Drug interactions
Ketamine + Saquinavir
Severity: Moderate
Ketamine and Saquinavir: 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
Saquinavir, boosted or not, inhibits CYP3A4, which is a major pathway of ketamine metabolism. Ketamine exposure may therefore increase, leading to longer or deeper sedation and stronger cardiovascular effects.
What this interaction means in plain words
Ketamine and Saquinavir 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
Saquinavir inhibits CYP3A4, reducing ketamine metabolic clearance.
What to do
Start with lower ketamine doses and titrate to effect, monitoring sedation depth, blood pressure and recovery. Take extra care with oral ketamine.
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 Ketamine
Frequently asked questions
Can I take Ketamine with Saquinavir?
MediHelp rates the interaction as moderate. Ketamine and Saquinavir 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. Saquinavir, boosted or not, inhibits CYP3A4, which is a major pathway of ketamine metabolism. Ketamine exposure may therefore increase, leading to longer or deeper sedation and stronger cardiovascular effects.
How serious is the interaction between Ketamine and Saquinavir?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Start with lower ketamine doses and titrate to effect, monitoring sedation depth, blood pressure and recovery. Take extra care with oral ketamine.
What other medicines interact with Ketamine?
MediHelp also lists interactions of Ketamine with, for example, Benzhydrocodone / acetaminophen, Brexanolone, Buprenorphine buccal. The full list is on the Ketamine page.
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