Is Reishi (Ganoderma lucidum) Safe with Glipizide?
Free · No account · based on published sources including NIH ODS, FDA drug labels, and peer-reviewed literature
Monitor blood glucose regularly when combining Reishi with sulfonylureas like glipizide. Report symptoms of hypoglycemia to your healthcare provider and do not adjust your medication dose without guidance.
Why this interaction occurs
Reishi polysaccharides have demonstrated blood glucose-lowering properties in diabetic models, potentially through alpha-glucosidase inhibition and improved insulin receptor sensitivity. Combined with sulfonylureas, this creates an additive hypoglycemic effect requiring monitoring.
Evidence
Evidence level: limited.
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 Reishi (Ganoderma lucidum) interactions → · All Glipizide interactions →
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Educational only — not medical advice.
Always confirm with your doctor or pharmacist.