Drug interactions
Insulin aspart + Timolol
Severity: Moderate
Insulin aspart and Timolol: 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
Timolol can mask adrenergic symptoms of hypoglycemia and delay recovery of normal glucose after insulin-induced lows. It may also impair insulin secretion and worsen glucose tolerance. Sweating is usually preserved as a warning sign.
What this interaction means in plain words
Insulin aspart and Timolol 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 aspart belongs to Endocrine; Timolol belongs to Cardiovascular.
Why it happens
Beta-adrenergic blockade impairs glycogenolysis and masks sympathetic hypoglycemia symptoms.
What to do
Monitor blood glucose more frequently and educate the patient about atypical hypoglycemia signs. Adjust the insulin dose as 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 Timolol
- Acebutolol + Timolol Major
- Albuterol + Timolol Major
- Aldesleukin + Timolol Major
- Amifostine + Timolol Major
- Amiodarone + Timolol Major
- Arformoterol + Timolol Major
Other interactions of Insulin aspart
Frequently asked questions
Can I take Insulin aspart with Timolol?
MediHelp rates the interaction as moderate. Insulin aspart and Timolol 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. Timolol can mask adrenergic symptoms of hypoglycemia and delay recovery of normal glucose after insulin-induced lows. It may also impair insulin secretion and worsen glucose tolerance. Sweating is usually preserved as a warning sign.
How serious is the interaction between Insulin aspart and Timolol?
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 the patient about atypical hypoglycemia signs. Adjust the insulin dose as needed.
What other medicines interact with Timolol?
MediHelp also lists interactions of Timolol with, for example, Acebutolol, Albuterol, Aldesleukin. The full list is on the Timolol page.
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