Does Choleystyramine Light Interact with Digitalis Glycosides?
Choleystyramine Light and Digitalis Glycosides have a major drug interaction according to U.S. FDA drug labeling data. Cholestyramine may reduce digitalis absorption; discontinuance could pose hazard if drug was titrated to maintenance level during concurrent use. The mechanism involves binding and delayed/reduced absorption; enterohepatic circulation interference. Patients taking both medications should consult their healthcare provider before starting, stopping, or changing the dosage of either drug. This information is based on official FDA drug labeling sourced from OpenFDA and the NIH National Library of Medicine.
- Severity
- Major
- Choleystyramine Light Class
- Bile Acid Sequestrant
- Management
- Close medical supervision required
- Data Source
- U.S. FDA via OpenFDA
How This Interaction Works
The interaction between Choleystyramine Light and Digitalis Glycosides occurs because binding and delayed/reduced absorption; enterohepatic circulation interference. Clinically, this means cholestyramine may reduce digitalis absorption; discontinuance could pose hazard if drug was titrated to maintenance level during concurrent use. This is classified as a major interaction, meaning it could cause serious harm if not properly managed. Your healthcare provider may need to adjust dosages, substitute one medication, or increase monitoring frequency.
What To Tell Your Doctor or Pharmacist
If you are taking Choleystyramine Light and your doctor is considering prescribing Digitalis Glycosides (or vice versa), make sure to:
- Inform your doctor and pharmacist of all current medications, including over-the-counter drugs and supplements
- Ask whether the benefits of combining these medications outweigh the risks for your specific situation
- Ask what symptoms to watch for that would indicate the interaction is causing problems
- Ask how frequently you should be monitored while these are co-prescribed
- Ask whether any dosage adjustments are needed
- Never stop or change either medication without first consulting your healthcare provider