Is Calcium (oral supplements) Safe with Modified Citrus Pectin?
Free · No account · based on published sources including NIH ODS, FDA drug labels, and peer-reviewed literature
Take calcium supplements at least 2 hours before or after modified citrus pectin to minimize binding in the digestive tract.
Why this interaction occurs
Pectin is a soluble fiber with known divalent cation-binding properties. Modified citrus pectin can form gel-like complexes with calcium ions in the intestinal lumen, potentially reducing the fraction of calcium available for absorption.
Evidence
Evidence level: moderate.
Reported safety data
The FDA’s adverse event reporting system (FAERS) has received 90,141 reports mentioning Modified Citrus Pectin. This reflects reported cases involving the medication in general — not confirmed causation, and not specific to the Modified Citrus Pectin + supplement combination on this page.
FAERS reports are voluntary and cannot prove that a drug caused an event. Do not use report counts to assess the safety of this specific drug-supplement pair.
Frequently asked questions
Related interactions
All Calcium (oral supplements) interactions → · All Modified Citrus Pectin interactions →
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Educational only — not medical advice.
Always confirm with your doctor or pharmacist.