Drug interactions
Glipizide-metformin + Timolol
Severity: Moderate
Glipizide-metformin 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
Beta-blockers, including systemically absorbed timolol, can hide adrenergic warning signs of hypoglycemia such as tremor and palpitations. They may also prolong hypoglycemia and slightly impair glucose control.
What this interaction means in plain words
Glipizide-metformin 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.
Glipizide-metformin belongs to Endocrine; Timolol belongs to Cardiovascular.
Why it happens
Beta-adrenergic blockade masks hypoglycemia symptoms and blunts glycogenolysis and hepatic glucose recovery.
What to do
Monitor blood glucose more often and counsel the patient that sweating may be the only remaining warning sign. Prefer a cardioselective agent if a beta-blocker 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 Glipizide-metformin
Other interactions of Timolol
- Acebutolol + Timolol Major
- Albuterol + Timolol Major
- Aldesleukin + Timolol Major
- Amifostine + Timolol Major
- Amiodarone + Timolol Major
- Arformoterol + Timolol Major
Frequently asked questions
Can I take Glipizide-metformin with Timolol?
MediHelp rates the interaction as moderate. Glipizide-metformin 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. Beta-blockers, including systemically absorbed timolol, can hide adrenergic warning signs of hypoglycemia such as tremor and palpitations. They may also prolong hypoglycemia and slightly impair glucose control.
How serious is the interaction between Glipizide-metformin 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 often and counsel the patient that sweating may be the only remaining warning sign. Prefer a cardioselective agent if a beta-blocker is needed.
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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