascular disease or recent myocardial infarction. Assess QT interval, electrolytes, and TSH at baseline and periodically during treatment, adjusting frequency based upon risk factors, including diarrhea or drug interactions. Correct hypokalemia, hypomagnesemia, and hypocalcemia prior to initiating therapy.

Electrolyte Abnormalities

Moderate:

selpercatinib

Selpercatinib has a moderate potential interaction with Electrolyte Abnormalities.

Selpercatinib can cause concentration-dependent QT interval prolongation. Monitor patients who are at significant risk of developing QTc prolongation, including patients with known long QT syndromes, clinically significant bradyarrhythmias, and severe or uncontrolled heart failure. This drug has not been studied in patients with clinically significant active cardiovascular disease or recent myocardial infarction. Assess QT interval, electrolytes, and TSH at baseline and periodically during treatment, adjusting frequency based upon risk factors, including diarrhea or drug interactions. Correct hypokalemia, hypomagnesemia, and hypocalcemia prior to initiating therapy.

Gastrointestinal Obstruction

Major:

Rolaids Regular Strength

The magnesium hydroxide in Rolaids Regular Strength has a major potential interaction with Gastrointestinal Obstruction.

The use of laxatives is contraindicated in patients with intestinal obstruction disorders. Patients with intestinal obstruction disorders may need their underlying condition treated to correct the constipation. Some laxatives require reduction in the colon to their active form to be effective which may be a problem in patients with intestinal obstruction.

Heart Failure

Moderate:

selpercatinib

Selpercatinib has a moderate potential interaction with Heart Failure.

Selpercatinib can cause concentration-dependent QT interval prolongation. Monitor patients who are at significant risk of developing QTc prolongation, including patients with known long QT syndromes, clinically significant bradyarrhythmias, and severe or uncontrolled heart failure. This drug has not been studied in patients with clinically significant active cardiovascular disease or recent myocardial infarction. Assess QT interval, electrolytes, and TSH at baseline and periodically during treatment, adjusting frequency based upon risk factors, including diarrhea or drug interactions. Correct hypokalemia, hypomagnesemia, and hypocalcemia prior to initiating therapy.

High Blood Pressure

Moderate:

selpercatinib

Selpercatinib has a moderate potential interaction with High Blood Pressure.

Selpercatinib may cause hypertension and therapy should not be initiated in patients with uncontrolled hypertension. Care should be exercised when using this agent in hypertensive patients. Optimize blood pressure before starting treatment. It is recommended to monitor blood pressure after 1 week, and regularly as clinically indicated. Initiate or adjust anti-hypertensive therapy as appropriate. Withhold, reduce dose, or permanently discontinue treatment based on the severity.

History - Myocardial Infarction

Moderate:

selpercatinib

Selpercatinib has a moderate potential interaction with History - Myocardial Infarction.

Selpercatinib can cause concentration-dependent QT interval prolongation. Monitor patients who are at significant risk of developing QTc prolongation, including patients with known long QT syndromes, clinically significant bradyarrhythmias, and severe or uncontrolled heart failure. This drug has not been studied in patients with clinically significant active cardiovascular disease or recent myocardial infarction. Assess QT interval, electrolytes, and TSH at baseline and periodically during treatment, adjusting frequency based upon risk factors, including diarrhea or drug interactions. Correct hypokalemia, hypomagnesemia, and hypocalcemia prior to initiating therapy.

Hypocalcemia

Moderate:

selpercatinib

Selpercatinib has a moderate potential interaction with Hypocalcemia.

Selpercatinib can cause concentration-dependent QT interval prolongation. Monitor patients who are at significant risk of developing QTc prolongation, including patients with known long QT syndromes, clinically significant bradyarrhythmias, and severe or uncontrolled heart failure. This drug has not been studied in patients with clinically significant active cardiovascular disease or recent myocardial infarction. Assess QT interval, electrolytes, and TSH at baseline and periodically during treatment, adjusting frequency based upon risk factors, including diarrhea or drug interactions. Correct hypokalemia, hypomagnesemia, and hypocalcemia prior to initiating therapy.

Hypokalemia

Moderate:

selpercatinib

Selpercatinib has a moderate potential interaction with Hypokalemia.

Selpercatinib can cause concentration-dependent QT interval prolongation. Monitor patients who are at significant risk of developing QTc prolongation, including patients with known long QT syndromes, clinically significant bradyarrhythmias, and severe or uncontrolled heart failure. This drug has not been studied in patients with clinically significant active cardiovascular disease or recent myocardial infarction. Assess QT interval, electrolytes, and TSH at baseline and periodically during treatment, adjusting frequency based upon risk factors, including diarrhea or drug interactions. Correct hypokalemia, hypomagnesemia, and hypocalcemia prior to initiating therapy.

Inflammatory Bowel Disease

Major:

Rolaids Regular Strength

The magnesium hydroxide in Rolaids Regular Strength has a major potential interaction with Inflammatory Bowel Disease.

The use of laxatives is contraindicated in patients with inflammatory bowel disease. Patients with inflammatory bowel disease may experience colonic perforation with use of stimulant laxatives.

Interstitial Lung Disease

Moderate:

selpercatinib

Selpercatinib has a moderate potential interaction with Interstitial Lung Disease.

Selpercatinib may cause severe, life-threatening, or fatal interstitial lung disease (ILD)/pneumonitis. Monitor for new or worsening pulmonary symptoms. Withhold therapy and promptly investigate acute or worsening respiratory symptoms suggestive of ILD/pneumonitis (e.g., dyspnea, cough, and fever).

Liver Disease

Moderate:

selpercatinib

Selpercatinib has a moderate potential interaction with Liver Disease.

Selpercatinib is metabolized predominantly by CYP450 3A4. The dose of selpercatinib should be reduced in patients with severe hepatic impairment. No dosage modification is recommended for patients with mild or moderate hepatic impairment. Serious hepatic adverse reactions have been reported in patients treated with selpercatinib. Monitor ALT and AST before starting therapy with selpercatinib, every two weeks during the first three months, then monthly thereafter and as clinically indicated. It is recommended to withhold, reduce dose or permanently discontinue treatment based on the severity of selpercatinib-related adverse reactions in patients with hepatic impairment.

Long QT Syndrome

Moderate:

selpercatinib

Selpercatinib has a moderate potential interaction with Long QT Syndrome.

Selpercatinib can cause concentration-dependent QT interval prolongation. Monitor patients who are at significant risk of developing QTc prolongation, including patients with known long QT syndromes, clinically significant bradyarrhythmias, and severe or uncontrolled heart failure. This drug has not been studied in patients with clinically significant active cardiovascular disease or recent myocardial infarction. Assess QT interval, electrolytes, and TSH at baseline and periodically during treatment, adjusting frequency based upon risk factors, including diarrhea or drug interactions. Correct hypokalemia, hypomagnesemia, and hypocalcemia prior to initiating therapy.

Magnesium Imbalance

Moderate:

selpercatinib

Selpercatinib has a moderate potential interaction with Magnesium Imbalance.

Selpercatinib can cause concentration-dependent QT interval prolongation. Monitor patients who are at significant risk of developing QTc prolongation, including patients with known long QT syndromes, clinically significant bradyarrhythmias, and severe or uncontrolled heart failure. This drug has not been studied in patients with clinically significant active cardiovascular disease or recent myocardial infarction. Assess QT interval, electrolytes, and TSH at baseline and periodically during treatment, adjusting frequency based upon risk factors, including diarrhea or drug interactions. Correct hypokalemia, hypomagnesemia, and hypocalcemia prior to initiating therapy.

Malabsorption Syndrome

Major:

Rolaids Regular Strength

The calcium carbonate in Rolaids Regular Strength has a major potential interaction with Malabsorption Syndrome.

Calcium is absorbed from the intestinal tract by active transport and passive diffusion. Malabsorption syndromes (celiac disease, GI resection), deficiency of vitamin D, parathyroid hormone, or calcitonin, or an alkaline gastric pH (achlorhydria, carbonate or phosphate salts) can decrease the absorption of oral formulations of calcium. Calcium is available in oral and parenteral formulations.

Phosphate Imbalance

Major:

Rolaids Regular Strength

The calcium carbonate in Rolaids Regular Strength has a major potential interaction with Phosphate Imbalance.

Elevated serum concentrations of calcium and phosphate can exceed the solubility level and result in calcium- phosphate precipitates that deposit in vascular and renal systems as well as other soft tissues of the body. Therapy with calcium should be administered with extreme caution in patients with hyperphosphatemia (hypoparathyroidism or severe renal impairment). Administration of oral calcium acetate or calcium carbonate, in addition to providing calcium, complexes phosphates within the GI tract. These complexes are eliminated in the feces. Clinical monitoring of serum calcium and phosphate concentrations is necessary.

Renal Dysfunction

Major:

Rolaids Regular Strength

The calcium carbonate in Rolaids Regular Strength has a major potential interaction with Renal Dysfunction.

Absorption of oral calcium formulations may be altered and elimination of calcium by the kidney decreased with renal impairment. Hyperphosphatemia occurs during renal failure. Calcium acetate or calcium carbonate, in addition to providing calcium, complexes phosphates within the GI tract. Calcium carbonate can partially correct metabolic acidosis associated with chronic renal failure. Clinical monitoring of renal function and serum calcium and phosphate concentrations is necessary.

Major:

Rolaids Regular Strength

The magnesium hydroxide in Rolaids Regular Strength has a major potential interaction with Renal Dysfunction.

Magnesium is eliminated by the kidney. The serum concentration of magnesium is increased in patients with renal impairment. Magnesium toxicity includes CNS depression, muscular paralysis, respiratory depression, hypotension and prolonged cardiac conduction time. Disappearance of the patellar reflex is a useful clinical sign of magnesium intoxication. Therapy with magnesium should be administered cautiously and dosages should be modified in patients with compromised renal function. Clinical monitoring of serum magnesium levels is recommended.

Moderate:

selpercatinib

Selpercatinib has a moderate potential interaction with Renal Dysfunction.

Tumor lysis syndrome has been reported with use of selpercatinib in patients with medullary thyroid carcinoma. Patients with rapidly growing tumors, a high tumor burden, renal dysfunction, or dehydration who take selpercatinib may be at increased risk. Closely monitor at-risk patients and consider appropriate prophylaxis, including hydration.

Moderate:

selpercatinib

Selpercatinib has a moderate potential interaction with Renal Dysfunction.

A recommended dose of selpercatinib has not been established for patients with end-stage renal disease. No dosage modification is recommended for patients with mild to severe renal impairment. The use of selpercatinib may increase serum creatinine. It is recommended to consider alternative markers of renal function if persistent elevations in serum creatinine are observed.

Sarcoidosis

Major:

Rolaids Regular Strength

The calcium carbonate in Rolaids Regular Strength has a major potential interaction with Sarcoidosis.

Hypercalciuria, with or without hypercalcemia, may occasionally occur in patients with sarcoidosis. Elevated calcium levels may result from increased intestinal absorption of calcium, which is related to the extrarenal production of vitamin D by mononuclear phagocytes present within the sarcoid granuloma. Therapy with calcium salts should be administered cautiously and only if necessary in patients with sarcoidosis.

Thyroid Disease

Moderate:

selpercatinib

Selpercatinib has a moderate potential interaction with Thyroid Disease.

Selpercatinib can cause concentration-dependent QT interval prolongation. Monitor patients who are at significant risk of developing QTc prolongation, including patients with known long QT syndromes, clinically significant bradyarrhythmias, and severe or uncontrolled heart failure. This drug has not been studied in patients with clinically significant active cardiovascular disease or recent myocardial infarction. Assess QT interval, electrolytes, and TSH at baseline and periodically during treatment, adjusting frequency based upon risk factors, including diarrhea or drug interactions. Correct hypokalemia, hypomagnesemia, and hypocalcemia prior to initiating therapy.

Tumor Lysis Syndrome

Moderate:

selpercatinib

Selpercatinib has a moderate potential interaction with Tumor Lysis Syndrome.

Tumor lysis syndrome has been reported with use of selpercatinib in patients with medullary thyroid carcinoma. Patients with rapidly growing tumors, a high tumor burden, renal dysfunction, or dehydration who take selpercatinib may be at increased risk. Closely monitor at-risk patients and consider appropriate prophylaxis, including hydration.

More resources

Rolaids Regular Strength

A total of 463 drugs are known to interact with Rolaids Regular Strength.

selpercatinib

A total of 670 drugs are known to interact with selpercatinib.

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.