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Can you take Amprenavir with Sodium phenylbutyrate / taurursodiol?

1 drug interaction and 22 additional warnings found for the following 2 drugs:

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Drug interactions

Moderate drug interactions

Moderate:

amprenavir taurursodiol

Applies to: amprenavir and sodium phenylbutyrate / taurursodiol

Taurursodiol may alter the blood levels and effects of amprenavir. 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. Contact your doctor if your condition changes or you experience increased side effects. 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:

sodium phenylbutyrate Food/Lifestyle

Applies to: sodium phenylbutyrate / taurursodiol

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.

Moderate:

amprenavir Food/Lifestyle

Applies to: amprenavir

Amprenavir can be taken with or without food. Avoid taking with a high-fat meal, which can make it harder for your body to absorb amprenavir. Take amprenavir with a full glass (8 ounces) of water. Do not switch from amprenavir capsules to oral liquid without your doctor's advice. Make sure you receive the right form of this medication each time you get your prescription filled.

Disease interactions

20 potential interactions Applies to: 16 conditions, including Heart Failure, Peripheral Neuropathy, Nephrolithiasis, Diabetes Mellitus, and Gallbladder Disease.

Abnormal Glucose Tolerance

Moderate:

amprenavir

Amprenavir has a moderate potential interaction with Abnormal Glucose Tolerance.

New onset diabetes mellitus, exacerbation of preexisting diabetes mellitus, hyperglycemia, and some cases of diabetic ketoacidosis have been reported during postmarketing surveillance in HIV-infected patients treated with protease inhibitors. Some patients required either initiation or dosage adjustments of insulin or oral hypoglycemic agents for treatment of these events. In some cases, hyperglycemia persisted despite discontinuation of protease inhibitor therapy. A causal relationship has not been established between protease inhibitor therapy and these events. Monitoring patients for hyperglycemia, new onset diabetes mellitus, or exacerbation of diabetes mellitus should be considered during protease inhibitor therapy.

Biliary Obstruction

Moderate:

sodium phenylbutyrate / taurursodiol

The taurursodiol in sodium phenylbutyrate / taurursodiol has a moderate potential interaction with Biliary Obstruction.

Sodium phenylbutyrate-taurursodiol contains taurursodiol, a bile acid. In patients with disorders that interfere with bile acid circulation, there may be an increased risk for diarrhea and patients should be monitored appropriately. Other conditions such as pancreatic insufficiency, intestinal malabsorption, or intestinal diseases that may alter the concentration of bile acids, may also lead to decreased absorption of this drug and its components. Consider consulting with a GI specialists with experience managing these GI disorders. Patients with disorders of enterohepatic circulation (e.g., biliary infection, active cholecystitis, etc.), severe pancreatic disorders (e.g., pancreatitis), and intestinal disorders that may alter concentrations of bile acids (e.g., ileal resection, regional ileitis, etc.) were excluded from clinical studies and there is no experience in patients with these conditions. Caution is advised.

Central Nervous System Disorders

Moderate:

sodium phenylbutyrate / taurursodiol

The sodium phenylbutyrate in sodium phenylbutyrate / taurursodiol has a moderate potential interaction with Central Nervous System Disorders.

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.

Dehydration

Moderate:

amprenavir

Amprenavir has a moderate potential interaction with Dehydration.

Cases of nephrolithiasis have been reported during postmarketing surveillance in HIV-infected patients receiving amprenavir or fosamprenavir therapy. Because these events were reported voluntarily during clinical practice, estimates of frequency cannot be made. Therapy with amprenavir or fosamprenavir should be administered cautiously in patients with a current or past history of nephrolithiasis. Adequate hydration is recommended. Those who are dehydrated may be at increased risk and should be encouraged to consume additional amounts of liquid or given intravenous fluids if necessary. Patients should be instructed to seek medical attention if they experience potential signs and symptoms of urolithiasis such as flank pain, hematuria, dysuria, and urinary urgency. Temporary interruption or discontinuation of therapy may be required.

Diabetes Mellitus

Moderate:

amprenavir

Amprenavir has a moderate potential interaction with Diabetes Mellitus.

New onset diabetes mellitus, exacerbation of preexisting diabetes mellitus, hyperglycemia, and some cases of diabetic ketoacidosis have been reported during postmarketing surveillance in HIV-infected patients treated with protease inhibitors. Some patients required either initiation or dosage adjustments of insulin or oral hypoglycemic agents for treatment of these events. In some cases, hyperglycemia persisted despite discontinuation of protease inhibitor therapy. A causal relationship has not been established between protease inhibitor therapy and these events. Monitoring patients for hyperglycemia, new onset diabetes mellitus, or exacerbation of diabetes mellitus should be considered during protease inhibitor therapy.

Fluid Retention

Major:

sodium phenylbutyrate / taurursodiol

The sodium phenylbutyrate in sodium phenylbutyrate / taurursodiol has a major potential interaction with 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.

Gallbladder Disease

Moderate:

sodium phenylbutyrate / taurursodiol

The taurursodiol in sodium phenylbutyrate / taurursodiol has a moderate potential interaction with Gallbladder Disease.

Sodium phenylbutyrate-taurursodiol contains taurursodiol, a bile acid. In patients with disorders that interfere with bile acid circulation, there may be an increased risk for diarrhea and patients should be monitored appropriately. Other conditions such as pancreatic insufficiency, intestinal malabsorption, or intestinal diseases that may alter the concentration of bile acids, may also lead to decreased absorption of this drug and its components. Consider consulting with a GI specialists with experience managing these GI disorders. Patients with disorders of enterohepatic circulation (e.g., biliary infection, active cholecystitis, etc.), severe pancreatic disorders (e.g., pancreatitis), and intestinal disorders that may alter concentrations of bile acids (e.g., ileal resection, regional ileitis, etc.) were excluded from clinical studies and there is no experience in patients with these conditions. Caution is advised.

Heart Failure

Major:

sodium phenylbutyrate / taurursodiol

The sodium phenylbutyrate in sodium phenylbutyrate / taurursodiol has a major potential interaction with 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.

History, Nephrolithiasis

Moderate:

amprenavir

Amprenavir has a moderate potential interaction with History, Nephrolithiasis.

Cases of nephrolithiasis have been reported during postmarketing surveillance in HIV-infected patients receiving amprenavir or fosamprenavir therapy. Because these events were reported voluntarily during clinical practice, estimates of frequency cannot be made. Therapy with amprenavir or fosamprenavir should be administered cautiously in patients with a current or past history of nephrolithiasis. Adequate hydration is recommended. Those who are dehydrated may be at increased risk and should be encouraged to consume additional amounts of liquid or given intravenous fluids if necessary. Patients should be instructed to seek medical attention if they experience potential signs and symptoms of urolithiasis such as flank pain, hematuria, dysuria, and urinary urgency. Temporary interruption or discontinuation of therapy may be required.

Liver Disease

Major:

amprenavir

Amprenavir has a major potential interaction with Liver Disease.

The use of amprenavir oral solution is contraindicated in patients with renal and/or hepatic failure due to the large amount of excipient propylene glycol in the formulation. In general, use of the solution should be limited to patients in whom the capsule formulation or other protease inhibitors are not feasible options. Caution is advised in patients with renal or hepatic impairment due to increased risk of propylene glycol-associated adverse events. All patients receiving the oral solution should be monitored for signs of propylene glycol toxicity including seizures, stupor, tachycardia, hyperosmolality, lactic acidosis, renal toxicity, and hemolysis.

Moderate:

amprenavir

Amprenavir has a moderate potential interaction with Liver Disease.

Amprenavir is primarily metabolized by the liver. Patients with liver disease may be at greater risk for adverse effects from amprenavir due to decreased drug clearance. Therapy with amprenavir should be administered cautiously in patients with moderate or severe hepatic impairment, and the dosage should be reduced as follows: 450 mg (three 150 mg capsules) or 513 mg (34 mL oral solution) orally twice a day for Child-Pugh score 5 to 8; 300 mg (two 150 mg capsules) or 342 mg (23 mL oral solution) orally twice a day for Child-Pugh score 9 to 12.

Moderate:

sodium phenylbutyrate / taurursodiol

The sodium phenylbutyrate in sodium phenylbutyrate / taurursodiol has a moderate potential interaction with 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.

Malabsorption Syndrome

Moderate:

sodium phenylbutyrate / taurursodiol

The taurursodiol in sodium phenylbutyrate / taurursodiol has a moderate potential interaction with Malabsorption Syndrome.

Sodium phenylbutyrate-taurursodiol contains taurursodiol, a bile acid. In patients with disorders that interfere with bile acid circulation, there may be an increased risk for diarrhea and patients should be monitored appropriately. Other conditions such as pancreatic insufficiency, intestinal malabsorption, or intestinal diseases that may alter the concentration of bile acids, may also lead to decreased absorption of this drug and its components. Consider consulting with a GI specialists with experience managing these GI disorders. Patients with disorders of enterohepatic circulation (e.g., biliary infection, active cholecystitis, etc.), severe pancreatic disorders (e.g., pancreatitis), and intestinal disorders that may alter concentrations of bile acids (e.g., ileal resection, regional ileitis, etc.) were excluded from clinical studies and there is no experience in patients with these conditions. Caution is advised.

Myoneural Disorder

Moderate:

sodium phenylbutyrate / taurursodiol

The sodium phenylbutyrate in sodium phenylbutyrate / taurursodiol has a moderate potential interaction with 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.

Nephrolithiasis

Moderate:

amprenavir

Amprenavir has a moderate potential interaction with Nephrolithiasis.

Cases of nephrolithiasis have been reported during postmarketing surveillance in HIV-infected patients receiving amprenavir or fosamprenavir therapy. Because these events were reported voluntarily during clinical practice, estimates of frequency cannot be made. Therapy with amprenavir or fosamprenavir should be administered cautiously in patients with a current or past history of nephrolithiasis. Adequate hydration is recommended. Those who are dehydrated may be at increased risk and should be encouraged to consume additional amounts of liquid or given intravenous fluids if necessary. Patients should be instructed to seek medical attention if they experience potential signs and symptoms of urolithiasis such as flank pain, hematuria, dysuria, and urinary urgency. Temporary interruption or discontinuation of therapy may be required.

Peripheral Neuropathy

Moderate:

sodium phenylbutyrate / taurursodiol

The sodium phenylbutyrate in sodium phenylbutyrate / taurursodiol has a moderate potential interaction with 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.

Renal Dysfunction

Major:

amprenavir

Amprenavir has a major potential interaction with Renal Dysfunction.

The use of amprenavir oral solution is contraindicated in patients with renal and/or hepatic failure due to the large amount of excipient propylene glycol in the formulation. In general, use of the solution should be limited to patients in whom the capsule formulation or other protease inhibitors are not feasible options. Caution is advised in patients with renal or hepatic impairment due to increased risk of propylene glycol-associated adverse events. All patients receiving the oral solution should be monitored for signs of propylene glycol toxicity including seizures, stupor, tachycardia, hyperosmolality, lactic acidosis, renal toxicity, and hemolysis.

Major:

sodium phenylbutyrate / taurursodiol

The sodium phenylbutyrate in sodium phenylbutyrate / taurursodiol has a major potential interaction with 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.

Moderate:

sodium phenylbutyrate / taurursodiol

The sodium phenylbutyrate in sodium phenylbutyrate / taurursodiol has a moderate potential interaction with 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.

Vitamin K Deficiency

Minor:

amprenavir

Amprenavir has a minor potential interaction with Vitamin K Deficiency.

Formulations of Agenerase (brand of amprenavir) provide high daily doses of vitamin E exceeding the Reference Daily Intake (adults 30 Intl units, pediatrics approximately 10 Intl units). The effects of long-term, high-dose vitamin E administration in humans are unclear. High levels of vitamin E may exacerbate the blood coagulation defect of vitamin K deficiency caused by anticoagulant therapy or malabsorption.

More resources

amprenavir

A total of 570 drugs are known to interact with amprenavir.

sodium phenylbutyrate / taurursodiol

A total of 590 drugs are known to interact with sodium phenylbutyrate / taurursodiol.

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.