Drug interactions
Demeclocycline + Isotretinoin
Severity: Contraindicated
Demeclocycline and Isotretinoin: contraindicated 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
Both isotretinoin and tetracyclines such as demeclocycline can independently cause raised intracranial pressure. Combined use increases the risk of pseudotumor cerebri, with headache, visual disturbance and papilledema, and potential permanent vision loss.
What this interaction means in plain words
Demeclocycline and Isotretinoin are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two.
Why it happens
Additive pharmacodynamic effect on intracranial pressure; exact mechanism not established.
What to do
Avoid concurrent use; choose a non-tetracycline antibiotic. If headache or visual symptoms develop, stop both and obtain urgent ophthalmologic evaluation.
What to ask your pharmacist
- Is there an alternative to one of these two medicines for me?
- If both are essential, who is monitoring me and how often?
- Which symptoms mean I should stop and seek help straight away?
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Other interactions of Isotretinoin
- Isotretinoin + Minocycline Contraindicated
- Isotretinoin + Oxytetracycline Contraindicated
- Isotretinoin + Palovarotene Contraindicated
- Aminolevulinic acid + Isotretinoin Major
- Doxycycline + Isotretinoin Major
- Isotretinoin + Lomitapide Major
Frequently asked questions
Can I take Demeclocycline with Isotretinoin?
MediHelp rates the interaction as contraindicated. Demeclocycline and Isotretinoin are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two. Both isotretinoin and tetracyclines such as demeclocycline can independently cause raised intracranial pressure. Combined use increases the risk of pseudotumor cerebri, with headache, visual disturbance and papilledema, and potential permanent vision loss.
How serious is the interaction between Demeclocycline and Isotretinoin?
MediHelp rates it contraindicated, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid concurrent use; choose a non-tetracycline antibiotic. If headache or visual symptoms develop, stop both and obtain urgent ophthalmologic evaluation.
What other medicines interact with Isotretinoin?
MediHelp also lists interactions of Isotretinoin with, for example, Minocycline, Oxytetracycline, Palovarotene. The full list is on the Isotretinoin page.
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