Drug interactions
Minocycline + Warfarin
Severity: Moderate
Minocycline and Warfarin: 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
Minocycline may enhance the anticoagulant effect of warfarin, raising INR and the risk of bleeding. Response varies between patients.
What this interaction means in plain words
Minocycline and Warfarin 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.
Minocycline belongs to Anti Bacterial; Warfarin belongs to Cardiovascular.
Why it happens
Probably reduced vitamin K-producing gut flora; the mechanism is not fully established.
What to do
Check INR within a few days of starting or stopping minocycline and adjust warfarin as needed.
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 Minocycline
- Acitretin + Minocycline Contraindicated
- Isotretinoin + Minocycline Contraindicated
- Cholera vaccine + Minocycline Major
- Methoxyflurane + Minocycline Major
- Minocycline + Palovarotene Major
- Minocycline + Pexidartinib Major
Other interactions of Warfarin
- Defibrotide + Warfarin Contraindicated
- Ketorolac + Warfarin Contraindicated
- Abciximab + Warfarin Major
- Acetylsalicylic acid + Warfarin Major
- Adagrasib + Warfarin Major
- Amiodarone + Warfarin Major
Frequently asked questions
Can I take Minocycline with Warfarin?
MediHelp rates the interaction as moderate. Minocycline and Warfarin 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. Minocycline may enhance the anticoagulant effect of warfarin, raising INR and the risk of bleeding. Response varies between patients.
How serious is the interaction between Minocycline and Warfarin?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Check INR within a few days of starting or stopping minocycline and adjust warfarin as needed.
What other medicines interact with Minocycline?
MediHelp also lists interactions of Minocycline with, for example, Acitretin, Isotretinoin, Cholera vaccine. The full list is on the Minocycline page.
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