The short answer
Keep at least four hours between deferiprone and calcium-containing supplements or medicines, following the label’s polyvalent-mineral precaution. Have the pharmacist fit this around your exact tablet regimen.
What this answer covers
Oral deferiprone tablets with calcium-containing medicines or supplements. Polyvalent-cation precaution; ordinary food and the distinct tablet regimens require separate consideration.
- Supplement or preparation
- Calcium
- Medication ingredient
- deferiprone
Check the exact oral medicine
This applies to oral deferiprone tablets such as FERRIPROX. Two different 1000 mg formulations use different twice-daily or three-times-daily schedules. Confirm your tablet and prescription; do not interchange regimens while fitting in supplements.
Why minerals are separated
Deferiprone can bind polyvalent mineral ions. Calcium is a divalent mineral, so the label’s polyvalent-cation precaution is relevant to a supplement or antacid containing it. The label’s named examples are iron, aluminum and zinc; an exact calcium interaction magnitude is not reported. This potential binding underlies the precaution; it is not a measured percentage reduction in drug absorption or evidence of treatment failure in every user.
Use the four-hour instruction for the product
The label advises at least four hours between deferiprone and medicines or supplements containing these minerals. Medication-use guidance repeats four hours before or after for listed antacids and supplements. This applies to the mineral product, not an automatic four-hour ban on ordinary meals.
Keep the mineral and chelation plans coordinated
Show antacids, mineral supplements and multivitamins to the pharmacist so their combined mineral content is considered. Do not change the chelator regimen or stop a prescribed supplement yourself.
Evidence and practical considerations
Absorption & effectiveness
The exact deferiprone label supports at least four-hour separation from polyvalent-cation products, without a measured absorption reduction for every salt.
- Exact scope
- Oral deferiprone tablets with calcium-containing medicines or supplements. Polyvalent-cation precaution; ordinary food and the distinct tablet regimens require separate consideration. with RxNorm11645 IN deferiprone. Exact oral FERRIPROX molecule; distinct twice-daily and three-times-daily1000 mg tablets have different regimens and are not interchangeable schedules.
- Medication form and route
- Oral
What remains uncertain
- Label-supported potential binding and interval, not an exact salt-by-salt human PK or outcome study. Explicit class-membership bridge for a divalent mineral, not direct calcium/magnesium trial evidence.
Factors that may matter: Exact oral release formulation; Mineral salt and combination ingredients; Dosing order and meals; Treatment indication.
Read the supporting source summaries
Source 1: Current original prescribing information
dailymed.nlm.nih.gov · Source check Sep 10, 2026
Population: Patients prescribed the specified oral formulation.
At least four-hour interval from polyvalent-cation medicines/supplements. Avoid UGT1A6 inhibitors including silymarin; monitor zinc and supplement if deficient.
How this applies: RxNorm11645 IN deferiprone. Exact oral FERRIPROX molecule; distinct twice-daily and three-times-daily 1000 mg tablets have different regimens and are not interchangeable schedules.
Potential binding and in-vitro metabolism evidence are not measured human exposure changes for every mineral/botanical product. Tablet regimen differences retained.
Source 2: Original medication-use guidance
medlineplus.gov · Source check Sep 10, 2026
Population: Users of oral deferiprone.
Four hours before or after listed antacids/multivitamins/iron/zinc. Discuss milk thistle separately; mineral timing does not resolve enzyme interaction.
How this applies: RxNorm11645 IN deferiprone. Exact oral FERRIPROX molecule; distinct twice-daily and three-times-daily 1000 mg tablets have different regimens and are not interchangeable schedules.
Practical guidance, not a trial proving every listed interval restores exposure. Direction and formulation matter.
Source 3: Medication terminology
rxnav.nlm.nih.gov · Source check Sep 10, 2026
Population: Terminology.
deferiprone is IN.
How this applies: Exact ingredient.
Not clinical evidence.
Research assessment: · Open full citations ↗
Review and change history
- Publication status
- Published research summary
- Clinical review
- Not yet recorded
| Date | Update |
|---|---|
| Research summary published | |
| Article prepared | |
| Sources checked and article drafted. |
Article revision: 1e5891cc59923a72
This guide brings together the evidence records used by our interaction checker. Each finding retains its own preparation limits, research date, and source summaries.
Full citations require verification. Reading this answer and the source summaries does not.
Taking other supplements or medications?
Use the checker to explore your other combinations. Ask a pharmacist to review the exact products, amounts and medical conditions in your complete list.
Open the interaction checkerInformation, not medical advice. Do not change prescribed treatment based on this guide.