Drug interactions
Ketamine + Opium tincture
Severity: Moderate
Ketamine and Opium tincture: 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
Opium tincture contains morphine, and combined use with ketamine increases sedation and may add to respiratory depression.
What this interaction means in plain words
Ketamine and Opium tincture 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
Additive CNS and respiratory depression via opioid receptor agonism and NMDA antagonism.
What to do
Monitor sedation and respiratory rate, and use the lowest effective opioid dose. Titrate ketamine cautiously.
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 Opium tincture?
MediHelp rates the interaction as moderate. Ketamine and Opium tincture 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. Opium tincture contains morphine, and combined use with ketamine increases sedation and may add to respiratory depression.
How serious is the interaction between Ketamine and Opium tincture?
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 sedation and respiratory rate, and use the lowest effective opioid dose. Titrate ketamine cautiously.
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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