Lanreotide 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
Lanreotide
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.
Here's what's going on. Clindamycin is an antibiotic that your liver breaks down using an enzyme called CYP3A4. Lanreotide (a medicine that lowers growth hormone) may slow that enzyme down a bit. In theory, that could let clindamycin build up a little higher in your blood, which might make side effects like stomach upset or diarrhea more likely.
The good news: this concern is theoretical, meaning it is based on how these drugs work rather than clear reports of harm. If both are prescribed for you, your care team can watch how you're doing and adjust things as needed. Just keep taking both as directed and let your pharmacist or doctor know how you feel.
Mechanism: Somatostatin analogs such as lanreotide may inhibit hepatic CYP enzymes secondary to growth hormone suppression. Clindamycin is a CYP3A4 substrate, so reduced metabolism could increase its plasma exposure (AUC/Cmax). Neither agent is a prodrug requiring activation, so the expected effect is increased clindamycin exposure and potentially enhanced adverse effects (GI toxicity, C. difficile risk).
- Direction: increased CYP3A4 substrate exposure
- Evidence: theoretical; onset unspecified; magnitude not quantified
- Management: avoid combining lanreotide with low-therapeutic-index CYP3A4 substrates; clindamycin has a relatively wide margin, but if co-used, monitor clinically and consider substrate dose adjustment individualized to the patient.
What happens
Altered exposure to CYP3A4 substrate
Interaction Deep Dive
Because they suppress growth hormone, somatostatin analogs like lanreotide can secondarily inhibit CYP enzymes, which in turn may alter the plasma levels of a CYP3A4 substrate. For this reason, lanreotide should not be given together with a CYP3A4 substrate that has a narrow therapeutic index. When lanreotide must be administered alongside a drug that undergoes primary hepatic metabolism, a dose adjustment of that substrate should be considered1.
Why it happens (mechanism)
Inhibition of metabolism of CYP3A4 substrate secondary to lanreotide suppression of growth hormone
How to manage this interaction
What your care team may do:
- Keep taking both medicines exactly as prescribed unless told otherwise.
- For drugs with a very narrow safety margin, prescribers often avoid this combination; clindamycin is generally more forgiving, but your team may still watch you more closely.
- If both are needed, the clindamycin dose may be adjusted and individualized by your care team.
- Report any worsening diarrhea, stomach cramps, or unusual side effects promptly.
Talk to your pharmacist or prescriber before making any changes so they can tailor your dosing and monitoring.
Management is individual — confirm any change with your pharmacist or prescriber.
Common questions
Can I take Lanreotide and Clindamycin together?
Lanreotide could theoretically raise clindamycin levels by slowing its breakdown, so keep taking both as prescribed and let your care team monitor you and adjust the dose if needed. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Lanreotide 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 Lanreotide and Clindamycin interaction managed?
What your care team may do: Keep taking both medicines exactly as prescribed unless told otherwise. For drugs with a very narrow safety margin, prescribers often avoid this combination; clindamycin is generally more forgiving, but your team may still watch you more closely. If both are needed, the clindamycin dose may be adjusted and individualized by your care team. Report any worsening diarrhea,… 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 Lanreotide 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: SOMATULINE(R) DEPOT subcutaneous injection, lanreotide subcutaneous injection. Ipsen Biopharmaceuticals Inc (per manufacturer), Basking Ridge, NJ, 2017. DailyMed
Keep reading about Clindamycin
Keep reading about Lanreotide
These medications also interact with supplements
Prescription drugs aren't the whole picture — herbal and dietary supplements can interact with them too. From the evidence-graded Natural Medicines database:
major · moderate · minor — check everything you take with our drug–supplement interaction checker.
Check another combination
Our instant two-drug interaction checker is almost here.
Still have questions about this combination?
Every question gets a real answer from a licensed pharmacist — free, and usually within a day.
Ask the pharmacist