Kaolin + Fenoprofen Calcium
Fenoprofen Calcium brand name: Nalfon.
We found no known interaction between Kaolin and Fenoprofen Calcium in our sources. Absence of a documented interaction is not the same as proven safety, and does not guarantee one does not exist. Do not start, stop, or change a medication or supplement based on this page; confirm with your pharmacist or doctor first. Additionally, although there is no interaction, the label for Fenoprofen Calcium states a food rule worth keeping to, and the two are separately associated with some of the same side effects, which would make a new symptom harder to attribute to one or the other.
Kaolin and Fenoprofen Calcium
We checked these two against our interaction database. Here is what we found.
No Known Interaction Found
We did not find a documented interaction between Fenoprofen Calcium and Kaolin in our sources. This does not guarantee that the combination is completely free of risk — there is often limited research on supplements and herbal products, especially around drug interactions.
If you decide to take both, the practical routine is simple: add one new thing at a time and note the date you started it. If the combination is going to disagree with you, it usually shows in the first days to a couple of weeks — and a start date turns “I’ve been feeling off” into something a pharmacist can actually work with. Do not stop a prescribed medicine on your own.
Always talk with your pharmacist or doctor before making changes to your medications or supplements, particularly if you take several medications or have an ongoing health condition.
Kaolin safety at a glance
Pregnancy & breastfeeding ratings are from Natural Medicines (Therapeutic Research Center) — the full detail is in the Special populations card below. Safety guidance is general; always confirm with your pharmacist or doctor for your situation.
Why No Interaction Is Listed for Fenoprofen Calcium
Interactions in our licensed database are recorded against drug classes, not just single drug names. Fenoprofen Calcium is filed under 5 classifications — including nonsteroidal anti-inflammatory drugs (nsaids), organic anion transporter 3 (oat3) substrates, organic anion transporter 1 (oat1) substrates. Kaolin has documented interactions with 4 drug classes — the most serious being clindamycin (cleocin) (moderate), digoxin (lanoxin) (moderate) and quinidine (moderate) — and none of Fenoprofen Calcium’s classifications are among them.
Classification data comes from our licensed Natural Medicines dataset. A medication can belong to classes beyond those recorded there, so this describes how the check was run — it is not a safety guarantee.
Kaolin Does Interact With Other Medications
Kaolin has 7 moderate known drug interactions in our database — Fenoprofen Calcium isn’t one of them. If you take anything else, check it against the full list below.
Check Another of Your Medications Against Kaolin
We haven’t checked that one against Kaolin yet — ask our pharmacists directly.
Covers the 2,830 medications we’ve checked against Kaolin. Pick one to open its full report.
Kaolin in Pregnancy & Breastfeeding
When used orally in food amounts. Kaolin has Generally Recognized as Safe (GRAS) status in the US.
When used orally as kaolin-pectin in appropriate amounts.
DISCLAIMER: This tool is intended for informational purposes only, and should not be interpreted as specific medical advice. Patients should consult with a qualified healthcare provider before making decisions about therapies and/or health conditions.© 2026 Therapeutic Research Center
Some Fenoprofen Calcium Products Have a Food Rule — Kaolin Should Not Break It
At least one FDA label for a product containing Fenoprofen Calcium says to take it with food. If you take Kaolin on an empty stomach out of habit, keep them separate — and take Fenoprofen Calcium with a meal where the label says to.
This may not be true of your version. Food instructions belong to the product, not the ingredient: two Fenoprofen Calcium products can carry different directions, and extended-release forms often differ from immediate-release ones. The label we read is quoted below — check the directions on your own box or bottle, or ask your pharmacist, for how to take the exact product you were given.
Fenoprofen Calcium may be administered with meals or with milk.
From the Dosage and Administration section of the FDA label we read for Fenoprofen Calcium — where that label names a specific product, the instruction is that product's. Read the label on DailyMed ›
A food rule is not an interaction — it is about how much of the medicine you absorb. The directions that came with your own product, and your pharmacist, outrank anything on this page.
See Every Supplement That Interacts With Fenoprofen Calcium
This page covers Kaolin only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Fenoprofen Calcium page lists 32 supplements it has a documented interaction with, worst first, each one explained.
The most serious there right now: Activated Charcoal (major), Asarabacca (major), Beer (major), Siberian Cocklebur (major) and Wine (major).
By severity: 5 major · 16 moderate · 11 minor.
From our pharmacist’s overview on the Fenoprofen Calcium page
“The kidneys and the stomach lining take the brunt of any NSAID, and fenoprofen calcium (Nalfon), prescribed for arthritis and other pain, is no exception. This list of 32 interacting supplements deserves real caution; five carry a major rating, and understanding those five comes first.”
Reviewed by 2 · Jul 18, 2026
Where Kaolin and Fenoprofen Calcium Sit Against Everything Else
Out of every supplement and medication people look up on HelloPharmacist, here is where these two land this week — and which way each has been moving.
#918 of 1,452 supplements looked up here in the last 7 days
#2,217 of 2,830 medications looked up here in the last 7 days
Position among everything looked up on this site, not a measure of how commonly either one is used or how important it is. A supplement can climb this list because of a news story. It counts every request to the page, automated ones included, and nothing here identifies anyone.
Where does our data come from?
- Source: the Natural Medicines (TRC Healthcare) clinical database — the evidence-graded professional reference for herb & supplement interactions.
- Citation library: 103,510 references behind our interaction content, 65,311 of them resolved to verified PubMed/DOI sources. See every Kaolin reference on this page ↓
- Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Kaolin and Fenoprofen Calcium records this page draws on were last updated July 10, 2026.
- What “no known interaction” means: no documented interaction in the sources above — not a guarantee of safety. Supplements are studied far less than prescription drugs, so we say exactly what the evidence supports, and nothing more.
About Kaolin
What is Kaolin?
- Diarrhea
- Upset stomach and nausea
- Skincare and facial masks
- Soothing minor skin irritation
- Excessive salivation (traditional)
Kaolin is a soft, white clay mineral that has long been used in antidiarrheal products and skincare because it absorbs water and binds substances in the gut. Older diarrhea products often combined it with pectin, but modern guidelines favor rehydration and other treatments, and high-quality evidence for kaolin alone is limited. It is generally considered low-risk for short-term use, but check with your pharmacist or doctor before use, especially during pregnancy or breastfeeding.
Mineral clay (hydrated aluminum silicate) · Oral suspensions, tablets, powders, topical pastes and masks
An interaction check asks whether these two react with each other — it does not ask whether Kaolin is a good idea for someone in your situation. Here is what our Kaolin record says about it on its own.
Kaolin: dosing
There is no single official supplement dose for kaolin, and products vary widely in strength and formulation. The best approach is to follow the directions on the product label exactly.Do not exceed the recommended amount or use it for longer than directed without medical advice.
From our Kaolin monograph — the full record covers uses, side effects and every documented interaction.
About Fenoprofen
What Is Fenoprofen Used For?
Brand name: Nalfon
Fenoprofen is used to relieve mild to moderate pain in adults. It is also used to reduce the pain, swelling, and stiffness caused by rheumatoid arthritis and osteoarthritis.
These uses are supported by products including Fenoprofen Calcium, Fenopron, and Nalfon capsules. Nalfon is also available as a tablet.
Other Drugs & Kaolin
Browse every other medication we’ve checked against Kaolin — both the ones with a known interaction and the ones without. Select any drug for the full detail.
No drugs match “”.
7 interactions
No interaction 2,822 drugs checked — show the list
We also checked Kaolin against these medications and found no known interaction in our sources. Open any page to confirm.
- Apixaban ›
- Levothyroxine ›
- Amlodipine ›
- Warfarin ›
- Methylphenidate ›
- Sertraline ›
- Abemaciclib ›
- Ivermectin ›
- Testosterone ›
- Acetaminophen ›
- Losartan Potassium ›
- Aspirin ›
- Rosuvastatin ›
- Metoprolol ›
- Clopidogrel ›
- Escitalopram ›
- Rivaroxaban ›
- Atorvastatin ›
- Docusate ›
- Tirzepatide ›
- Ibuprofen ›
- Methamphetamine ›
- Warfarin Sodium ›
- Tadalafil ›
- Valacyclovir ›
- Hydroxyurea ›
- Sumatriptan ›
- Semaglutide ›
- Prednisone ›
- Amitriptyline ›
- Propranolol ›
- Metformin ›
- Lisdexamfetamine ›
- Isotretinoin ›
- Amoxicillin ›
- Methotrexate ›
- Lisinopril ›
- Amlodipine Besylate ›
- Amphetamine ›
- Bendamustine ›
- Bupropion ›
- Fluoxetine ›
- Doxycycline ›
- Azithromycin ›
- Pregabalin ›
- Acyclovir ›
- Lamotrigine ›
- Dextroamphetamine ›
- Gabapentin ›
- Levothyroxine, Liothyronine ›
- Acetaminophen, Codeine ›
- Naproxen ›
- Clonazepam ›
- Quetiapine ›
- Omeprazole ›
- Duloxetine ›
- Letrozole ›
- Methylene Blue ›
- Citalopram ›
- Buspirone ›
Showing the 60 most looked-up of 2,822 medications checked with no known interaction — see the full Kaolin list.
Kaolin References
The 18 references that drive our Kaolin monograph and interaction data, from the evidence-graded Natural Medicines (TRC Healthcare) database. Citations with a link open the study on PubMed or the publisher’s site.
- McEvoy GK, ed. AHFS Drug Information. Bethesda, MD: American Society of Health-System Pharmacists, 1998.
- Barker G, Loftus L, Cuddy P, Barker B. The effects of sucralfate suspension and diphenhydramine syrup plus kaolin-pectin on radiotherapy-induced mucositis. Oral Surg Oral Med Oral Pathol 1991;71:288-93.
- Carnel SB, Blakeslee DB, Oswald SG, Barnes M. Treatment of radiation- and chemotherapy-induced stomatitis. Otolaryngol Head Neck Surg 1990;102:326-30.
- Levin JL, Frank AL, Williams MG, et al. Kaolinosis in a cotton mill worker. Am J Ind Med 1996;29:215-21.
- Chaudhary BA, Kanes GJ, Pool WH. Pleural thickening in mild kaolinosis. South Med J 1997;90:1106-9.
- Altekruse EB, Chaudhary BA, Pearson MG, Morgan WK. Kaolin dust concentrations and pneumoconiosis at a kaolin mine. Thorax 1984;39:436-41.
- Rodin SM, Johnson BF. Pharmacokinetic interactions with digoxin. Clin Pharmacokinet 1988;15:227-44.
- Babhair SA, Tariq M. Effect of magnesium trisilicate and kaolin-pectin on the bioavailability of trimethoprim. Res Commun Chem Pathol Pharmacol 1983;40:165-8.
- Bucci AJ, Myre SA, Tan HS, Shenouda LS. In vitro interaction of quinidine with kaolin and pectin. J Pharm Sci 1981;70:999-1002.
- Allen MD, Greenblatt DJ, Harmatz JS, Smith TW. Effect of magnesium-aluminum hydroxide and kaolin-pectin on absorption of digoxin from tablets and capsules. J Clin Pharmacol 1981;21:26-30. PubMed
- Albert KS, Ayres JW, DiSanto AR, et al. Influence of kaolin-pectin suspension on digoxin bioavailability. J Pharm Sc 1978;67:1582-6.
- Albert KS, et al. Pharmacokinetic evaluation of a drug interaction between kaolin-pectin and clindamycin. J Pharm Sci 1978 67:1579-82.
- Electronic Code of Federal Regulations. Title 21. Part 182 -- Substances Generally Recognized As Safe. Available at: https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?CFRPart=182
- Black RA, Hill DA. Over-the-counter medications in pregnancy. Am Fam Physician 2003;67:2517-24.
- Electronic Code of Federal Regulations. Title 21. Part 335 - Antidiarrheal drug products for over-the-counter human use. Available at: https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?fr=335.50
- Dokoupil M, Marecová K, Handlos P, Brezina P. Death of a female prostitute due to intestinal obstruction by an unknown substance. J Forensic Sci 2019;64(1):289-91. doi: 10.1111/1556-4029.13824. PubMed
- Pain S, Fauconneau B, Bouquet E, Vasse-Terrier L, Pérault-Pochat MC. Severe craving associated with kaolin consumption. Eat Weight Disord 2019;24(2):379-81. doi: 10.1007/s40519-018-0583-1. PubMed
- Attarha BO, Mikulic S, Harris C, Scolapio JS. Kaolin Clay Anemia. Cureus 2021;13(3):e13796.
Medication overviews come from MedlinePlus (NIH); supplement label data from the NIH Dietary Supplement Label Database. Content is written and reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.
Taking Kaolin and Fenoprofen Calcium Together: Common Questions
Is it safe to take Kaolin with Fenoprofen Calcium?
Do Kaolin and Fenoprofen Calcium have any of the same side effects?
Should I take Kaolin and Fenoprofen Calcium at the same time of day?
How was the Kaolin and Fenoprofen Calcium combination checked?
Does Kaolin interact with any other medications?
Does Fenoprofen Calcium interact with any supplements?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
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This information is for education only and is not a substitute for professional medical advice. Always check with your pharmacist or doctor before starting, stopping, or combining supplements and medications.