Drug Interaction Report

QuiNIDine may increase the blood levels of dalfampridine. This may increase the risk and/or severity of side effects such as nausea, insomnia, dizziness, weakness, headache, confusion, and seizures. Contact your doctor if your condition changes or you experience increased side effects during treatment with these medications. Your doctor may be able to prescribe alternatives that do not interact, or you may need a dose adjustment or more frequent monitoring to safely use both medications. 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.

Do not consume grapefruit or grapefruit juice during treatment with quiNIDine unless specifically directed otherwise by your doctor. Grapefruit and grapefruit juice can interact with quiNIDine and increase the levels of quiNIDine in your body. If you are already consuming grapefruit products, do not increase or decrease the amount of these products in your diet without first talking to your doctor.