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Medications that can cause an irregular heartbeat (QT interval-prolonging drugs)
Interaction Rating: Major Do not take this combination.
Some forms of arsenic might cause an abnormal heartbeat. Taking arsenic along with other medications that can cause an irregular heartbeat might cause serious side effects including heart arrhythmias.
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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