Drug interactions
Demeclocycline + Polycarbophil
Severity: Moderate
Demeclocycline and Polycarbophil: 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
Polycarbophil is a bulk-forming agent that contains calcium and can bind tetracyclines in the gut. Taken together by mouth, it may reduce the absorption of demeclocycline and weaken its antibacterial effect.
What this interaction means in plain words
Demeclocycline and Polycarbophil 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
Calcium chelation and adsorption in the gastrointestinal tract reduce oral absorption of demeclocycline.
What to do
Give demeclocycline at least 2 hours before or 2 hours after polycarbophil. Monitor clinical response to the antibiotic.
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 Polycarbophil
- Doxycycline + Polycarbophil Moderate
- Minocycline + Polycarbophil Moderate
- Oxytetracycline + Polycarbophil Moderate
- Polycarbophil + Tetracycline Moderate
Frequently asked questions
Can I take Demeclocycline with Polycarbophil?
MediHelp rates the interaction as moderate. Demeclocycline and Polycarbophil 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. Polycarbophil is a bulk-forming agent that contains calcium and can bind tetracyclines in the gut. Taken together by mouth, it may reduce the absorption of demeclocycline and weaken its antibacterial effect.
How serious is the interaction between Demeclocycline and Polycarbophil?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Give demeclocycline at least 2 hours before or 2 hours after polycarbophil. Monitor clinical response to the antibiotic.
What other medicines interact with Polycarbophil?
MediHelp also lists interactions of Polycarbophil with, for example, Doxycycline, Minocycline, Oxytetracycline. The full list is on the Polycarbophil page.
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