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Cross-Linked Cholestyramine USP Granules

Granular form of Cholestyramine resin USP (cross-linked polyvinylbenzyltrimethylammonium chloride) optimized for uniform dispersion in oral suspensions. Remains primary form ion-exchanger under HTS 3914.00.20.00 as granulation doesn't constitute fabrication.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳ChinaFree+37.5%37.5%
🇲🇽MexicoFree+10.0%10%
🇨🇦CanadaFree+10.0%10%
🇩🇪GermanyFree+10.0%10%
🇯🇵JapanFree+12.5%12.5%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

3915.90.00Same rate: 37.5%

If waste or scrap form for reprocessing

Polymer waste/scrap has dedicated classification regardless of type.

3923.50.00.00Higher: 42.8% vs 37.5%

If made into stoppers or medical closures

Articles for conveyance/packing of goods move to Chapter 39 articles.

3004.90Lower: 12.5% vs 37.5%

If certified as bulk drug substance by FDA

Active pharmaceutical ingredients receive specific medicament subheadings.

Not sure which classification is right?

The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.

Import Tips & Compliance

• Document granulation process doesn't alter polymer structure; include flowability and bulk density specs; separate from finished suspensions to avoid Chapter 30