Taurursodiol and Clindamycin: Interaction Details
AI-assisted, pharmacist-reviewed · AI content regenerated Jul 11, 2026 · Source data updated Jul 1, 2026 · Sources: FDA labeling, DDInter 2.0, cited literature
Clindamycin
Taurursodiol
No brand names on record
How we grade severity & evidence
Severity levels
- Contraindicated: These should generally not be used together.
- Major: Potentially serious — often needs a change or close monitoring.
- Moderate: Can be significant — usually manageable with monitoring.
- Minor: Usually limited clinical impact.
Evidence grades
- Established: Well documented — supported by controlled studies or strong clinical data.
- Probable: Good supporting evidence, though not definitively proven.
- Suspected: Some evidence suggests this interaction, but it is not well established.
- Possible: Limited or conflicting evidence; the interaction may occur.
- Theoretical: Predicted from the drugs' pharmacology; not yet confirmed in people.
Ratings come from the documented interaction literature and are reviewed by a pharmacist. They describe the documented risk of the combination, not what will necessarily happen to you — your dose, timing, and health picture all matter.
Let's talk about taking clindamycin (an antibiotic) together with taurursodiol. Your body uses a liver enzyme called CYP3A4 to help clear clindamycin. Taurursodiol (found in combination products with sodium phenylbutyrate) may speed that enzyme up. When the enzyme works faster, your body can clear the antibiotic more quickly, which could leave less of it in your blood to fight the infection.
Here's the reassuring part: this concern is theoretical, meaning it's based on how the drugs work rather than proven cases. Your care team can manage it easily, often by watching how well your infection responds. Please don't stop either medicine, just check in with your pharmacist or doctor.
Effect: Decreased exposure of the CYP3A4 substrate (clindamycin).
Mechanism: Sodium phenylbutyrate/taurursodiol may induce CYP3A4, accelerating clindamycin metabolism and lowering AUC/Cmax. Clindamycin is an active drug (not a prodrug), so reduced exposure means potential loss of antibacterial efficacy.
Evidence: Theoretical; onset unspecified. Severity rated major where small substrate concentration changes matter.
- Monitor clinical response to clindamycin (treatment efficacy).
- Consider an alternative antibiotic if efficacy is a concern.
- Dose may need individualization by the care team.
What happens
Decreased exposure of the CYP3A4 substrate
Interaction Deep Dive
When sodium phenylbutyrate/taurursodiol (which induces CYP3A4) is taken together with a substrate of CYP3A4, exposure to that substrate can be reduced. This combination should be avoided with CYP3A4 substrates for which even a minor shift in plasma concentration could cause serious toxicities or a loss of efficacy1.
Why it happens (mechanism)
Induction of CYP3A4 substrate metabolism by sodium phenylbutyrate/taurursodiol
How to manage this interaction
The most important thing: keep taking both medications exactly as prescribed unless your care team tells you otherwise.
Because taurursodiol may lower how much clindamycin stays in your system, your team may:
- Watch more closely to make sure your infection is clearing as expected.
- Consider a different antibiotic if there is concern about the antibiotic working fully.
- Adjust and individualize your treatment as needed.
What you can do: Tell your pharmacist or prescriber that you take both, and report if your infection symptoms are not improving.
Management is individual — confirm any change with your pharmacist or prescriber.
Common questions
Can I take Taurursodiol and Clindamycin together?
Taurursodiol may speed up how fast your body clears clindamycin, which could make the antibiotic less effective. This is a theoretical concern, so keep taking both as prescribed and let your care team monitor that the infection responds. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Taurursodiol and Clindamycin interaction?
It is rated major. Potentially serious — often needs a change or close monitoring.
How quickly could this interaction happen?
The documented onset is "unspecified". The timing of this interaction is not well characterized.
How is the Taurursodiol and Clindamycin interaction managed?
The most important thing: keep taking both medications exactly as prescribed unless your care team tells you otherwise. Because taurursodiol may lower how much clindamycin stays in your system, your team may: Watch more closely to make sure your infection is clearing as expected. Consider a different antibiotic if there is concern about the antibiotic working fully. Adjust and individualize your t… Management is individual — always follow your own care team's guidance.
How strong is the evidence for this interaction?
The evidence is graded "theoretical". Predicted from the drugs' pharmacology; not yet confirmed in people.
From our Q&A
Real reader questions about these medications, each personally answered by our pharmacist:
Questions for your pharmacist
- Does my dose of Taurursodiol or Clindamycin need adjusting while I take them together?
- What symptoms should prompt me to call you or my prescriber right away?
- Does the timing of my doses matter for this combination?
- Is there a safer alternative to one of these medications for me?
References (1)
- Product Information: RELYVRIO(TM) oral powder for suspension, sodium phenylbutyrate taurursodiol oral powder for suspension. Amylyx Pharmaceuticals Inc (per FDA), Cambridge, MA, 2022.
Keep reading about Clindamycin
Keep reading about Taurursodiol
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Prescription drugs aren't the whole picture — herbal and dietary supplements can interact with them too. From the evidence-graded Natural Medicines database:
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