Drug Interaction Report

Using arsenic trioxide together with patiromer can increase the risk of an irregular heart rhythm that may be serious. If your doctor prescribes these medications together, you may need regular monitoring of your electrolyte (magnesium, potassium) levels as well as other tests to safely use both medications. You should seek immediate medical attention if you develop sudden dizziness, lightheadedness, fainting, or fast or pounding heartbeats during treatment with arsenic trioxide. In addition, you should let your doctor know if you experience signs of electrolyte disturbance such as weakness, tiredness, drowsiness, confusion, muscle pain, cramps, dizziness, nausea, or vomiting. 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.

Patiromer may bind to many different oral medications in the gastrointestinal tract and reduce their absorption into the blood stream. The effectiveness of some oral medications may be decreased when taken with patiromer. To minimize the possibility of interaction, it is recommended that you separate the dosing times of patiromer and any oral medication you take by at least three hours. Talk to your doctor if you are unable to do so or if you have other questions or concerns. Your doctor may be able to prescribe alternatives that do not interact. 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.