Drug interactions
Leuprolide + Saquinavir
Severity: Major
Leuprolide and Saquinavir: major 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
Boosted saquinavir prolongs the QT and PR intervals and has a labeled warning for use with other QT-prolonging drugs. Leuprolide may add to the QT effect, increasing risk of torsades de pointes.
What this interaction means in plain words
Leuprolide and Saquinavir can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Why it happens
Additive pharmacodynamic QT prolongation.
What to do
Obtain a baseline ECG and consider an alternative antiretroviral if QT risk is high. If used together, monitor ECG and correct electrolytes.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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Other interactions of Leuprolide
- Leuprolide + Pimozide Contraindicated
- Leuprolide + Thioridazine Contraindicated
- Amisulpride + Leuprolide Major
- Arsenic trioxide + Leuprolide Major
- Artemether / lumefantrine + Leuprolide Major
- Disopyramide + Leuprolide Major
Frequently asked questions
Can I take Leuprolide with Saquinavir?
MediHelp rates the interaction as major. Leuprolide and Saquinavir can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Boosted saquinavir prolongs the QT and PR intervals and has a labeled warning for use with other QT-prolonging drugs. Leuprolide may add to the QT effect, increasing risk of torsades de pointes.
How serious is the interaction between Leuprolide and Saquinavir?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Obtain a baseline ECG and consider an alternative antiretroviral if QT risk is high. If used together, monitor ECG and correct electrolytes.
What other medicines interact with Leuprolide?
MediHelp also lists interactions of Leuprolide with, for example, Pimozide, Thioridazine, Amisulpride. The full list is on the Leuprolide page.
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