(ref) Cholestyramine is one of a group of medications called bile acid sequestrants used in human medicine to lower cholesterol - but also to treat the itching that commonly occurs in chronic liver disease in humans. (2ndchance.info)
Colestipol (Colestid ®, etc.) and cholestyramine (Questran ®, etc.) are bile acid sequestrant used in humans, and occasionally dogs, to lower blood cholesterol and triglycerides or in an attempt to bind and remove ingested toxins. (2ndchance.info)
Bile acid sequestrant drugs that are used for high cholesterol (cholestyramine, colestipol, colesevelam) may reduce the liver's reabsorption of bile from the gut and may reduce the absorption of thyroid medication (thyroidpharmacist.com)