Drug interactions
Rifapentine + Tetracycline
Severity: Minor
Rifapentine and Tetracycline: 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
Rifapentine is an enzyme inducer that may reduce concentrations of some co-administered antibiotics. For tetracycline, which is mostly excreted unchanged, any reduction is expected to be small and clinical relevance is uncertain.
What this interaction means in plain words
Rifapentine and Tetracycline have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Rifapentine belongs to Anti Bacterial; Tetracycline belongs to Anti Bacterial.
Why it happens
Possible induction of metabolism or transport by rifapentine; tetracycline is not a major CYP3A4 substrate.
What to do
Monitor clinical response to tetracycline; no routine dose change is needed.
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 Tetracycline
- Acitretin + Tetracycline Contraindicated
- Methoxyflurane + Tetracycline Contraindicated
- Isotretinoin + Tetracycline Major
- Palovarotene + Tetracycline Major
- Strontium ranelate + Tetracycline Major
- Tetracycline + Tretinoin Major
Other interactions of Rifapentine
- Ledipasvir-sofosbuvir + Rifapentine Contraindicated
- Lorlatinib + Rifapentine Contraindicated
- Lurasidone + Rifapentine Contraindicated
- Ranolazine + Rifapentine Contraindicated
- Rifapentine + Sofosbuvir-velpatasvir Contraindicated
- Rifapentine + Sofosbuvir-velpatasvir-voxilaprevir Contraindicated
Frequently asked questions
Can I take Rifapentine with Tetracycline?
MediHelp rates the interaction as minor. Rifapentine and Tetracycline have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Rifapentine is an enzyme inducer that may reduce concentrations of some co-administered antibiotics. For tetracycline, which is mostly excreted unchanged, any reduction is expected to be small and clinical relevance is uncertain.
How serious is the interaction between Rifapentine and Tetracycline?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor clinical response to tetracycline; no routine dose change is needed.
What other medicines interact with Tetracycline?
MediHelp also lists interactions of Tetracycline with, for example, Acitretin, Methoxyflurane, Isotretinoin. The full list is on the Tetracycline page.
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