Does Ferric Citrate Interact with Vadadustat?
Ferric Citrate and Vadadustat have a moderate drug interaction according to U.S. FDA drug labeling data. Co-administration decreases vadadustat exposure, which may reduce effectiveness. Stagger administration by at least 1 hour. The mechanism involves decreased vadadustat absorption. 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
- Moderate
- Vadadustat Class
- Hypoxia-inducible Factor Prolyl Hydroxylase Inhibitor
- Management
- Monitor for effects
- Data Source
- U.S. FDA via OpenFDA
How This Interaction Works
The interaction between Ferric Citrate and Vadadustat occurs because decreased vadadustat absorption. Clinically, this means co-administration decreases vadadustat exposure, which may reduce effectiveness. stagger administration by at least 1 hour. This is classified as a moderate interaction. While it may not require stopping either medication, your healthcare provider should be aware you are taking both so they can monitor for potential effects and adjust treatment if necessary.
What To Tell Your Doctor or Pharmacist
If you are taking Ferric Citrate and your doctor is considering prescribing Vadadustat (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 whether any dosage adjustments are needed
- Never stop or change either medication without first consulting your healthcare provider