Drug interactions
Guanfacine + Nateglinide
Severity: Minor
Guanfacine and Nateglinide: 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 the adrenergic warning symptoms of hypoglycemia such as tachycardia and tremor. A patient on nateglinide may therefore be less aware of falling blood glucose, although sweating is usually preserved.
What this interaction means in plain words
Guanfacine and Nateglinide 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 belongs to Cardiovascular; Nateglinide belongs to Endocrine.
Why it happens
Reduced sympathetic outflow from central alpha-2 stimulation dampens the catecholamine-mediated symptoms of hypoglycemia.
What to do
Advise patients to monitor blood glucose rather than rely on symptoms, especially when meals are irregular.
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 Nateglinide
- Albiglutide + Nateglinide Moderate
- Alogliptin-metformin + Nateglinide Moderate
- Alogliptin-pioglitazone + Nateglinide Moderate
- Alogliptin + Nateglinide Moderate
- Alpelisib + Nateglinide Moderate
- Amiodarone + Nateglinide Moderate
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 Guanfacine with Nateglinide?
MediHelp rates the interaction as minor. Guanfacine and Nateglinide 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 the adrenergic warning symptoms of hypoglycemia such as tachycardia and tremor. A patient on nateglinide may therefore be less aware of falling blood glucose, although sweating is usually preserved.
How serious is the interaction between Guanfacine and Nateglinide?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Advise patients to monitor blood glucose rather than rely on symptoms, especially when meals are irregular.
What other medicines interact with Nateglinide?
MediHelp also lists interactions of Nateglinide with, for example, Albiglutide, Alogliptin-metformin, Alogliptin-pioglitazone. The full list is on the Nateglinide page.
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