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Can you take Amprenavir with Caltrate 600+D?

1 drug interaction and 26 additional warnings found for the following 2 drugs:

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Drug interactions

Moderate drug interactions

Moderate:

calcium carbonate amprenavir

Applies to: Caltrate 600+D (calcium / vitamin d) and amprenavir

Using calcium carbonate together with amprenavir may decrease the effects of amprenavir. Amprenavir should be administered at least 1 hour before or after calcium carbonate. If your doctor does prescribe these medications together, you may need a dose adjustment or special test 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

Moderate food/lifestyle interactions

Moderate:

calcium carbonate Food/Lifestyle

Applies to: Caltrate 600+D (calcium / vitamin d)

Calcium absorption may be increased by taking it with food. However, foods high in oxalic acid (spinach or rhubarb), or phytic acid (bran and whole grains) may decrease calcium absorption. Calcium may be taken with food to increase absorption. Consider spacing calcium administration for at least 2 hours before or after consuming foods high in oxalic acid or phytic acid. Talk to your doctor if you have any questions or concerns. 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:

ergocalciferol Food/Lifestyle

Applies to: Caltrate 600+D (calcium / vitamin d)

Treatment with ergocalciferol may require you to adjust your dietary intake of foods which contain natural or added calcium, phosphate (organic and inorganic), and vitamin D or grapefruit. Ingesting too much vitamin D or having elevated calcium and/or phosphorus levels in the blood and urine can lead to toxic effects, such as having an irregular heart rhythm, seizures, kidney stones, and eventual calcification of your blood vessels, cornea and/or the soft tissues in your body. Consumption of grapefruit and grapefruit juice may also alter the blood levels and effects of ergocalciferol. Your doctor will monitor the levels of calcium and phosphorus in your blood during treatment with ergocalciferol. Please speak with your healthcare team to determine if you require a specialized diet, particularly if you have reduced kidney function, and to discuss any other questions or concerns you have. You may require additional monitoring or a dose adjustment of ergocalciferol if your diet changes. Fortified foods will state on their labeling how much calcium, phosphate, and/or vitamin D has been added. The National Institutes of Health, Office of Dietary Supplements also provides information on which foods contain calcium, phosphorus, and vitamin D. You should avoid abrupt changes in your dietary calcium intake and seek medical attention if you experience early symptoms of vitamin D intoxication such as weakness, fatigue, headache, drowsiness, vertigo, ringing in the ears, loss of appetite, nausea, vomiting, constipation, dry mouth, metallic taste, muscle pain, bone pain, muscle incoordination, and low muscle tone. Late symptoms may include frequent urination, excessive thirst, weight loss, conjunctivitis ("pink eye"), light sensitivity, runny nose, itching, increased body temperature, and irregular heart rhythm. 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:

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

23 potential interactions Applies to: 16 conditions, including Arrhythmia, Nephrolithiasis, Diabetes Mellitus, Tachyarrhythmia, and Sarcoidosis.

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.

Achlorhydria

Major:

Caltrate 600+D

The calcium carbonate in Caltrate 600+D 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:

Caltrate 600+D

The calcium carbonate in Caltrate 600+D 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:

Caltrate 600+D

The ergocalciferol in Caltrate 600+D has a moderate potential interaction with Arrhythmia.

Vitamin D analogs function to increase serum calcium concentrations and can exacerbate arrhythmias, particularly in patients receiving cardiac glycosides. Therapy with vitamin D analogs should be administered cautiously in patients with or predisposed to cardiac arrhythmias. Clinical monitoring of serum electrolyte concentrations and cardiac function is recommended.

Biliary Obstruction

Moderate:

Caltrate 600+D

The ergocalciferol in Caltrate 600+D has a moderate potential interaction with Biliary Obstruction.

Vitamin D analogs are fat soluble and oral formulations require bile for adequate intestinal absorption. Hepatic and/or biliary dysfunction decrease the absorption of vitamin D analogs. Metabolites of vitamin D analogs are primarily excreted in bile and feces. Ergocalciferol, cholecalciferol, and dihydrotachysterol undergo hepatic hydroxylation during metabolic activation. Hepatic impairment can alter the metabolic and therapeutic activity of certain vitamin D analogs. Alternative vitamin D analogs such as calcitriol (active form) may be considered in patients with compromised hepatic function.

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.

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.

Hypercalcemia

Major:

Caltrate 600+D

The ergocalciferol in Caltrate 600+D has a major potential interaction with Hypercalcemia.

Vitamin D analogs such as calciferol and ergocalciferol should not be given to patients with hypercalcemia, malabsorption syndrome, or evidence of vitamin D toxicity.

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:

Caltrate 600+D

The ergocalciferol in Caltrate 600+D has a moderate potential interaction with Liver Disease.

Vitamin D analogs are fat soluble and oral formulations require bile for adequate intestinal absorption. Hepatic and/or biliary dysfunction decrease the absorption of vitamin D analogs. Metabolites of vitamin D analogs are primarily excreted in bile and feces. Ergocalciferol, cholecalciferol, and dihydrotachysterol undergo hepatic hydroxylation during metabolic activation. Hepatic impairment can alter the metabolic and therapeutic activity of certain vitamin D analogs. Alternative vitamin D analogs such as calcitriol (active form) may be considered in patients with compromised hepatic function.

Malabsorption Syndrome

Major:

Caltrate 600+D

The calcium carbonate in Caltrate 600+D 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.

Major:

Caltrate 600+D

The ergocalciferol in Caltrate 600+D has a major potential interaction with Malabsorption Syndrome.

Vitamin D analogs such as calciferol and ergocalciferol should not be given to patients with hypercalcemia, malabsorption syndrome, or evidence of vitamin D toxicity.

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.

Phosphate Imbalance

Major:

Caltrate 600+D

The calcium carbonate in Caltrate 600+D 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.

Moderate:

Caltrate 600+D

The ergocalciferol in Caltrate 600+D has a moderate potential interaction with Phosphate Imbalance.

Vitamin D analogs administered in the presence of hyperphosphatemia can result in precipitation of calcium-phosphate deposits within the vascular or renal systems or other soft tissue calcifications. A solubility product (Serum Calcium X Phosphate) should not exceed 70. Serum electrolyte concentrations should be corrected prior to vitamin D analog therapy and monitored during therapy.

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:

Caltrate 600+D

The calcium carbonate in Caltrate 600+D 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.

Moderate:

Caltrate 600+D

The ergocalciferol in Caltrate 600+D has a moderate potential interaction with Renal Dysfunction.

Ergocalciferol and cholecalciferol undergo renal biotransformation during metabolic activation. Renal impairment can alter metabolic and therapeutic activity of certain vitamin D analogs. Alternative vitamin D analogs such as dihydrotachysterol (hepatic activation) and calcitriol (active form) may be considered in patients with compromised renal function.

Sarcoidosis

Major:

Caltrate 600+D

The calcium carbonate in Caltrate 600+D 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.

Tachyarrhythmia

Major:

Caltrate 600+D

The ergocalciferol in Caltrate 600+D has a major potential interaction with Tachyarrhythmia.

The amine ergot alkaloids, ergonovine and methylergonovine, can cause serious cardiovascular complications because of their vasospastic effects. Hypertension (more often with ergonovine) has been most commonly reported, particularly when administered IV undiluted or at an excessive rate or when used in conjunction with regional anesthesia or vasoconstrictors. Headaches, seizures, cerebrovascular accidents and death have been associated with the hypertensive episodes. Other, less common adverse effects include acute myocardial infarction, transient chest pains, thrombophlebitis, tachycardia and palpitations. Therapy with ergot alkaloids should generally be avoided, except under special circumstances, in patients with chronic hypertension, preeclampsia or eclampsia, cardiovascular disease, cerebrovascular disease, or peripheral vascular disease. Caution is advised when these agents are administered to patients with venoatrial shunts, mitral valve stenosis, or sepsis. Close monitoring of cardiovascular status is highly recommended during therapy.

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.

Caltrate 600+D

A total of 310 drugs are known to interact with Caltrate 600+D.

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.