Drug interactions
Guanfacine + Insulin detemir
Severity: Minor
Guanfacine and Insulin detemir: 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 centrally acting alpha-2 agonist, may blunt some autonomic warning symptoms of hypoglycemia such as tachycardia and tremor. Hypoglycemia could therefore go unrecognized.
What this interaction means in plain words
Guanfacine and Insulin detemir 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; Insulin detemir belongs to Endocrine.
Why it happens
Reduced sympathetic outflow and catecholamine response diminishes adrenergic hypoglycemia symptoms.
What to do
Advise patients to monitor blood glucose regularly rather than relying on symptoms, and note that sweating is usually preserved.
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 Insulin detemir
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 Insulin detemir?
MediHelp rates the interaction as minor. Guanfacine and Insulin detemir 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 centrally acting alpha-2 agonist, may blunt some autonomic warning symptoms of hypoglycemia such as tachycardia and tremor. Hypoglycemia could therefore go unrecognized.
How serious is the interaction between Guanfacine and Insulin detemir?
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 regularly rather than relying on symptoms, and note that sweating is usually preserved.
What other medicines interact with Insulin detemir?
MediHelp also lists interactions of Insulin detemir with, for example, Alogliptin-pioglitazone, Ethanol, Glimepiride-pioglitazone. The full list is on the Insulin detemir page.
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