Drug interactions
Insulin detemir + Pseudoephedrine
Severity: Minor
Insulin detemir and Pseudoephedrine: 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
Pseudoephedrine is a sympathomimetic that can raise blood glucose, which may partly offset the glucose-lowering effect of insulin. The effect is generally small at usual oral doses but may be noticeable in patients with poorly controlled diabetes.
What this interaction means in plain words
Insulin detemir and Pseudoephedrine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Insulin detemir belongs to Endocrine; Pseudoephedrine belongs to Respiratory.
Why it happens
Adrenergic stimulation increases hepatic glucose output and glycogenolysis and can reduce insulin secretion, opposing insulin action.
What to do
Monitor blood glucose more frequently when starting or stopping pseudoephedrine and adjust the insulin dose if readings rise. Consider a non-sympathomimetic decongestant if glucose control worsens.
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 Pseudoephedrine
- Isocarboxazid + Pseudoephedrine Contraindicated
- Phenelzine + Pseudoephedrine Contraindicated
- Pseudoephedrine + Rasagiline Contraindicated
- Pseudoephedrine + Selegiline Contraindicated
- Pseudoephedrine + Selegiline transdermal Contraindicated
- Pseudoephedrine + Tranylcypromine Contraindicated
Other interactions of Insulin detemir
Frequently asked questions
Can I take Insulin detemir with Pseudoephedrine?
MediHelp rates the interaction as minor. Insulin detemir and Pseudoephedrine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Pseudoephedrine is a sympathomimetic that can raise blood glucose, which may partly offset the glucose-lowering effect of insulin. The effect is generally small at usual oral doses but may be noticeable in patients with poorly controlled diabetes.
How serious is the interaction between Insulin detemir and Pseudoephedrine?
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 frequently when starting or stopping pseudoephedrine and adjust the insulin dose if readings rise. Consider a non-sympathomimetic decongestant if glucose control worsens.
What other medicines interact with Pseudoephedrine?
MediHelp also lists interactions of Pseudoephedrine with, for example, Isocarboxazid, Phenelzine, Rasagiline. The full list is on the Pseudoephedrine page.
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