Drug Interaction Report

Using amantadine together with quiNIDine may increase the effects of amantadine. Contact your doctor if you experience blurred vision, severe headache, nausea, vomiting, anxiety, confusion, aggression, tremor, fast or uneven heart rate, trouble breathing, or seizure (convulsion). If your doctor does prescribe these medications together, you may need a dose adjustment or special test 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.