Drug interactions
Demeclocycline + Heparin
Severity: Minor
Demeclocycline and Heparin: minor 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
Tetracyclines have been reported to potentiate anticoagulant effects, mostly with vitamin K antagonists. An effect on heparin is theoretical and unlikely to be clinically significant.
What this interaction means in plain words
Demeclocycline and Heparin have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
Not established; possible reduction of gut vitamin K production and mild effects on coagulation.
What to do
No dose change is needed. Monitor aPTT or anti-Xa as usual and watch for bleeding.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Heparin
- Defibrotide + Heparin Contraindicated
- Heparin + Ketorolac Contraindicated
- Heparin + Oritavancin Contraindicated
- Acemetacin + Heparin Major
- Acetylsalicylic acid + Heparin Major
- Alteplase + Heparin Major
Frequently asked questions
Can I take Demeclocycline with Heparin?
MediHelp rates the interaction as minor. Demeclocycline and Heparin have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Tetracyclines have been reported to potentiate anticoagulant effects, mostly with vitamin K antagonists. An effect on heparin is theoretical and unlikely to be clinically significant.
How serious is the interaction between Demeclocycline and Heparin?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No dose change is needed. Monitor aPTT or anti-Xa as usual and watch for bleeding.
What other medicines interact with Heparin?
MediHelp also lists interactions of Heparin with, for example, Defibrotide, Ketorolac, Oritavancin. The full list is on the Heparin page.
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