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Questran vs. Bismuth subsalicylate

Head-to-head comparisons of medication uses, side effects, warnings, and more.

Key takeaways

Cholestyramine (Prevalite) and bismuth subsalicylate (Pepto-Bismol) are used for different health issues and belong to different medication classes. Cholestyramine is a bile acid sequestrant that helps lower cholesterol and treats itching caused by bile duct blockage. It is available only by prescription and comes in a powder form that you mix with liquids. On the other hand, bismuth subsalicylate is an over-the-counter antidiarrheal that treats diarrhea and upset stomach symptoms like gas and nausea. It comes in various forms, including chewable tablets and liquid. While cholestyramine can cause constipation and requires careful timing with other medications, bismuth subsalicylate can cause dark-colored stools and tongue and should not be used for more than two days. Additionally, bismuth subsalicylate is not safe for children under the age of 12, due to the risk of Reye's syndrome, whereas cholestyramine has no such age restriction.

Cholestyramine

 

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Bismuth subsalicylate

(Pepto-Bismol)

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Summary for Questran

Prescription only

Cholestyramine is a bile acid sequestrant used to treat adults with high cholesterol and itching caused by bile duct problems. It comes as a powder in packets or a can that you mix with liquid to make an oral suspension before taking it. You take a dose by mouth 1 to 6 times a day, depending on your condition. The most common side effect is constipation.

Indications for Questran

Pros and Cons for Questran

Pros

  • Can help lower cholesterol if diet and exercise alone haven’t worked
  • Works only in your gut so it doesn’t get absorbed into your bloodstream
  • Powder can be mixed with foods like soup, applesauce, crushed pineapple, or pureed fruit
  • Available in regular and light (lower sugar) options

Cons

  • Can cause constipation and stomach discomfort
  • Interacts with many medications
  • Might need to be taken multiple times a day
  • Can reduce absorption of fat-soluble vitamins (A, D, E, and K), especially if taken for a long time

Common Side Effects for Questran

  • Constipation

Warnings for Questran

  • Higher risk of bleeding
  • Risk of acid imbalance
  • Constipation
  • Interactions with other medications
  • Caution in people with phenylketonuria (PKU) - light formulation only

Summary for Bismuth subsalicylate

Over-the-counter

Bismuth subsalicylate (Pepto-Bismol) is a salicylate antidiarrheal medication. It's used to ease diarrhea and symptoms of an upset stomach (e.g., gas, nausea) in adults and kids ages 12 years and older. This medication is taken by mouth, typically once every 30 minutes to an hour, as needed. Bismuth subsalicylate (Pepto-Bismol) is found over the counter in several different formulations, such as chewable tablets and oral solutions. Side effects of this medication include nausea, changes in taste, dark-colored tongue, and black stool.

Indications for Bismuth subsalicylate

Pros and Cons for Bismuth subsalicylate

Pros

  • Treats a wide variety of stomach-related symptoms
  • Available as a lower-cost generic medication
  • Available in chewable tablets or liquid for people who have difficulty swallowing pills
  • Can be taken with or without food

Cons

  • Shouldn’t be taken for longer than 2 days
  • Can cause darkening of the tongue or stools
  • Might need to take it multiple times per day
  • Not for children less than 12 years of age due to higher risk of Reye's syndrome

Common Side Effects for Bismuth subsalicylate

  • Nausea
  • Bitter taste in mouth
  • Diarrhea
  • Dark-colored stools

Warnings for Bismuth subsalicylate

  • Reye's syndrome in children
  • Salicylate toxicity
  • Allergic reactions

Prices with our coupons for Questran vs. Bismuth subsalicylate

Price Card Drug Icon
Cholestyramine1 carton / 60 packets of 9g
$46.75$62.18
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Bismuth Subsalicylate112 chewable tablets / 262mg
$17.18-
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