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Drug Interactions between Geodon and patiromer

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

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Interactions between your drugs

Major

ziprasidone patiromer

Applies to: Geodon (ziprasidone) and patiromer

MONITOR CLOSELY: Ziprasidone can cause dose-related prolongation of the QT interval. While clinical data are lacking, the coadministration of ziprasidone and agents that can produce hypokalemia and/or hypomagnesemia (e.g., potassium-wasting diuretics, amphotericin B, cation exchange resins) may result in elevated risk of ventricular arrhythmias, including ventricular tachycardia and torsade de pointes, because of additive arrhythmogenic potential.

MANAGEMENT: Caution is advised when ziprasidone must be used concomitantly with medications that can cause potassium and/or magnesium disturbances. Serum electrolytes should be monitored and any abnormalities corrected prior to initiating therapy with ziprasidone. Patients should be advised to notify their physician if they experience possible signs of an electrolyte imbalance, such as weakness, lethargy, drowsiness, confusion, muscle pains or cramps, dizziness, nausea, vomiting, tachycardia, or an irregular heartbeat.

References (1)
  1. (2001) "Product Information. Geodon (ziprasidone)." Pfizer U.S. Pharmaceuticals

Drug and food interactions

Moderate

ziprasidone food

Applies to: Geodon (ziprasidone)

GENERALLY AVOID: Alcohol may potentiate some of the pharmacologic effects of CNS-active agents. Use in combination may result in additive central nervous system depression and/or impairment of judgment, thinking, and psychomotor skills.

MANAGEMENT: Patients receiving CNS-active agents should be warned of this interaction and advised to avoid or limit consumption of alcohol. Ambulatory patients should be counseled to avoid hazardous activities requiring complete mental alertness and motor coordination until they know how these agents affect them, and to notify their physician if they experience excessive or prolonged CNS effects that interfere with their normal activities.

References (4)
  1. Warrington SJ, Ankier SI, Turner P (1986) "Evaluation of possible interactions between ethanol and trazodone or amitriptyline." Neuropsychobiology, 15, p. 31-7
  2. Gilman AG, eds., Nies AS, Rall TW, Taylor P (1990) "Goodman and Gilman's the Pharmacological Basis of Therapeutics." New York, NY: Pergamon Press Inc.
  3. (2012) "Product Information. Fycompa (perampanel)." Eisai Inc
  4. (2015) "Product Information. Rexulti (brexpiprazole)." Otsuka American Pharmaceuticals Inc
Moderate

patiromer food

Applies to: patiromer

ADJUST DOSING INTERVAL: Patiromer can bind to some orally administered drugs, which may decrease their gastrointestinal absorption and reduce their effectiveness. According to the manufacturer, out of 28 drugs that were tested in in vitro binding studies, 14 did not show an interaction with patiromer (acetylsalicylic acid, allopurinol, amoxicillin, apixaban, atorvastatin, cephalexin, digoxin, glipizide, lisinopril, phenytoin, riboflavin, rivaroxaban, spironolactone, and valsartan). Twelve of the 14 drugs that did show an in vitro interaction were subsequently tested in in vivo studies with healthy volunteers, which revealed no changes in systemic exposure when coadministered with patiromer (amlodipine, cinacalcet, clopidogrel, furosemide, lithium, metoprolol, trimethoprim, verapamil, and warfarin). Patiromer was found to decrease systemic exposure of coadministered ciprofloxacin, levothyroxine, and metformin. However, no significant interaction occurred when patiromer and these drugs were dosed 3 hours apart.

MANAGEMENT: Patiromer should be administered with food at least 3 hours before or 3 hours after other oral medications. Alternatives to patiromer or the other medications should be considered if adequate dosing separation is not possible. Otherwise, clinical response and/or blood levels should be monitored where possible.

References (1)
  1. (2015) "Product Information. Veltassa (patiromer)." Relypsa, Inc.

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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