Drug Interaction Report

Clindamycin Vaginal and Kaolin: Interaction Details

Name: Clindamycin Vaginal and Kaolin Interaction
Creator: Dr. Brian Staiger, PharmD, BCPS

A pharmacist-reviewed analysis of the Clindamycin Vaginal and Kaolin interaction: the documented clinical effects, severity rating, onset, mechanism, and management considerations, with cited references throughout.

AI-assisted, pharmacist-reviewed · Source data updated Aug 8, 2026 · Sources: FDA labeling, DDInter 2.0, cited literature

Clindamycin Vaginal

Cleocin Cleocin® Vaginal Suppository Clindesse Clindesse® Vaginal Cream

Kaolin

Pet Pectillin

Medically reviewed by

Dr. Brian Staiger, PharmD, BCPS

Updated Aug 8, 2026

Editorial policy · Data sources

Interaction severity

Moderate

Can be significant — usually manageable with monitoring.

Minor

Moderate

Major

Contraindicated

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.

Of 78 documented Clindamycin Vaginal interactions, 18 are rated moderate — including this one.

Onset

rapid

Evidence

theoretical

Severity

Moderate

What happens

Decreased clindamycin effectiveness

Interaction Deep Dive

When lincomycin or clindamycin are given concurrently with kaolin their absorption is reduced by greater than 70% and greater than 60% respectively¹².

Why it happens (mechanism)

Decreased absorption

Common questions

Can I take Clindamycin Vaginal and Kaolin together?

Decreased clindamycin effectiveness Always confirm with your pharmacist or prescriber before making any change.

How serious is the Clindamycin Vaginal and Kaolin interaction?

It is rated moderate. Can be significant — usually manageable with monitoring.

How quickly could this interaction happen?

The documented onset is "rapid". Effects can appear quickly, often within about 24 hours of combining the drugs.

How strong is the evidence for this interaction?

The evidence is graded "theoretical". Predicted from the drugs' pharmacology; not yet confirmed in people.

Questions for your pharmacist

Does my dose of Clindamycin Vaginal or Kaolin 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 anything you'd monitor while I'm on both?

References (2)

McCall CE, Steigbigel NH, & Finland M: Lincomycin: activity in vitro and absorption and excretion in normal young men. Am J Med Sci 1967; 254:144-155.
McGehee RF Jr, Smith CB, Wilcox C, et al: Comparative studies of antibacterial activity in vitro and absorption and excretion of lincomycin and clinimycin. Am J Med Sci 1968; 256:279-292. PubMed

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Clindamycin Vaginal

Keep reading about Clindamycin Vaginal

All Clindamycin Vaginal interactions (78) Clindamycin Vaginal drug information

Also serious with: Mifepristone Levoketoconazole Ensitrelvir Apalutamide

Kaolin

Keep reading about Kaolin

All Kaolin interactions (7)

Also serious with: Digoxin Hydroxychloroquine

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HelloPharmacist doesn't license one of the big commercial interaction databases, so what you'll find here is not a complete list of every known drug interaction. Instead, each entry is researched, analyzed, and written up individually — documented from the published literature, reviewed by a pharmacist, and cited so you can check every source yourself.

If a combination isn't listed here, it means we haven't documented it yet — never that it's safe. For screening a full medication list, we recommend pairing this site with a comprehensive tool like the Drugs.com Interaction Checker and, most importantly, a review by your own pharmacist. For a deep, plain-English, fully sourced explanation of a specific documented interaction — that's exactly what we built this for.

This information is for education, not a substitute for professional medical advice. Do not start, stop, or change any medication without talking to your pharmacist or prescriber.