Interaction between Ziprasidone and Acetazolamide
Major
Synergy
| ID | DDInter1967 and DDInter15 |
| Interaction | 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 | |
| Alternative for Ziprasidone |
N05A
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| Alternative for Acetazolamide |
G01A
Sulfacetamide (ophthalmic)
Brinzolamide (ophthalmic)
Chloramphenicol (otic)
Oxyquinoline (topical)
Diiodohydroxyquinoline
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Potential Metabolism Interactions
Substrate-Substrate Interaction：If more than one drug is metabolized by the same CYP, it is possible that its metabolism is inhibited because of the competition between the drugs. That means, it can be useful to lower the dosage of the drugs in the drug-cocktail because they remain longer in the organism than in monotherapy.
Inhibitor-Inhibitor Interaction：Combining two or more inhibitors of one CYP, should be compensated by lowering the dosage of these drugs because the metabolism is reduced and the drugs remain longer in the organism than in monotherapy. Not adapting the dosage bears the risk of even more side effects.
Inhibitor-Substrate Interaction：Combining drugs that have inhibitory effect and are substrates of one particular CYP, should be compensated by lowering the dosage. They rest longer in the organism than in monotherapy. Not adapting the dosage bears the risk of even more side effects.