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Bismuth Subsalicylate

Bismuth Subsalicylate 30 Tablets Chewable

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What is Bismuth Subsalicylate?

Bismuth Subsalicylate is a chewable medication used to help relieve diarrhea, heartburn, and upset stomach. It is suitable for adults and older children, and your healthcare provider will determine the right dose for you.

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What is Bismuth Subsalicylate ?

Bismuth Subsalicylate is a chewable medication used to help relieve diarrhea, heartburn, and upset stomach. It is suitable for adults and older children, and your healthcare provider will determine the right dose for you.

  • Rectal bleeding, blood or mucus in your stools
  • Ringing in your ears, or changes in your hearing
  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing
  • Behavior changes along with nausea and vomiting (in children or teenagers)
  • Tell your doctor if you are pregnant or breastfeeding, or if you have diabetes, gout, arthritis, or bloody or black stools.
  • Do not give this medicine to a child or teenager who has chicken pox or symptoms of a virus or the flu, unless your doctor has told you to. This medicine may cause a rare but serious illness called Reye syndrome.
  • This medicine can cause diarrhea. Call your doctor if the diarrhea becomes severe, does not stop, or is bloody. Do not take any medicine to stop diarrhea until you have talked to your doctor. Diarrhea can occur 2 months or more after you stop taking this medicine.
  • Call your doctor if your symptoms do not improve or if they get worse. If you still have diarrhea after you have been using this medicine for 2 days, stop using it and call your doctor.
  • Your tongue or stools may become dark when you use this medicine. This is only temporary and will not hurt you. Ask your doctor about this if you have any concerns.
  • Keep all medicine out of the reach of children. Never share your medicine with anyone.
What is bismuth subsalicylate used for?

It relieves diarrhea, including traveler's diarrhea, and eases upset-stomach symptoms such as heartburn, indigestion, nausea, gas, belching, and a feeling of fullness. It is sold over the counter under brand names like Pepto-Bismol and Kaopectate. Doctors also sometimes use it off-label, under medical supervision, as part of a combination treatment for H. pylori stomach infections.

Why does bismuth subsalicylate turn your tongue and stool black?

The bismuth in the medicine can react with tiny amounts of sulfur in your saliva and digestive tract, forming a harmless dark substance. This causes a temporary darkening of the tongue and black-colored stools. It is expected, not dangerous, and goes away after you stop taking the product.

Can you take bismuth subsalicylate if you're allergic to aspirin?

No. Bismuth subsalicylate contains a salicylate, which is chemically related to aspirin, so people with an aspirin or salicylate allergy should avoid it. If you are unsure whether it is safe for you, ask your pharmacist or doctor and consider a non-salicylate alternative such as loperamide for diarrhea.

Is bismuth subsalicylate safe for children?

It should not be given to children or teenagers who are recovering from the flu or chickenpox because of the risk of Reye's syndrome, a rare but potentially fatal condition. It is also not recommended for children under 12 without medical advice. Always check with a pediatrician or pharmacist before giving it to a young person.

How long does it take for bismuth subsalicylate to work?

Many people feel relief from diarrhea or upset stomach fairly soon after a dose, and doses can be repeated as directed on the label. If your symptoms last more than two days, you have a high fever, or you notice blood, stop use and contact your provider, since these can be signs of a more serious problem.

How much does Bismuth Subsalicylate 30 Tablets Chewable cost without insurance?
The price of Bismuth Subsalicylate 30 Tablets Chewable without insurance varies by pharmacy, dosage, and quantity. Rx.com compares cash prices at more than 60,000 US pharmacies so you can find the lowest price near you. Many people save 60–90% off retail prices with a free Rx.com coupon.
What are the common side effects of Bismuth Subsalicylate 30 Tablets Chewable?
Common side effects of Bismuth Subsalicylate 30 Tablets Chewable may include: Rectal bleeding, blood or mucus in your stools, Ringing in your ears, or changes in your hearing, Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing, Behavior changes along with nausea and vomiting (in children or teenagers). This is not a complete list — consult your pharmacist or doctor for full side effect information.
Is there a generic version of Bismuth Subsalicylate 30 Tablets Chewable?
Generic versions may be available for Bismuth Subsalicylate 30 Tablets Chewable. Generics contain the same active ingredients as brand-name drugs and are typically 80–90% cheaper. Search Bismuth Subsalicylate 30 Tablets Chewable on Rx.com to compare generic and brand prices at pharmacies near you.
What is the cheapest pharmacy for Bismuth Subsalicylate 30 Tablets Chewable?
The cheapest pharmacy for Bismuth Subsalicylate 30 Tablets Chewable depends on your location and dosage. Rx.com compares prices at CVS, Walgreens, Walmart, Kroger, Costco, and thousands of independent pharmacies. Enter your ZIP code on Rx.com to find the lowest price for Bismuth Subsalicylate 30 Tablets Chewable near you.

Bismuth Subsalicylate Coupons & Prices

Bismuth Subsalicylate 30 Tablets Chewable

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Looking for a bismuth subsalicylate coupon? Bismuth subsalicylate is the low-cost, over-the-counter medicine best known by the brand names Pepto-Bismol and Kaopectate. It calms diarrhea (including traveler's diarrhea) and eases common upset-stomach symptoms like heartburn, indigestion, nausea, gas, and that too-full feeling. Because it is sold without a prescription, prices swing a lot from one pharmacy to the next, so it pays to compare. Enter your ZIP above to see today's price at pharmacies near you and print or show an Rx.com coupon at the counter.

What is bismuth subsalicylate and how does it work?

Bismuth subsalicylate is an antidiarrheal and stomach-settling agent that belongs to the salicylate family, which means it is chemically related to aspirin. It works in a few ways at once: it coats and soothes the lining of the digestive tract, reduces the amount of fluid the intestines release, and has a mild antibacterial effect that can help with certain stomach bugs. This combination is why it can quiet diarrhea while also helping with nausea, heartburn, indigestion, gas, and belching.

You will find it as a generic (generic is available) and under many brand and store names, including Pepto-Bismol, Kaopectate, Bismatrol, Pink Bismuth, Bismarex, Diotame, and Kao-Tin. It comes as chewable tablets, caplets, and liquids. Doctors also sometimes use it off-label as one part of a multi-drug (quadruple) treatment plan for an H. pylori stomach infection, which should only be done under medical guidance.

How to save on bismuth subsalicylate with an Rx.com coupon

Bismuth subsalicylate is sold over the counter, but that does not mean every store charges the same price, and the generic version is often cheaper than the name brand for the very same active ingredient. Some shoppers also find that an OTC product costs less with a coupon, or when a provider writes it as a prescription, than paying full retail off the shelf.

To find the best deal, enter your ZIP code above to see today's price at pharmacies near you, then bring the free Rx.com coupon to the counter. There is no membership required and no manufacturer copay card involved with this OTC medicine. Because it comes in tablets, caplets, and liquids, it is worth checking the price on each form and on both the brand and generic when you compare.

How it compares to other stomach and heartburn options

Bismuth subsalicylate is a good all-purpose choice because it tackles both diarrhea and upset stomach, but other over-the-counter medicines are more targeted:

  • For diarrhea alone: loperamide (Imodium) slows the gut directly and is not a salicylate, which can matter if you cannot take aspirin-related products.
  • For heartburn and acid: famotidine (Pepcid) and omeprazole (Prilosec) lower stomach acid, while calcium carbonate (Tums) neutralizes acid quickly for fast, short-term relief.
  • Older acid reducer: ranitidine (formerly Zantac) was once widely used for heartburn; talk to a pharmacist about current options.

Which one fits best depends on your main symptom and your other health conditions. A pharmacist can help you pick, and you can compare prices on each of these on Rx.com.

Safety and what to watch for

Bismuth subsalicylate is generally well tolerated, but because it contains a salicylate (aspirin-like ingredient) there are important cautions. Do not give it to children or teenagers who are recovering from the flu or chickenpox, because of the risk of Reye's syndrome, a rare but serious condition. It is not recommended for children under 12 without medical advice. Avoid it if you have an aspirin or salicylate allergy, active stomach bleeding or an ulcer, or a bleeding disorder, and avoid it in late pregnancy.

It can thin the blood, so use caution if you take an anticoagulant like warfarin or other salicylates, and check with your provider if you take certain diabetes medicines, gout drugs, or methotrexate. A temporary darkening of the tongue and black stools is harmless and expected. However, ringing in the ears (tinnitus) can be a warning sign of too much salicylate, so stop taking it and seek advice if that happens. This is general information, not medical advice, so talk with your pharmacist or doctor about what is right for you.

Sources & accuracy

This Bismuth Subsalicylate information was written and reviewed against authoritative U.S. medical sources — MedlinePlus (U.S. National Library of Medicine), DailyMed, and FDA prescribing information — and checked for accuracy. It is provided for education and is not a substitute for professional medical advice.

Verify the official label: Bismuth Subsalicylate on DailyMed (FDA)

Reviewed against FDA labeling · Last reviewed July 2026

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Medical disclaimer: This information is provided for general educational purposes only and is not medical advice. It is not a substitute for professional diagnosis or treatment. Always consult a licensed physician, pharmacist, or other qualified healthcare provider before starting, stopping, or changing any medication or treatment. Never disregard professional medical advice or delay seeking it because of something you read here. If you think you may have a medical emergency, call your doctor or 911 immediately.


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