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Alvimopan bulk supplier for pharma manufacturers

Alvimopan 12 mg Suppliers & Bulk Manufacturers

Available Forms: Capsules

Available Strengths: 12 mg

Reference Brands: Entereg (USA)

Category: Gastrointestinal Drugs

Alvimopan is a Gastrointestinal Drugs product available as Capsules in strengths 12 mg. It corresponds to the reference brand Entereg (USA). Verified GMP manufacturers and suppliers on PharmaTradz offer it in bulk for import worldwide, with regulatory documentation and dossier support available on request.

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📘 Sourcing Guide

Product Description:

Alvimopan, marketed under the trade name Entereg, is a peripherally acting μ-opioid receptor antagonist used to treat postoperative ileus. Unlike centrally acting opioid antagonists, alvimopan has limited ability to cross the blood–brain barrier, allowing it to block μ-opioid receptors in the gastrointestinal tract without reversing the analgesic effects of opioids in the central nervous system. This selective action helps patients recover bowel function more quickly after surgery while still managing pain effectively with opioid medications.

Alvimopan is primarily prescribed for hospitalized patients following bowel resection surgery. It is administered orally in a controlled hospital setting, typically starting prior to surgery and continuing for a limited number of doses postoperatively. By stimulating gastrointestinal motility and reducing the duration of postoperative ileus, alvimopan can shorten hospital stays and improve patient comfort and recovery outcomes. Its use is restricted to FDA-approved indications due to potential cardiovascular risks with long-term administration. When used appropriately under medical supervision, alvimopan is an effective agent for managing postoperative gastrointestinal complications without compromising pain control.

Alvimopan — third party manufacturing & bulk supply

Alvimopan 12 mg is available through PharmaTradz for wholesale and bulk supply as well as on a third party (contract) manufacturing basis. Buyers sourcing this product generally take one of three routes:

Wholesale / bulk supply Stock or scheduled supply from an existing manufacturer. The fastest route where the product is already registered in your market.
Third party manufacturing Manufactured to your specification and packed under your own brand and label — suits distributors and brand owners building a portfolio in their market.
Dossier licensing Where a CTD, EU-CTD or ACTD dossier exists it can often be licensed for filing in your name, compressing market entry from years to months.

What to include when you enquire

  • Destination market — determines which manufacturers hold the right site-level approvals
  • First order quantity and estimated annual volume
  • Whether you need a registration dossier or the product is already registered
  • Packaging, labelling and language requirements
  • Incoterms and required shelf life

Manufacturers of Alvimopan listed on PharmaTradz hold site-level approvals across WHO-GMP, EU-GMP, USFDA, ANVISA and TGA, verified at onboarding. Narcotic drugs and controlled substances are supplied strictly against valid import and export permits issued by the competent authorities.

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Frequently Asked Questions


Alvimopan is used to accelerate gastrointestinal recovery following bowel resection surgery. It helps reduce postoperative ileus while allowing continued use of opioid pain medications.


Alvimopan is a synthetic peripherally acting μ-opioid receptor antagonist formulated as an oral capsule for short-term hospital use.


Alvimopan is marketed under the brand name Entereg in the USA.


Alvimopan (Entereg) is manufactured and marketed by Merck & Co. in the United States.


The generic name is alvimopan.


The brand name is Entereg (USA).


Alvimopan is manufactured in FDA-approved pharmaceutical facilities in the USA under Merck & Co. supervision.

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