Does Ramipril Interact with Lithium?
Ramipril and Lithium have a major drug interaction according to U.S. FDA drug labeling data. Increased serum lithium levels and symptoms of lithium toxicity have been reported. Risk may be increased if a diuretic is also used. Frequent monitoring of serum lithium levels is recommended. The mechanism involves ace inhibitor reduces lithium clearance. 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
- Ramipril Class
- Angiotensin Converting Enzyme Inhibitor
- Management
- Close medical supervision required
- Data Source
- U.S. FDA via OpenFDA
How This Interaction Works
The interaction between Ramipril and Lithium occurs because ace inhibitor reduces lithium clearance. Clinically, this means increased serum lithium levels and symptoms of lithium toxicity have been reported. risk may be increased if a diuretic is also used. frequent monitoring of serum lithium levels is recommended. 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 Ramipril and your doctor is considering prescribing Lithium (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