Azithromycin Oral Suspension and Mifepristone Tablets
Determining the interaction of Azithromycin Oral Suspension and Mifepristone Tablets and the possibility of their joint administration.
In the database of official manuals used in the service creation an interaction registered by statistical results of studies was found, which can either lead to negative consequences for the patient health or strengthen a mutual positive effect. A doctor should be consulted to address the issue of joint drug administration.
Consumer:Using miFEPRIStone together with azithromycin can increase the risk of an irregular heart rhythm that may be serious and potentially life-threatening, although it is a relatively rare side effect. You may be more susceptible if you have a heart condition called congenital long QT syndrome, other cardiac diseases, conduction abnormalities, or electrolyte disturbances (for example, magnesium or potassium loss due to severe or prolonged diarrhea or vomiting). Chronic treatment with miFEPRIStone itself may also cause low potassium levels. Talk to your doctor if you have any questions or concerns. Your doctor may already be aware of the risks, but has determined that this is the best course of treatment for you and has taken appropriate precautions and is monitoring you closely for any potential complications. You should seek immediate medical attention if you develop sudden dizziness, lightheadedness, fainting, shortness of breath, or heart palpitations during treatment with these medications, whether together or alone. In addition, you should let your doctor know if you experience signs of low potassium such as nausea, vomiting, constipation, abdominal cramping, confusion, dizziness, lightheadedness, fainting, muscle weakness, muscle cramps, numbness or tingling, rapid heart beat, chest pain, and/or swelling in the legs or feet. Because miFEPRIStone can stay in your blood for a prolonged period after the last dose, interactions with other drugs may occur for some time even after you have stopped taking it. 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.
Professional:GENERALLY AVOID: Mifepristone may prolong the QTc interval in a dose-related manner. Theoretically, coadministration with other agents that can prolong the QT interval may result in additive effects and increased risk of ventricular arrhythmias including torsade de pointes and sudden death. Mifepristone and its metabolites have been found to inhibit the hERG-encoded cardiac potassium channels responsible for the rapid delayed rectifier K+ (IKr) repolarizing current. However, there is little or no experience with high exposure, concomitant dosing with other QT-prolonging drugs, or potassium channel variants resulting in a long QT interval. In general, the risk of an individual agent or a combination of agents causing ventricular arrhythmia in association with QT prolongation is largely unpredictable but may be increased by certain underlying risk factors such as congenital long QT syndrome, cardiac disease, and electrolyte disturbances (e.g., hypokalemia, hypomagnesemia). Since mifepristone can commonly cause hypokalemia during prolonged use, this should also be considered during coadministration with other QT-prolonging drugs. In a study of patients with Cushing's syndrome, hypokalemia was observed in 44% of subjects treated with mifepristone. The hypokalemia responded to treatment with potassium supplementation and/or mineralocorticoid antagonist therapy (e.g., spironolactone or eplerenone).
MANAGEMENT: When mifepristone is used daily to control hyperglycemia secondary to hypercortisolism in patients with endogenous Cushing's syndrome, coadministration with other drugs that can prolong the QT interval should generally be avoided. Caution is recommended if no alternatives exist and concomitant use is required. Serum potassium should be assessed prior to starting mifepristone and 1 to 2 weeks following initiation of therapy or an increase in dosage, and periodically as needed. Hypokalemia must be corrected prior to initiation of mifepristone. Patients should be advised to seek medical attention if they experience potential signs and symptoms of hypokalemia such as fatigue, weakness, myalgia, muscle cramps, numbness, tingling, abdominal pain, constipation, palpitation, and irregular heart rhythm. Because mifepristone is eliminated slowly from the body, drug interactions may be observed for a prolonged period following discontinuation (approximately 2 to 3 weeks if mifepristone had been administered chronically to steady state).
- "Product Information. Korlym (mifepristone)." Corcept Therapeutics Incorporated, Menlo Park, CA.
- Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0
- Cerner Multum, Inc. "Australian Product Information." O 0
- Canadian Pharmacists Association "e-CPS. Available from: URL: http://www.pharmacists.ca/function/Subscriptions/ecps.cfm?link=eCPS_quikLink."
Generic Name: azithromycin
Brand name: AzaSite, Azithromycin 3 Day Dose Pack, Azithromycin 5 Day Dose Pack, Zithromax, Zithromax Tri-Pak, Zithromax Z-Pak, Zmax, Zithromax IV
Synonyms: Azithromycin, Azithromycin (Systemic)
Generic Name: mifepristone
Brand name: Korlym, Mifeprex
Synonyms: Mifepristone
In the course of checking the drug compatibility and interactions, data from the following reference sources was used: Drugs.com, Rxlist.com, Webmd.com, Medscape.com.
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