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Can You Take Nolvadex with Sodium phenylbutyrate?

This report displays the potential drug interactions for the following 2 drugs:

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Interactions between your drugs

Moderate

tamoxifen sodium phenylbutyrate

Applies to: Nolvadex (tamoxifen) and sodium phenylbutyrate

Sodium phenylbutyrate may reduce the blood levels of tamoxifen, which may make the medication less effective in some cases. Talk to your doctor if you have any questions or concerns. 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.

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.

Drug and food/lifestyle interactions

Moderate

tamoxifen food/lifestyle

Applies to: Nolvadex (tamoxifen)

Talk to your doctor before using tamoxifen with soy products. There is some evidence that substances present in soy may stimulate breast tumor growth and interfere with the action of tamoxifen, although this has not been proven. Whether soy products are effective for hot flashes is also uncertain. 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.

Moderate

sodium phenylbutyrate food/lifestyle

Applies to: sodium phenylbutyrate

Food may affect the absorption of sodium phenylbutyrate. A high-fat, high-calorie meal (approximately 800 to 1000 calories; 500 to 600 calories from fat, 250 calories from carbohydrate, 150 calories from protein) has been shown to reduce the absorption of sodium phenylbutyrate, although it is unknown what impact this may have on the overall effectiveness of the medication. The manufacturer recommends taking sodium phenylbutyrate before a meal or snack. This is especially important if you weigh less than 70 kg (approximately 154 pounds). Talk to your doctor or pharmacist if you have questions on how to take this or other medications you are prescribed. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medication without first talking to your doctor.

Disease interactions

Major

sodium phenylbutyrate Congestive Heart Failure

Applies to: Congestive Heart Failure

The use of sodium phenylbutyrate may cause fluid retention in patients with congestive heart failure, renal dysfunction, or sodium retention with edema. Sodium phenylbutyrate is primarily excreted by the kidney and these patients may exhibit reduced excretion. Therapy with sodium phenylbutyrate should be administered cautiously in these patients. Monitoring plasma levels of ammonia, arginine, branched-chain amino acids and serum proteins to maintain within normal limits and glutamine to less than 1000 mcmol/L is recommended.

Major

sodium phenylbutyrate Fluid Retention

Applies to: Fluid Retention

The use of sodium phenylbutyrate may cause fluid retention in patients with congestive heart failure, renal dysfunction, or sodium retention with edema. Sodium phenylbutyrate is primarily excreted by the kidney and these patients may exhibit reduced excretion. Therapy with sodium phenylbutyrate should be administered cautiously in these patients. Monitoring plasma levels of ammonia, arginine, branched-chain amino acids and serum proteins to maintain within normal limits and glutamine to less than 1000 mcmol/L is recommended.

Major

sodium phenylbutyrate Renal Dysfunction

Applies to: Renal Dysfunction

The use of sodium phenylbutyrate may cause fluid retention in patients with congestive heart failure, renal dysfunction, or sodium retention with edema. Sodium phenylbutyrate is primarily excreted by the kidney and these patients may exhibit reduced excretion. Therapy with sodium phenylbutyrate should be administered cautiously in these patients. Monitoring plasma levels of ammonia, arginine, branched-chain amino acids and serum proteins to maintain within normal limits and glutamine to less than 1000 mcmol/L is recommended.

Major

tamoxifen Thrombotic/Thromboembolic Disorder

Applies to: Thrombotic / Thromboembolic Disorder

The use of tamoxifen is contraindicated in women with a history of deep vein thrombosis or pulmonary embolus or in women who require concomitant coumarin- type anticoagulant therapy. There is evidence of an increased incidence of thromboembolic events, including deep vein thrombosis and pulmonary embolism, during tamoxifen therapy.

Moderate

tamoxifen Bleeding

Applies to: Bleeding

Hematological abnormalities during tamoxifen therapy may include thrombocytopenia, leukopenia, and anemia. Rare hemorrhagic episodes, severe neutropenia and pancytopenia have been reported. Therapy with tamoxifen should be administered cautiously to patients with or predisposed to bone marrow suppression.

Moderate

tamoxifen Bone Marrow Depression/Low Blood Counts

Applies to: Bone Marrow Depression/Low Blood Counts

Hematological abnormalities during tamoxifen therapy may include thrombocytopenia, leukopenia, and anemia. Rare hemorrhagic episodes, severe neutropenia and pancytopenia have been reported. Therapy with tamoxifen should be administered cautiously to patients with or predisposed to bone marrow suppression.

Moderate

sodium phenylbutyrate CNS Disorder

Applies to: CNS Disorder

Sodium phenylbutyrate is a pro-drug and is rapidly metabolized to the active, phenylacetate. Neurotoxicity, including exacerbation of a preexisting neuropathy, has been reported with the use of intravenous phenylacetate. The acute onset and reversibility when the phenylacetate infusion was discontinued suggested a drug effect. Care should be exercised when prescribing sodium phenylbutyrate to patients at risk for neurotoxicity.

Moderate

tamoxifen Endometrial Dysplasia

Applies to: Endometrial Dysplasia

Endometrial changes such as hyperplasia, polyps, and endometrial cancer have been reported during tamoxifen therapy. Patients should be instructed to immediately report any signs or symptoms of uterine abnormality such as menstrual irregularities, abnormal vaginal bleeding, change in vaginal discharge, or pelvic pain or pressure. Therapy with tamoxifen should be administered cautiously in patients with or history of gynecological abnormalities.

Moderate

tamoxifen Liver Disease

Applies to: Liver Disease

Tamoxifen is extensively metabolized by the liver and excreted in the feces. Alteration in liver enzyme levels have been noted. Severe hepatic injuries such as fatty liver, cholestasis, hepatitis, and hepatic necrosis are rare, however, deaths have been reported. Patients should be instructed to immediately report any sign or symptoms of hepatic dysfunction such as jaundice, dark urine, right upper quadrant pain, or anorexia. Therapy with tamoxifen should be administered cautiously in patients with or predisposed to compromised hepatic function.

Moderate

sodium phenylbutyrate Liver Disease

Applies to: Liver Disease

Sodium phenylbutyrate is primarily metabolized in the liver and kidney. Therapy with sodium phenylbutyrate should be administered cautiously in patients with liver disease. Monitoring plasma levels of ammonia, arginine, branched-chain amino acids and serum proteins to maintain within normal limits and glutamine to less than 1000 mcmol/L is recommended.

Moderate

sodium phenylbutyrate Myoneural Disorder

Applies to: Myoneural Disorder

Sodium phenylbutyrate is a pro-drug and is rapidly metabolized to the active, phenylacetate. Neurotoxicity, including exacerbation of a preexisting neuropathy, has been reported with the use of intravenous phenylacetate. The acute onset and reversibility when the phenylacetate infusion was discontinued suggested a drug effect. Care should be exercised when prescribing sodium phenylbutyrate to patients at risk for neurotoxicity.

Moderate

sodium phenylbutyrate Peripheral Neuropathy

Applies to: Peripheral Neuropathy

Sodium phenylbutyrate is a pro-drug and is rapidly metabolized to the active, phenylacetate. Neurotoxicity, including exacerbation of a preexisting neuropathy, has been reported with the use of intravenous phenylacetate. The acute onset and reversibility when the phenylacetate infusion was discontinued suggested a drug effect. Care should be exercised when prescribing sodium phenylbutyrate to patients at risk for neurotoxicity.

Moderate

sodium phenylbutyrate Renal Dysfunction

Applies to: Renal Dysfunction

Sodium phenylbutyrate is primarily metabolized in the liver and kidney. Therapy with sodium phenylbutyrate should be administered cautiously in patients with liver disease. Monitoring plasma levels of ammonia, arginine, branched-chain amino acids and serum proteins to maintain within normal limits and glutamine to less than 1000 mcmol/L is recommended.

Moderate

tamoxifen Visual Defect/Disturbance

Applies to: Visual Defect / Disturbance

Corneal changes, cataracts, and retinopathy have been reported during tamoxifen therapy. Therapy with tamoxifen should be administered cautiously in patients with or predisposed to visual disturbances.

Nolvadex

A total of 475 drugs are known to interact with Nolvadex.

sodium phenylbutyrate

A total of 38 drugs are known to interact with sodium phenylbutyrate.


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.