On this page · 6 sections

Kaopectate (Oral)

Generic name: bismuth subsalicylate

Brand names: Bismatrol, Diotame, Kaopectate, Kapectolin, Kola-Pectin, Pepto Bismol

Last updated June 6, 2026 0 views
Share

Uses for Kaopectate

Bismuth subsalicylate is used to treat diarrhea in adults and teenagers. It also helps relieve symptoms of an upset stomach, including heartburn, indigestion, and nausea in adults and teenagers.

This medicine can be bought without a prescription.

This section was rewritten for readability and reviewed for meaning.

Precautions while using Kaopectate

Check the labels of all over-the-counter (OTC), nonprescription, and prescription medicines you are currently taking. If any contain aspirin or other salicylates, be especially cautious. Using other salicylate-containing products while taking this medicine may lead to overdose. If you have any questions about this, consult your health care professional.

For diabetic patients:

  • False urine sugar test results may happen if you regularly take large amounts of bismuth subsalicylate or other salicylates.
  • Smaller doses or occasional use of bismuth subsalicylate usually will not impact urine sugar tests. However, check with your health care professional (especially if your diabetes is not well-controlled) if: you are unsure how much salicylate you take daily. you notice any change in your urine sugar test results. you have any other questions about this potential issue.

If you think that you or someone else may have taken an overdose, seek emergency help immediately. Taking an overdose of this medicine may cause unconsciousness or death. Signs of overdose include convulsions (seizures), hearing loss, confusion, ringing or buzzing in the ears, severe drowsiness or tiredness, severe excitement or nervousness, and fast or deep breathing.

If you are using this medicine for diarrhea, check with your doctor:

  • if your symptoms do not improve within 2 days or if they worsen.
  • if you also have a high fever.

This section was rewritten for readability and reviewed for meaning.

Before using Kaopectate

In deciding to use a medicine, you and your doctor need to think about the risks and benefits. Here are some important points to consider for this medicine:

Allergies

Inform your doctor if you have ever had any unusual or allergic reactions to this medicine or any other medicines. Also, let your healthcare professional know if you have any other allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.

Pediatric

This medicine should not be given to children younger than 12 years old. Diarrhea can cause fluid loss that may lead to serious health issues. In older children with diarrhea, this medicine may be used, but it is very important to provide enough liquids to replace the fluids lost by the body. If you have questions about this, consult your healthcare professional.

Children are usually more sensitive to salicylates, particularly if they have a fever or have lost a lot of fluids from vomiting, diarrhea, or sweating.

The bismuth in this medicine may lead to severe constipation in children.

Additionally, do not use this medicine to treat nausea or vomiting in children or teenagers who have or are recovering from the flu or chickenpox. If nausea or vomiting occurs, contact the child's doctor immediately, as it could be an early sign of Reye's syndrome.

Geriatric

Diarrhea can cause fluid loss that may lead to serious health issues. For this reason, elderly individuals with diarrhea should not take this medicine without first consulting their doctor. It is also very important to ensure enough liquids are consumed to replace the fluids lost by the body. If you have questions about this, consult your healthcare professional.

Elderly individuals may be more sensitive to the effects of salicylates, increasing the likelihood of side effects during treatment. Additionally, the bismuth in this medicine may cause severe constipation in the elderly.

Breast Feeding

Studies in breastfeeding women have shown harmful effects on infants. You should be prescribed an alternative to this medication or stop breastfeeding while using this medicine.

Interactions with Medicines

Some medicines should not be used together, while others may be used together even if an interaction could occur. In these cases, your doctor may adjust the dose or take other precautions. When using this medicine, it is especially important for your healthcare professional to know if you are taking any of the medicines listed below. The following interactions are significant but not all-inclusive.

Using this medicine with any of the following medicines is usually not recommended, but may be necessary in some cases. If both medicines are prescribed together, your doctor may change the dose or frequency of one or both of the medicines.

  • Aceclofenac
  • Acemetacin
  • Amtolmetin Guacil
  • Balsalazide
  • Bromfenac
  • Bufexamac
  • Celecoxib
  • Choline Magnesium Trisalicylate
  • Choline Salicylate
  • Clonixin
  • Dexibuprofen
  • Dexketoprofen
  • Diflunisal
  • Digoxin
  • Dipyrone
  • Droxicam
  • Etodolac
  • Etofenamate
  • Etoricoxib
  • Felbinac
  • Fenoprofen
  • Fepradinol
  • Feprazone
  • Floctafenine
  • Flufenamic Acid
  • Flurbiprofen
  • Furosemide
  • Ibuprofen
  • Ketoprofen
  • Lornoxicam
  • Loxoprofen
  • Lumiracoxib
  • Magnesium Salicylate
  • Meclofenamate
  • Mefenamic Acid
  • Meloxicam
  • Mesalamine
  • Morniflumate
  • Nabumetone
  • Naproxen
  • Nepafenac
  • Niflumic Acid
  • Nimesulide
  • Nimesulide Beta Cyclodextrin
  • Olsalazine
  • Oxaprozin
  • Oxyphenbutazone
  • Parecoxib
  • Phenylbutazone
  • Phenyl Salicylate
  • Piketoprofen
  • Piroxicam
  • Proglumetacin
  • Propyphenazone
  • Proquazone
  • Rofecoxib
  • Salicylamide
  • Salicylic Acid
  • Salsalate
  • Sodium Salicylate
  • Sulfasalazine
  • Sulindac
  • Tenoxicam
  • Tiaprofenic Acid
  • Tolfenamic Acid
  • Tolmetin
  • Trolamine Salicylate
  • Valdecoxib

Using this medicine with any of the following medicines may increase the risk of certain side effects, but using both may be the best treatment for you. If both medicines are prescribed together, your doctor may change the dose or frequency of one or both of the medicines.

  • Doxycycline
  • Omadacycline
  • Probenecid
  • Sulfinpyrazone
  • Tamarind

Interactions with Food/Tobacco/Alcohol

Some medicines should not be taken around mealtime or with certain foods due to possible interactions. Using alcohol or tobacco with certain medicines may also lead to interactions. Discuss with your healthcare professional about using your medicine with food, alcohol, or tobacco.

Other Medical Problems

Other medical issues may affect the use of this medicine. Be sure to inform your doctor if you have any other medical problems, especially:

  • Dysentery—This condition may worsen; a different treatment may be necessary.
  • Gout—The salicylate in this medicine may worsen gout and reduce the effectiveness of gout medications.
  • Hemophilia or other bleeding problems—The salicylate in this medicine may increase the risk of bleeding.
  • Kidney disease—There is a higher chance of side effects because the body may struggle to eliminate bismuth subsalicylate.
  • Stomach ulcer—Using this medicine may make the ulcer worse.

This section was rewritten for readability and reviewed for meaning.

Side Effects of Kaopectate

Along with its necessary effects, this medicine may cause some unwanted effects. Not all of these side effects may happen, but if they do, they may need medical attention.

Check with your doctor right away if any of the following side effects occur:

In some patients, bismuth subsalicylate may cause a dark tongue and/or grayish black stools. This is only temporary and will go away when you stop taking this medicine.

  • Anxiety
  • any loss of hearing
  • confusion
  • severe constipation
  • severe or continuing diarrhea
  • difficulty speaking or slurred speech
  • dizziness or lightheadedness
  • severe drowsiness
  • fast or deep breathing
  • severe or continuing headache
  • increased sweating
  • increased thirst
  • mental depression
  • muscle spasms (especially in the face, neck, and back)
  • muscle weakness
  • severe or continuing nausea or vomiting
  • continuing ringing or buzzing in the ears
  • severe or continuing stomach pain
  • trembling
  • uncontrolled flapping movements of the hands (especially in elderly patients) or other uncontrolled body movements
  • vision problems

Other side effects not listed may also happen in some patients. If you notice any other effects, check with your healthcare professional.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

In the U.S.

  • Bismatrol
  • Diotame
  • Kaopectate
  • Kapectolin
  • Kola-Pectin
  • Pepto Bismol

In Canada

  • Bismuth Extra Strength
  • Bismuth Original Formula
  • Compliments Bismuth - Regular Strength
  • Exact Bismuth - Extra Strength
  • Exact Bismuth - Regular Strength
  • GoodSense Bismuth - Regular Strength
  • Life Brand Bismuth - Extra Strength
  • Life Brand Bismuth - Regular Strength
  • Option+ Bismuth - Regular Strength
  • Pepto-Bismol
  • Pharmasave Bismuth - Regular Strength
  • Selection Bismuth - Regular Strength

Available Dosage Forms:

  • Suspension
  • Tablet, Chewable
  • Capsule, Liquid Filled
  • Tablet

Therapeutic Class: Antacid, Bismuth Containing

Chemical Class: Salicylate, Non-Aspirin

This section was rewritten for readability and reviewed for meaning.

Proper use of Kaopectate

Make certain your health care professional knows if you are on any special diet, such as a low-sodium or low-sugar diet.

For safe and effective use of this medicine:

  • Follow your doctor's instructions if this medicine was prescribed.
  • Follow the manufacturer's package directions if you are treating yourself.

For patients using this medicine to treat diarrhea:

  • It is very important that the fluid lost by the body be replaced and that a proper diet be followed. For the first 24 hours you should drink plenty of clear liquids, such as ginger ale, decaffeinated cola, decaffeinated tea, broth, and gelatin. During the next 24 hours you may eat bland foods, such as cooked cereals, bread, crackers, and applesauce. Fruits, vegetables, fried or spicy foods, bran, candy, and caffeine and alcoholic beverages may make the diarrhea worse.
  • If too much fluid has been lost by the body due to the diarrhea a serious condition may develop. Check with your doctor as soon as possible if any of the following signs of too much fluid loss occur: Decreased urination Dizziness and lightheadedness Dryness of mouth Increased thirst Wrinkled skin

If you are taking the oral suspension: Use the dose cup that is included to measure out the right amount of medicine. If you are unsure, contact your doctor or pharmacist.

If you are taking the oral tablets: Swallow the tablet whole with a glass of water. Do not crush or chew the tablet.

If you are taking the chewable tablets: Chew up the tablet or allow it to completely disintegrate in your mouth before swallowing it.

Dosing

The dose of this medicine will be different for different patients. Follow your doctor's orders or the directions on the label. The following information includes only the average doses of this medicine. If your dose is different, do not change it unless your doctor tells you to do so.

The amount of medicine that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine.

  • For oral dosage form (suspension): For diarrhea or upset stomach: Adults and teenagers—The usual dose is 2 tablespoonfuls every half-hour to one hour if needed. You should not take more than 16 tablespoonfuls of the regular-strength suspension or 8 tablespoonfuls of the concentrate in twenty-four hours. Children—Should not be used in children younger than 12 years of age.
  • For oral dosage forms (tablets or chewable tablets): For diarrhea or upset stomach: Adults and teenagers—The usual dose is 2 tablets every half-hour to one hour. You should not take more than 16 tablets in twenty-four hours. Children—Should not be used in children younger than 12 years of age.

Missed Dose

If you miss a dose of this medicine, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not double doses.

Storage

Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Keep from freezing.

Keep out of the reach of children.

Do not keep outdated medicine or medicine no longer needed.

Frequently asked questions

  • My stool has changed color. What does it mean?
  • What causes black hairy tongue?

Related medicines

Before you take this medicine: the information on this page is general and may not cover your personal circumstances. Read the label supplied with your medicine and ask a pharmacist or doctor if you are unsure, especially if you are pregnant, breastfeeding, taking other medicines or managing a long-term condition.
General medicine information Consumer-friendly language

Content is provided for education and is not medical advice. See our medical disclaimer.