Diltiazem Drug Interactions (Cont.)

 
Lovastatin (Mevacor)
Diltiazem can increase the level of lovastatin in your blood, increasing your risk of side effects. Your healthcare provider may need to decrease your lovastatin dosage.
 
Quinidine
Diltiazem can increase the level of quinidine in your blood, increasing your risk of side effects. Your healthcare provider may need to decrease your quinidine dosage.
 
Rifampin (Rifadin)
Rifampin can greatly decrease the level of diltiazem in your blood, making it much less effective. In general, these medications should not be combined.
 

Final Thoughts on Diltiazem Drug Interactions

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

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Written by/reviewed by: Kristi Monson, PharmD; Arthur Schoenstadt, MD
Last reviewed by: Kristi Monson, PharmD;