Cholestyramine is a powder you mix with water or juice and take by mouth. It’s a bile‑acid sequestrant, which means it grabs bile acids in your gut and stops them from being re‑absorbed. By pulling bile acids out, your liver makes more, using up cholesterol to do it. The net result? Lower blood cholesterol levels without needing a statin.
People also use cholestyramine for itching caused by liver disease, for certain types of diarrhea, and even to help with a rare condition called bile‑acid malabsorption. If you’ve been told to start this drug, you probably have high LDL cholesterol or a liver‑related itching problem.
Doctors usually pick cholestyramine when they want a non‑statin option. It’s especially handy if you can’t tolerate statins or if you need an extra push on top of them. The usual adult dose for cholesterol is 4 g taken once or twice a day, mixed with at least 8 oz of fluid. For itching, the dose can be higher – up to 16 g spread over the day.
Because it stays in the gut and isn’t absorbed into the bloodstream, cholestyramine doesn’t have the same heart‑related side effects as some other drugs. It does, however, demand a bit of timing discipline. Take it at least 1 hour before or 4 hours after any other medication, vitamins, or food. This spacing keeps it from binding to other substances and stopping them from working.
The most common complaint is constipation. Drinking plenty of water, adding a fiber supplement, or eating high‑water foods can help. Some people also notice a bloated feeling or mild stomach cramps – these usually settle after a few days.
Because cholestyramine can grab fat‑soluble vitamins (A, D, E, K), many doctors recommend a daily multivitamin that you take far away from the resin. If you’re on thyroid medication, warfarin, or certain antibiotics, you’ll need to schedule them carefully. For example, warfarin’s effect can drop, leading to clot risks, so your doctor might check your INR more often.
Pregnant or breastfeeding folks should talk with their provider first. The drug is generally considered safe, but the extra vitamin loss can be a concern, so monitoring is key.
One practical tip: keep the powder sealed tightly and store it in a cool, dry place. Moisture can clump the resin and make mixing harder.
Overall, cholestyramine can be a solid part of a cholesterol‑lowering plan, especially if you pair it with a heart‑healthy diet and regular exercise. By staying on top of timing, hydration, and vitamin intake, you’ll get the most benefit without the usual hassles.
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