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Drug Interactions With Dextromethorphan and Quinidine

Paricalcitol
Dextromethorphan and quinidine may increase the amount of paricalcitol in your blood, which may increase your risk for side effects. Your healthcare provider may choose to monitor you parathyroid hormone, calcium, and phosphorus levels (with simple blood tests) if you take these medications together.
 
Pazopanib
Dextromethorphan and quinidine may increase pazopanib blood levels, which could increase the risk for potentially dangerous side effects. In general, these medications should not be used together. If a healthcare provider recommends you take pazopanib with dextromethorphan and quinidine, he or she may give you a lower pazopanib dose.
 
Quinidine
Dextromethorphan and quinidine contains quinidine, and should not be used in combination with quinidine or any other medications that contain quinidine.
 
SSRIs or SNRIs
Taking dextromethorphan and quinidine with an SSRI or SNRI medications can increase your risk for a serious reaction known as serotonin syndrome (see Precautions and Warnings With Dextromethorphan and Quinidine for more information, including symptoms of serotonin syndrome). Talk to your healthcare provider before taking these medications together. Call your healthcare provider right away if you have any symptoms of serotonin syndrome.
 
Salmeterol
Taking dextromethorphan and quinidine with salmeterol can raise the level of salmeterol in your blood, increasing your risk for serious side effects. In general, these medications should not be used together.
 
Saxagliptin
Combining dextromethorphan and quinidine and saxagliptin may raise the level of saxagliptin in your blood, increasing your risk for saxagliptin side effects and low blood sugar levels. Your healthcare provider may choose to monitor you more closely, and may give you a lower saxagliptin dose.
Know the Signs - Concussion Safety

Dextromethorphan and Quinidine Information

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