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Drug Interaction Report

1 drug interaction and 13 additional warnings found for the following 2 drugs:

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Drug interactions

Moderate drug interactions

Moderate:

DOCEtaxel belzutifan

Applies to: docetaxel, Welireg (belzutifan)

Belzutifan may reduce the blood levels and effects of DOCEtaxel.

Contact your doctor if your symptoms worsen or your condition changes during treatment with these medications. Your doctor may be able to prescribe alternatives that do not interact, or you may need a dose adjustment or more frequent monitoring to safely use both medications.

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

Major food/lifestyle interactions

Major:

Food/Lifestyle DOCEtaxel

Applies to: docetaxel

You should preferably avoid the regular consumption of grapefruits and grapefruit juice while taking DOCEtaxel. Grapefruit and grapefruit juice can significantly increase the blood levels of DOCEtaxel.

This may increase the risk of side effects such as:

  • nausea
  • vomiting
  • diarrhea
  • mouth sores
  • fluid retention
  • nerve pain
  • numbness
  • tingling
  • muscle pain or weakness
  • impaired bone marrow function resulting in low numbers of different types of blood cells

You may also be more likely to develop anemia, bleeding problems, or infections due to low blood cell counts.

Your doctor may be able to prescribe alternatives that do not interact, or you may need a dose adjustment or more frequent monitoring to safely use both medications.

You should contact your doctor if you develop:

  • paleness
  • fatigue
  • dizziness
  • fainting
  • unusual bruising or bleeding
  • fever
  • chills
  • diarrhea
  • sore throat
  • muscle aches
  • shortness of breath
  • blood in phlegm
  • weight loss
  • red or inflamed skin
  • body sores
  • pain or burning during urination

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

12 potential interactionsApplies to: 11 conditions, including Peripheral Neuropathy, Anemia, Fever, Fluid Retention, and Liver Disease.

Alcoholism

Moderate:

docetaxel

DOCEtaxel has a moderate potential interaction with Alcoholism.

The alcohol content in a dose of docetaxel injection may affect the central nervous system. Cases of intoxication have been reported with some formulations of docetaxel due to the alcohol content. Close monitoring is recommended in alcoholic patients. Consideration should be given to the alcohol content in docetaxel injection on the ability to drive or use machines immediately after the infusion.

Anemia

Moderate:

Welireg

The belzutifan in Welireg has a moderate potential interaction with Anemia.

Belzutifan can cause severe anemia that can require a blood transfusion. Patients should be monitored for anemia before starting treatment. Withhold treatment in patients with hemoglobin below 9 g/dL. Transfuse patients as clinically indicated. Close monitoring is advised during treatment.

Bone Marrow Depression/Low Blood Counts

Major:

docetaxel

DOCEtaxel has a major potential interaction with Bone Marrow Depression/Low Blood Counts.

The use of docetaxel is contraindicated in patients with a neutrophil count < 1500/mm3. Docetaxel induces dose-related myelosuppression resulting in neutropenia, thrombocytopenia, and anemia. Neutropenia occurs in all patients administered 60-100 mg/m2 of docetaxel. Grade 4 neutropenia (< 500/mm3) occurs in nearly all patients administered 100 mg/m2 of docetaxel. Patients should be instructed to immediately report any signs or symptoms suggesting bone marrow suppression such as fever, sore throat, or local infection. Therapy should be administered cautiously to patients with compromised bone marrow reserve and should be withheld until neutrophil levels is > 1500/mm3 and/or platelet counts is > 100,000/mm3. A 25% reduction in dosage is recommended during subsequent cycles following severe neutropenia (< 500/mm3). It is recommended to performed frequent blood cell counts on all patients receiving docetaxel.

Fever

Major:

docetaxel

DOCEtaxel has a major potential interaction with Fever.

The use of docetaxel is contraindicated in patients with a neutrophil count < 1500/mm3. Docetaxel induces dose-related myelosuppression resulting in neutropenia, thrombocytopenia, and anemia. Neutropenia occurs in all patients administered 60-100 mg/m2 of docetaxel. Grade 4 neutropenia (< 500/mm3) occurs in nearly all patients administered 100 mg/m2 of docetaxel. Patients should be instructed to immediately report any signs or symptoms suggesting bone marrow suppression such as fever, sore throat, or local infection. Therapy should be administered cautiously to patients with compromised bone marrow reserve and should be withheld until neutrophil levels is > 1500/mm3 and/or platelet counts is > 100,000/mm3. A 25% reduction in dosage is recommended during subsequent cycles following severe neutropenia (< 500/mm3). It is recommended to performed frequent blood cell counts on all patients receiving docetaxel.

Fluid Retention

Major:

docetaxel

DOCEtaxel has a major potential interaction with Fluid Retention.

Severe fluid retention characterized by peripheral edema, generalized edema, pleural effusion, dyspnea at rest, cardiac tamponade, or abdominal distention due to ascites has been reported during docetaxel therapy. Therapy with docetaxel should be administered cautiously to patients adversely affected by fluid retention. Prophylaxis with a five day dexamethasone premedication regimen is recommended, however, fluid retention has occurred despite this pretreatment.

Infection

Major:

docetaxel

DOCEtaxel has a major potential interaction with Infection.

Because of their cytotoxic effects on rapidly proliferating tissues, antineoplastic agents frequently can, to varying extent, induce myelosuppression. The use of these drugs may be contraindicated in patients with known infectious diseases. All patients should be instructed to immediately report any signs or symptoms suggesting infection such as fever, sore throat, or local infection during antineoplastic therapy. Close clinical monitoring of hematopoietic function is recommended.

Liver Disease

Major:

docetaxel

DOCEtaxel has a major potential interaction with Liver Disease.

Docetaxel is extensively metabolized by the liver. Total body clearance of docetaxel has been reported to be reduced as much as 27% in patients with mild to moderate hepatic impairment resulting in a 38% increase of docetaxel serum concentration. Patients with elevated transaminase levels (>1.5 times the upper limits of normal) and alkaline phosphatase (>2.5 times the upper limits of normal) should not be administered docetaxel. The incidence of docetaxel related deaths is increased in patients with impaired hepatic function. Bilirubin, transaminase, and alkaline phosphatase levels should be obtained prior to each cycle of docetaxel therapy. Patients with combined abnormalities of transaminases and alkaline phosphatase should not be treated with this agent.

Moderate:

Welireg

The belzutifan in Welireg has a moderate potential interaction with Liver Disease.

Belzutifan has not been studied in patients with moderate and severe hepatic impairment. Caution is advised. No dosage modification is required in patients with mild hepatic impairment.

Macular Edema

Major:

docetaxel

DOCEtaxel has a major potential interaction with Macular Edema.

Cystoid macular edema has been reported with the use of docetaxel. Patients with impaired vision should undergo a prompt and comprehensive ophthalmologic examination prior to therapy with this agent. If cystoid macular edema is diagnosed, treatment should be discontinued and appropriate treatment initiated. Alternative non-taxane cancer treatment should be considered.

Peripheral Neuropathy

Moderate:

docetaxel

DOCEtaxel has a moderate potential interaction with Peripheral Neuropathy.

Severe neurosensory symptoms such as paresthesia, dysesthesia, and pain have been reported during docetaxel therapy. Therapy with docetaxel should be administered cautiously to patients with or predisposition to neurosensory symptoms. Although reversible with discontinuation of docetaxel therapy, the dosage must be adjusted if neurosensory symptoms occur and therapy discontinued if symptoms persist.

Pulmonary Impairment

Moderate:

Welireg

The belzutifan in Welireg has a moderate potential interaction with Pulmonary Impairment.

Belzutifan can cause severe hypoxia. Oxygen saturation should be monitored before treatment initiation. Withhold treatment if pulse oximeter is less than 88% or PaO2 is 55 mmHg or less. Monitor patients closely during treatment, administer oxygen or hospitalize as clinically needed. Treatment may need to be suspended or discontinued depending on the severity of the hypoxia.

Renal Dysfunction

Moderate:

Welireg

The belzutifan in Welireg has a moderate potential interaction with Renal Dysfunction.

Belzutifan has not been studied in patients with severe renal impairment. Caution is advised. No dosage modification is required in patients with mild or moderate renal impairment.

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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Further information

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