Drug interactions
Insulin nph + Nortriptyline
Severity: Minor
Insulin nph and Nortriptyline: minor 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
Tricyclic antidepressants can alter glucose control and may enhance the hypoglycemic effect of insulin, and can also mask or mimic some hypoglycemia symptoms. The effect is variable.
What this interaction means in plain words
Insulin nph and Nortriptyline have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
Pharmacodynamic effects on glucose regulation and possible increased insulin sensitivity.
What to do
Monitor blood glucose more often when nortriptyline is started, changed or stopped, and adjust the insulin dose if needed.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Nortriptyline
- Disopyramide + Nortriptyline Contraindicated
- Dofetilide + Nortriptyline Contraindicated
- Dronedarone + Nortriptyline Contraindicated
- Ibutilide + Nortriptyline Contraindicated
- Isocarboxazid + Nortriptyline Contraindicated
- Methylene blue + Nortriptyline Contraindicated
Frequently asked questions
Can I take Insulin nph with Nortriptyline?
MediHelp rates the interaction as minor. Insulin nph and Nortriptyline have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Tricyclic antidepressants can alter glucose control and may enhance the hypoglycemic effect of insulin, and can also mask or mimic some hypoglycemia symptoms. The effect is variable.
How serious is the interaction between Insulin nph and Nortriptyline?
MediHelp rates it minor, 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 nortriptyline is started, changed or stopped, and adjust the insulin dose if needed.
What other medicines interact with Nortriptyline?
MediHelp also lists interactions of Nortriptyline with, for example, Disopyramide, Dofetilide, Dronedarone. The full list is on the Nortriptyline page.
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