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Drug interactions between Advair Diskus and diltiazem

Results for the following 2 drugs:
Advair Diskus (fluticasone/salmeterol)
diltiazem

Interactions between your drugs

Moderate

diltiazem ↔ fluticasone

Applies to:diltiazem and Advair Diskus (fluticasone/salmeterol)

Consumer information for this interaction is not currently available.

MONITOR: Coadministration with moderate inhibitors of CYP450 3A4 may increase the systemic exposure to fluticasone following intranasal administration or oral inhalation. Fluticasone undergoes extensive first-pass and systemic metabolism via CYP450 3A4, thus inhibition of the isoenzyme may significantly increase systemic bioavailability of the drug. However, the extent of interaction may depend on the route of fluticasone administration and the specific formulation. Multiple case reports describe instances of adrenal insufficiency and Cushing's syndrome associated with concomitant use of inhaled fluticasone and the azole antifungal fluconazole, a moderate CYP450 3A4 inhibitor.

MANAGEMENT: Monitor for signs and symptoms of hypercorticism if intranasal or orally inhaled fluticasone is coadministered with a moderate inhibitor of CYP450 3A4. Signs and symptoms of hypercorticism include acne, striae, thinning of the skin, easy bruising, moon facies, dorsocervical "buffalo" hump, truncal obesity, increased appetite, acute weight gain, edema, hypertension, hirsutism, hyperhidrosis, proximal muscle wasting and weakness, glucose intolerance, exacerbation of preexisting diabetes, depression, and menstrual disorders. Other systemic glucocorticoid effects may include adrenal suppression, immunosuppression, posterior subcapsular cataracts, glaucoma, bone loss, and growth retardation in children and adolescents. Signs and symptoms of adrenal insufficiency include anorexia, hypoglycemia, nausea, vomiting, weight loss, muscle wasting, fatigue, weakness, dizziness, postural hypotension, depression, and adrenal crisis manifested as inability to respond to stress (e.g., illness, infection, surgery, trauma). Systemic glucocorticoids may be necessary until adrenal function recovers.

References

  1. "Product Information. Prezista (darunavir)." Ortho Biotech Inc, Bridgewater, NJ.
  2. St Clair K, Maguire JD "Role of fluconazole in a case of rapid onset ritonavir and inhaled fluticasone-associated secondary adrenal insufficiency." Int J STD AIDS 23 (2012): 371-2
  3. Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0
  4. Cerner Multum, Inc. "Australian Product Information." O 0
  5. Hoover WC, Britton LJ, Gardner J, Jackson T, Gutierrez H "Rapid onset of iatrogenic adrenal insufficiency in a patient with cystic fibrosis-related liver disease treated with inhaled corticosteroids and a moderate CYP3A4 inhibitor." Ann Pharmacother 45 (2011): e38
  6. "Product Information. Bosulif (bosutinib)." Pfizer U.S. Pharmaceuticals Group, New York, NY.
  7. "Product Information. Imbruvica (ibrutinib)." Pharmacyclics Inc, Sunnyvale, CA.
View all 7 references

Drug and food interactions

Moderate

diltiazem food

Applies to: diltiazem

Alcohol can lower your blood pressure and add to the effects of dilTIAZem. You may experience dizziness, lightheadedness, fainting, or a rapid heartbeat if you drink alcohol with dilTIAZem, especially when you first start taking the medication or just after a dose increase. Grapefruit juice may also increase the effects of dilTIAZem in some people by increasing its levels in the blood. You may want to limit alcohol intake and avoid excessive consumption of grapefruit and grapefruit juice during treatment with dilTIAZem. However, if you have been regularly consuming grapefruit or grapefruit juice with dilTIAZem, do not alter the amounts of these products in your diet without first talking to your doctor or other healthcare professional. Contact your doctor if your condition changes or you experience increased side effects of dilTIAZem such as headache, irregular heartbeat, swelling, unexplained weight gain, or chest pain. Orange juice is not expected to interact.

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Therapeutic duplication warnings

No therapeutic duplications were found for your selected drugs.

Drug Interaction Classification

The classifications below are a guideline only. The relevance of a particular drug interaction to a specific patient is difficult to determine using this tool alone given the large number of variables that may apply.
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 information available.

Do not stop taking any medications without consulting your healthcare provider.

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