Does Tetracycline Interact with Lanthanum Carbonate?
CDI records a moderate classification for Tetracycline and Lanthanum Carbonate. The stored summary is: Lanthanum carbonate may reduce bioavailability of tetracyclines. Do not administer within 2 hours of lanthanum carbonate dosing. The mechanism involves binding to cationic antacid reduces absorption. Patients taking both medications should consult their healthcare provider before starting, stopping, or changing the dosage of either drug. This record was extracted from drug labeling through openFDA. NIH/NLM RxNorm is used for drug identities. The summary and severity classification are CDI's processed information, not a verbatim source quotation. Product, route, and patient circumstances matter.
- Severity
- Moderate
- Management
- Monitor for effects
- Data Source
- U.S. FDA via OpenFDA
Recorded Mechanism
Binding to cationic antacid reduces absorption
What To Tell Your Doctor or Pharmacist
If you are taking Tetracycline and your doctor is considering prescribing Lanthanum Carbonate (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