Drug interactions
Doxycycline + Sodium citrate / citric acid
Severity: Minor
Doxycycline and Sodium citrate / citric acid: 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
Citrate solutions raise gastric pH and may contain aluminum or other cations in some products, with a small potential to reduce doxycycline absorption. The effect is usually minor.
What this interaction means in plain words
Doxycycline and Sodium citrate / citric acid 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
Altered gastric pH and possible cation-related reduction in doxycycline absorption.
What to do
Separate doses by about 2 hours.
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 Doxycycline
- Acitretin + Doxycycline Contraindicated
- Aminolevulinic acid + Doxycycline Major
- Cholera vaccine + Doxycycline Major
- Doxycycline + Isotretinoin Major
- Doxycycline + Methoxyflurane Major
- Doxycycline + Microbiota Major
Frequently asked questions
Can I take Doxycycline with Sodium citrate / citric acid?
MediHelp rates the interaction as minor. Doxycycline and Sodium citrate / citric acid have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Citrate solutions raise gastric pH and may contain aluminum or other cations in some products, with a small potential to reduce doxycycline absorption. The effect is usually minor.
How serious is the interaction between Doxycycline and Sodium citrate / citric acid?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Separate doses by about 2 hours.
What other medicines interact with Doxycycline?
MediHelp also lists interactions of Doxycycline with, for example, Acitretin, Aminolevulinic acid, Cholera vaccine. The full list is on the Doxycycline page.
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