Drug interactions
Glipizide-metformin + Guanfacine
Severity: Minor
Glipizide-metformin and Guanfacine: minor interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Guanfacine, a central alpha-2 agonist, may blunt some adrenergic warning symptoms of hypoglycemia such as tachycardia and tremor. This is mainly relevant to the sulfonylurea component, as hypoglycemia may go unrecognized.
What this interaction means in plain words
Glipizide-metformin and Guanfacine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Glipizide-metformin belongs to Endocrine; Guanfacine belongs to Cardiovascular.
Why it happens
Central sympatholytic action reduces catecholamine-mediated autonomic symptoms of hypoglycemia.
What to do
Counsel the patient that sweating may remain a warning sign while other symptoms are reduced, and encourage regular glucose monitoring.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Glipizide-metformin
Other interactions of Guanfacine
- Clonidine + Guanfacine Major
- Guanfacine + Lofexidine Major
- Aldesleukin + Guanfacine Moderate
- Amiodarone + Guanfacine Moderate
- Amisulpride + Guanfacine Moderate
- Amitriptyline + Guanfacine Moderate
Frequently asked questions
Can I take Glipizide-metformin with Guanfacine?
MediHelp rates the interaction as minor. Glipizide-metformin and Guanfacine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Guanfacine, a central alpha-2 agonist, may blunt some adrenergic warning symptoms of hypoglycemia such as tachycardia and tremor. This is mainly relevant to the sulfonylurea component, as hypoglycemia may go unrecognized.
How serious is the interaction between Glipizide-metformin and Guanfacine?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Counsel the patient that sweating may remain a warning sign while other symptoms are reduced, and encourage regular glucose monitoring.
What other medicines interact with Glipizide-metformin?
MediHelp also lists interactions of Glipizide-metformin with, for example, Contrast media, Diatrizoate meglumine / diatrizoate, Diatrizoate. The full list is on the Glipizide-metformin page.
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