Drug interactions
Insulin aspart + Niacin
Severity: Moderate
Insulin aspart and Niacin: 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
Niacin can worsen glycemic control by increasing insulin resistance, reducing the effect of insulin. Higher insulin doses may be needed.
What this interaction means in plain words
Insulin aspart and Niacin 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; Niacin belongs to Cardiovascular.
Why it happens
Niacin induces insulin resistance and raises blood glucose, opposing insulin action.
What to do
Monitor blood glucose more frequently when niacin is started, changed or stopped. 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 Niacin
- Alogliptin-metformin + Niacin Moderate
- Atorvastatin + Niacin Moderate
- Canagliflozin-metformin + Niacin Moderate
- Cholestyramine + Niacin Moderate
- Colestipol + Niacin Moderate
- Dapagliflozin-metformin + Niacin Moderate
Other interactions of Insulin aspart
Frequently asked questions
Can I take Insulin aspart with Niacin?
MediHelp rates the interaction as moderate. Insulin aspart and Niacin 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. Niacin can worsen glycemic control by increasing insulin resistance, reducing the effect of insulin. Higher insulin doses may be needed.
How serious is the interaction between Insulin aspart and Niacin?
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 when niacin is started, changed or stopped. Adjust the insulin dose as needed.
What other medicines interact with Niacin?
MediHelp also lists interactions of Niacin with, for example, Alogliptin-metformin, Atorvastatin, Canagliflozin-metformin. The full list is on the Niacin page.
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