Cholestyramine Powder, For Suspension
NDC Package 42571-508-29

View Billable Units, 11-Digit Conversion Format, and RxNorm mappings
Table of Contents
    1. Package Information
    2. Frequently Asked Questions

Package Information

Cholestyramine powders is cholestyramine is used along with a proper diet to lower cholesterol in the blood. This formulation utilizes a powder, for suspension delivery system. Marketed by Micro Labs Limited, this product is identified by NDC 42571-508 and is authorized under FDA application ANDA219318.

Identification & Billing

NDC Package Code
42571-508-29
Package Description
60 POUCH in 1 CARTON / 9 g in 1 POUCH (42571-508-04)
Product Code
42571-508
11-Digit Billing Format
42571050829
RxNorm Crosswalk
  • RxCUI: 848943 - cholestyramine resin 4 GM Powder for Oral Suspension
  • RxCUI: 848943 - cholestyramine resin 4000 MG Powder for Oral Suspension
  • RxCUI: 848943 - cholestyramine resin 4 GM per 9 GM Powder for Oral Suspension

Clinical Specifications

Proprietary Name
Cholestyramine
Non-Proprietary Name
Cholestyramine
Substance Name
Cholestyramine
Dosage Form
Powder, For Suspension - An intimate mixture of dry, finely divided drugs and/or chemicals, which, upon the addition of suitable vehicles, yields a suspension (a liquid preparation containing the solid particles dispersed in the liquid vehicle).
Administration Route
Oral - Administration to or by way of the mouth.
Active Ingredient(s)
CHOLESTYRAMINE 4 g/9g
Pharmacologic Class
Usage Information
Cholestyramine is used along with a proper diet to lower cholesterol in the blood. Lowering cholesterol helps decrease the risk for strokes and heart attacks. In addition to a proper diet (such as a low-cholesterol/low-fat diet), other lifestyle changes that may help this medication work better include exercising, losing weight if overweight, and stopping smoking. Consult your doctor for more details. Cholestyramine may also be used to treat itching in people with too much bile acid caused by a certain type of liver/bile duct disease (partial biliary obstruction). This medication is known as a bile acid-binding resin. It works by removing bile acid from the body. In people with high cholesterol, this causes the liver to make more bile acid by using cholesterol in the blood. This helps to lower the cholesterol levels.

Regulatory & Marketing

Labeler Name
Micro Labs Limited
Product Type
Human Prescription Drug
FDA Application #
ANDA219318
Marketing Category
ANDA - A product marketed under an approved Abbreviated New Drug Application.
Start Marketing Date
04-01-2026
Listing Expiration
12-31-2027
Exclude Flag
N
Sample Package
No

Hierarchy Structure

Code Lineage

The NDC Directory contains ONLY information on final marketed drugs submitted to FDA electronically by labelers. A labeler might be a manufacturer, re-packager or re-labeler. The product information included in the NDC directory does not indicate that FDA has verified the information provided by the product labeler. Assigned NDC numbers are not in any way an indication of FDA approval of the product.

* Please review the full disclaimer at the bottom of this page.

Frequently Asked Questions

What is the distribution configuration for this product package?

The code 42571-508-29 identifies a specific commercial package of 60 pouch in 1 carton / 9 g in 1 pouch (42571-508-04) of Cholestyramine, a human prescription drug labeled by Micro Labs Limited. This powder, for suspension is formulated for oral use and contains cholestyramine as the active substance.

Is this product currently listed with the FDA?

Yes, this product is active and verified within the NDC Directory. It was introduced to the market by Micro Labs Limited on April 01, 2026. The current certification is valid through December 31, 2027.

What are the primary indications for this medication?

Cholestyramine is used along with a proper diet to lower cholesterol in the blood. Lowering cholesterol helps decrease the risk for strokes and heart attacks. In addition to a proper diet (such as a low-cholesterol/low-fat diet), other lifestyle changes that may help this medication work better include exercising, losing weight if overweight, and stopping smoking. Consult your doctor for more details. Cholestyramine may also be used to treat itching in people with too much bile acid caused by a certain type of liver/bile duct disease (partial biliary obstruction). This medication is known as a bile acid-binding resin. It works by removing bile acid from the body. In people with high cholesterol, this causes the liver to make more bile acid by using cholesterol in the blood. This helps to lower the cholesterol levels.

How is this Micro Labs Limited product billed for insurance claims?

For medical billing and reimbursement, this package follows the 11-digit CMS format: 42571050829. The table below illustrates the segment conversion from the 10-digit labeler code to the 11-digit provider format.

11-Digit Code Conversion

Billing payers usually require a 5-4-2 segment configuration. Below is the conversion from the 10-digit package format to the 11-digit billing format:

10-Digit Format (5-3-2)
42571-508-29
11-Digit CMS (5-4-2)
42571-0508-29

Note: The zero is added to the Product segment to maintain the 5-4-2 structure.