Drug interactions
Insulin glargine + Nadolol
Severity: Moderate
Insulin glargine and Nadolol: moderate 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
Nonselective beta blockers such as nadolol can mask adrenergic warning signs of hypoglycemia (except sweating) and delay glucose recovery. They may also impair insulin secretion and worsen glucose tolerance with long-term use.
What this interaction means in plain words
Insulin glargine and Nadolol can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Insulin glargine belongs to Endocrine; Nadolol belongs to Cardiovascular.
Why it happens
Beta-adrenergic blockade suppresses glycogenolysis and counter-regulatory responses and blunts hypoglycemia symptoms such as tachycardia and tremor.
What to do
Monitor blood glucose more frequently and educate patients that hypoglycemia symptoms may be blunted; consider a cardioselective beta blocker if one is needed.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Insulin glargine
Other interactions of Nadolol
Frequently asked questions
Can I take Insulin glargine with Nadolol?
MediHelp rates the interaction as moderate. Insulin glargine and Nadolol can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Nonselective beta blockers such as nadolol can mask adrenergic warning signs of hypoglycemia (except sweating) and delay glucose recovery. They may also impair insulin secretion and worsen glucose tolerance with long-term use.
How serious is the interaction between Insulin glargine and Nadolol?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor blood glucose more frequently and educate patients that hypoglycemia symptoms may be blunted; consider a cardioselective beta blocker if one is needed.
What other medicines interact with Insulin glargine?
MediHelp also lists interactions of Insulin glargine with, for example, Alogliptin-pioglitazone, Ethanol, Glimepiride-pioglitazone. The full list is on the Insulin glargine page.
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