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Kaolin is a hydrated aluminum silicate and has been used for hundreds of years as a base material in many products from plastics to paper, cosmetics to pharmaceuticals and much more. In medicine, kaolin has traditionally been prescribed for controlling diarrhea internally, as a drying agent and moisturizer when used topically, as well to relieve discomfort from diaper rash and rectal itching. Kaolin is often prescribed for poison oak, poison sumac, and poison ivy as its drying qualities react with and aid in the drying of oozing sores. In radiation therapy patients, kaolin may be prescribed to reduce swelling and soreness that can occur in the mouth during treatments. Kaolin has a wide variety of uses in veterinary medicine as well.


Kaolin has multiple uses in modern medicine and comes in various forms. Only your doctor will know which form is right for your condition. Follow your doctor's directions on dosage and the correct use of this drug. Always take the prescribed amount and never exceed your doctor's recommendations on dosage. Consult with your primary care doctor or compounding pharmacist if you have questions while taking this drug.


Side effects may differ from person to person, but in general kaolin is tolerated well by most patients. The most common side effect seen with the use of kaolin is:

  • Constipation

NOTE: Constipation more likely will occur as a side effect in children and seniors.

Of course it is possible for anyone to experience other side effects, and possibly severe side effects. Watch closely, observe, and be aware of any side effects that present and seek medical assistance if you feel it is warranted, or if any side effects are increasing, worsening, or staying around and persisting.


All patients considering the use of kaolin should consult with their physician before beginning use. A complete physical, medical consultation, and drug interaction review is necessary to be sure that kaolin is a good choice for your treatment and that it will not negatively interact with any medications you are currently taking or have recently taken.

Kaolin is contraindicated for anyone using drugs that chelate with aluminum.

Kaolin is contraindicated for breastfeeding mothers.

Kaolin may be contraindicated for pregnancy. Consult with your doctor.

Kaolin may decrease the effectiveness and/or absorption rates of other medications. It is important to provide your physician with a list of ALL medications and drugs, supplements, and herbals that you are taking.

Trimethoprim, quinidine, and digoxin are all known to interact with kaolin. If you are taking any of these, ask your doctor if kaolin is safe for you.

  • "It is rare to find health professionals who are so willing to educate the patient on what they need to know."

    Clair C. | West Hollywood, CA