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Am I Taking Products That React With Calan SR?

Lithium (Eskalith, Eskalith CR, Lithobid)
Lithium can interact unpredictably with Calan SR. Sometimes Calan SR can make lithium less effective; other times it can increase lithium toxicity. You should be monitored very carefully when you are taking these two medications together.
 
Phenobarbital (Luminal)
Phenobarbital may decrease the level of Calan SR in your blood, perhaps making it less effective. Your healthcare provider may need to increase your Calan SR dosage.
 
Quinidine
Calan SR can increase the level of quinidine in your blood, increasing your risk of side effects. Combining these two medications may also increase your risk of low blood pressure (hypotension). Be sure to talk with your healthcare provider before taking quinidine with Calan SR.
 
Simvastatin
Calan SR increases the level of simvastatin in the blood, increasing the risk of serious side effects of simvastatin. If these medications are combined, the simvastatin dosage should not exceed 10 mg per day.
   
Theophylline
Calan SR can increase the level of theophylline in your blood, increasing your risk of side effects. Your healthcare provider may need to monitor the level of theophylline in your blood, especially when starting or stopping Calan SR.
 

Final Thoughts on Calan SR Drug Interactions

It is possible that not every Calan SR drug interaction was discussed in this article. Therefore, you should talk with your pharmacist or healthcare provider about drug interactions with Calan SR that may apply to your situation.
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Calan SR Medication Information

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