Is Pectin Safe with Glipizide?
Free · No account · based on published sources including NIH ODS, FDA drug labels, and peer-reviewed literature
Take glipizide at least 2 hours before or 4 hours after pectin supplementation. Monitor blood glucose closely as hypoglycemic effect may be reduced or delayed.
Why this interaction occurs
Pectin, a viscous soluble fiber, forms a gel matrix in the GI tract that significantly delays and reduces the absorption of orally administered sulfonylureas including glipizide. Studies have demonstrated reduced peak plasma concentrations and delayed Tmax when sulfonylureas are co-administered with viscous fibers, potentially leading to inadequate postprandial glucose control.
Evidence
Evidence level: moderate.
Reported safety data
The FDA’s adverse event reporting system (FAERS) has received 55,328 reports mentioning Glipizide. This reflects reported cases involving the medication in general — not confirmed causation, and not specific to the Glipizide + 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 Pectin interactions → · All Glipizide interactions →
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Educational only — not medical advice.
Always confirm with your doctor or pharmacist.