Source: Medicines & Healthcare Products Regulatory Agency (GB) Revision Year: 2019 Publisher: CHEPLAPHARM Arzneimittel GmbH, Ziegelhof 24, 17489 Greifswald, Germany
Pharmacotherapeutic group: Bile acid sequestrants
ATC code: C10AC01
Colestyramine resin absorbs and combines with the bile acids in the intestine to form an insoluble complex which is excreted in the faeces. This results in a continuous, though partial, removal of bile acids from the enterohepatic circulation by preventing their reabsorption. The increased faecal loss of bile acids leads to an increased oxidation of cholesterol to bile acids and a decrease in serum cholesterol levels and low density lipoprotein serum levels. Colestyramine is hydrophilic but it is not soluble in water, nor is it hydrolysed by digestive enzymes.
In patients with partial biliary obstruction, the reduction of serum bile acid levels reduces excess bile acids deposited in the dermal tissue with resultant decrease in pruritus.
The colestyramine resin in Questran Light is not absorbed from the digestive tract.
No further significant information.
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