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Drug Interactions between irbesartan and Torisel

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

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Interactions between your drugs

Moderate

irbesartan temsirolimus

Applies to: irbesartan and Torisel (temsirolimus)

MONITOR: The use of mTOR (mammalian target of rapamycin) inhibitors has been associated with the development of angioedema, and coadministration with other drugs that are also known to cause angioedema such as ACE inhibitors, angiotensin II receptor antagonists, and renin inhibitors may increase the risk. In a pooled analysis of everolimus oncology clinical trials, the incidence of angioedema in patients taking everolimus with an ACE inhibitor was 6.8% compared to 1.3% in the control arm with an ACE inhibitor. The onset of angioedema may sometimes be delayed. According to the product labeling for temsirolimus, angioneurotic edema-type reactions have occurred two months after initiation of therapy in some patients who received concomitant ACE inhibitors.

MANAGEMENT: Clinicians and patients should be aware of the potential for increased risk of angioedema when mTOR inhibitors are prescribed with other drugs that are also known to cause angioedema. Patients should be advised to promptly discontinue these medications and seek medical attention if they develop signs or symptoms suggestive of angioedema such as swelling of the face, extremities, eyes, lips, or tongue, and difficulty swallowing or breathing.

References (3)
  1. (2001) "Product Information. Rapamune (sirolimus)." Wyeth-Ayerst Laboratories
  2. (2007) "Product Information. Torisel (temsirolimus)." Wyeth-Ayerst Laboratories
  3. (2009) "Product Information. Afinitor (everolimus)." Novartis Pharmaceuticals

Drug and food interactions

Moderate

irbesartan food

Applies to: irbesartan

GENERALLY AVOID: Moderate-to-high dietary intake of potassium, especially salt substitutes, may increase the risk of hyperkalemia in some patients who are using angiotensin II receptor blockers (ARBs). ARBs can promote hyperkalemia through inhibition of angiotensin II-induced aldosterone secretion. Patients with diabetes, heart failure, dehydration, or renal insufficiency have a greater risk of developing hyperkalemia.

MANAGEMENT: Patients should receive dietary counseling and be advised to not use potassium-containing salt substitutes or over-the-counter potassium supplements without consulting their physician. If salt substitutes are used concurrently, regular monitoring of serum potassium levels is recommended. Patients should also be advised to seek medical attention if they experience symptoms of hyperkalemia such as weakness, irregular heartbeat, confusion, tingling of the extremities, or feelings of heaviness in the legs.

References (2)
  1. (2001) "Product Information. Cozaar (losartan)." Merck & Co., Inc
  2. (2001) "Product Information. Diovan (valsartan)." Novartis Pharmaceuticals
Moderate

temsirolimus food

Applies to: Torisel (temsirolimus)

GENERALLY AVOID: Coadministration of temsirolimus with grapefruit juice may increase the plasma concentrations of sirolimus, a major active metabolite of temsirolimus and known substrate of CYP450 3A4. The proposed mechanism is inhibition of CYP450 3A4-mediated metabolism by certain compounds present in grapefruits.

MANAGEMENT: Patients treated with temsirolimus should preferably avoid the consumption of grapefruit or grapefruit juice.

References (1)
  1. (2007) "Product Information. Torisel (temsirolimus)." Wyeth-Ayerst Laboratories

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.

See also

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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.

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