Is Glucomannan Safe with Glipizide?
Free · No account · based on published sources including NIH ODS, FDA drug labels, and peer-reviewed literature
Separate doses by at least 2 hours. Monitor blood glucose more frequently, especially after meals. Have a fast-acting sugar source available. Report blood sugar readings below 70 mg/dL to your healthcare provider immediately.
Why this interaction occurs
Glucomannan slows carbohydrate digestion and blunts postprandial glucose spikes. Combined with sulfonylureas that continuously stimulate insulin release, the additive glucose-lowering effect can cause clinically significant hypoglycemia.
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 Glucomannan interactions → · All Glipizide interactions →
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Educational only — not medical advice.
Always confirm with your doctor or pharmacist.