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What the FDA labels say about taking them together

Cholic acid and colestipol

Cholic acid's FDA label of January 26, 2026 names colestipol in its drug interactions section; the colestipol labels PlainMeds reads (3) do not name cholic acid. The cholic acid label: “Bile Acid Binding Resins Bile acid binding resins such as cholestyramine, colestipol, or colesevelam adsorb and reduce bile acid absorption and may reduce the efficacy of CHOLBAM.”

Check it at the source: the cholic acid FDA label on DailyMed (effective January 26, 2026, Mirum Pharmaceuticals Inc.); the colestipol FDA label on DailyMed (effective February 19, 2024, Zydus Pharmaceuticals USA Inc.).

What does the cholic acid label say about colestipol?

Cholic acid label, drug interactions

Bile Acid Binding Resins Bile acid binding resins such as cholestyramine, colestipol, or colesevelam adsorb and reduce bile acid absorption and may reduce the efficacy of CHOLBAM.

Source: FDA drug label (CHOLBAM), Mirum Pharmaceuticals Inc., effective January 26, 2026 (SPL set 5c6e4c9d-b85e-493f-9420-ab2fd0ff3723), via openFDA; the full label on DailyMed

What does the colestipol label say about cholic acid?

Colestipol's label (effective February 19, 2024) and its 2 other brand-application labels do not name cholic acid in these sections. A label lists what its studies and reports found; it is not a complete list.

Source: FDA drug label (Colestipol hydrochloride), Zydus Pharmaceuticals USA Inc., effective February 19, 2024 (SPL set 71f12e0d-373a-4867-b37c-f24d99c5ce95), via openFDA; the full label on DailyMed

These are the labels' own sentences. PlainMeds does not grade interactions; a pharmacist or prescriber can say what they mean for one person's medicines.

Both medicines on the record

0Cholic acid generic labelers
8Colestipol generic labelers
Cholic acidColestipol
Labeled forn/aHigh cholesterol
Boxed warningNoNo
Pharmacy cost (NADAC)n/a$0.658 per tablet 1 g tablet
Shortage nowNo current entryNo current entry

Source: FDA NDC Directory, CMS NADAC of October 7, 2026 and the FDA Drug Shortage Database (FDA files October 8, 2026)

What next?