Digoxin (Digitek, Lanoxin)
Tiazac may increase the level of digoxin in your blood (although studies have shown conflicting results). Because changes in digoxin levels can be dangerous, your healthcare provider should monitor the level of digoxin in your blood and adjust your dosage as necessary. Your healthcare provider should also monitor your heart rate, as Tiazac and digoxin can both lower your heart rate.
Lovastatin (Mevacor)
Tiazac can increase the level of
lovastatin in your blood, potentially increasing your risk of side effects. Your healthcare provider may need to decrease your lovastatin dosage to prevent this from occurring.
Quinidine
Tiazac can increase the level of quinidine in your blood, possibly increasing your risk of side effects. Your healthcare provider may need to decrease your quinidine dosage to prevent this interaction from occurring.
Rifampin (Rifadin)
Rifampin can greatly decrease the level of Tiazac in your blood, perhaps making it much less effective. In general, these medications should not be combined.
Final Thoughts on Tiazac Drug Interactions
It is possible that not all Tiazac drug interactions were discussed in this article. Therefore, you should talk with your pharmacist or healthcare provider about drug interactions that may apply to you.
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