Questran vs. Colestid for High Cholesterol: Important Differences and Potential Risks.

Key takeaways

Cholestyramine (Prevalite) and colestipol (Colestid) are both bile acid sequestrants used to lower cholesterol, but they have some differences. Cholestyramine is available only as a powder that you mix with a liquid, while colestipol comes in both tablet and granule forms. Cholestyramine can also treat itching caused by bile duct blockage, which colestipol does not. Both medications can cause constipation, but colestipol tablets are noted to be large and may be hard to swallow. Cholestyramine can lead to tooth discoloration and decay if not taken properly, a side effect not mentioned for colestipol. Additionally, both medications can interfere with the absorption of other medications and vitamins, so you need to space out their intake from other medications. Both are available in lower-cost, generic forms.

Cholestyramine

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Colestipol

(Colestid)

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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

High cholesterol, added onto a heart-healthy diet and exercise
Itching caused by bile duct problems

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 Colestid

Prescription only

Colestipol, also known by its brand name Colestid, is a bile acid sequestrant that's used to treat high cholesterol in adults. It should be taken along with having a balanced diet and exercise routine to help lower cholesterol. The tablets and granules for suspension are taken either once per day or many times per day, depending on the dose. Side effects are generally limited to the stomach and can include constipation, bloating, and stomach pain. Colestipol (Colestid) has brand-name and generic versions.

Indications for Colestid

High cholesterol in adults; added onto a heart-healthy diet and exercise

Pros and Cons for Colestid

Pros

Available as tablets and granules for suspension
Can take with or without food
An alternative to a statin

Cons

Not a first-choice medication for lowering cholesterol
Need to take other medications at least 1 hour before or 4 hours after colestipol (Colestid)
Might need to take multiple times per day, especially if you're taking higher doses or if you're having side effects (e.g., stomach upset)

Common Side Effects for Colestid

Constipation

Warnings for Colestid

Risk of choking
Low vitamin A, D, E, and K and folic acid
Higher risk of bleeding
Must separate from other medications
Caution in people with phenylketonuria (PKU) - granules for oral suspension only