Drug interactions
Insulin lispro + Sulfadiazine
Severity: Moderate
Insulin lispro and Sulfadiazine: 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
Sulfonamide antibiotics can enhance the glucose-lowering effect of insulin and occasionally cause hypoglycemia. The risk is higher with renal impairment or poor nutrition.
What this interaction means in plain words
Insulin lispro and Sulfadiazine 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.
Why it happens
Sulfonamides may stimulate insulin secretion and have sulfonylurea-like effects; the mechanism with exogenous insulin is not fully defined.
What to do
Monitor blood glucose more often when starting or stopping the sulfonamide. Lower the insulin dose if hypoglycemia develops.
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 lispro
Frequently asked questions
Can I take Insulin lispro with Sulfadiazine?
MediHelp rates the interaction as moderate. Insulin lispro and Sulfadiazine 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. Sulfonamide antibiotics can enhance the glucose-lowering effect of insulin and occasionally cause hypoglycemia. The risk is higher with renal impairment or poor nutrition.
How serious is the interaction between Insulin lispro and Sulfadiazine?
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 when starting or stopping the sulfonamide. Lower the insulin dose if hypoglycemia develops.
What other medicines interact with Insulin lispro?
MediHelp also lists interactions of Insulin lispro with, for example, Alogliptin-pioglitazone, Ethanol, Metreleptin. The full list is on the Insulin lispro page.
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