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Indigotindisulfonate Sodium bulk supplier for pharma manufacturers

Indigotindisulfonate Sodium 20 mg/mL, 40 mg/mL Suppliers & Bulk Manufacturers

Available Forms: Injection

Available Strengths: 20 mg/mL, 40 mg/mL

Reference Brands: Indigo Carmine ((USA), Bludigo (USA)

Category: Medical Aid

Indigotindisulfonate Sodium is a Medical Aid product available as Injection in strengths 20 mg/mL, 40 mg/mL. It corresponds to the reference brands Indigo Carmine ((USA), Bludigo (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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Product Description:

Indigo carmine, also known as 5,5′-indigodisulfonic acid sodium salt, is a water-soluble organic compound derived from indigo through aromatic sulfonation. It produces a vivid blue color and is widely used across multiple industries, including food, cosmetics, pharmaceuticals, and medical diagnostics. In medicine, indigo carmine serves as a contrast and staining agent, helping visualize structures during surgical and urological procedures, and it also functions as a pH and redox indicator.

In aqueous solutions, indigo carmine exhibits distinct color changes depending on the pH, appearing blue at pH 11.4 and turning yellow at pH 13.0. It also acts as a redox indicator, changing color upon reduction, and is used as a dissolved ozone indicator through its conversion to isatin-5-sulfonic acid, although it can also detect superoxide. Beyond its diagnostic applications, indigo carmine is employed as a dye in the manufacturing of pharmaceutical capsules, ensuring vibrant and consistent coloration. Approved for human use in the United States and European Union, indigo carmine is a versatile compound that combines functional utility with safe application in clinical and industrial settings.

Indigotindisulfonate Sodium — third party manufacturing & bulk supply

Indigotindisulfonate Sodium 20 mg/mL, 40 mg/mL 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.

Indicative minimum order quantity

Indigotindisulfonate Sodium is supplied as Injection — an injectable dosage form, so the indicative MOQ is 50,000 units. Actual MOQ is confirmed by the allocated manufacturer against your pack presentation and destination market. See full supply terms for dossier formats, market availability and shelf life.

Manufacturers of Indigotindisulfonate Sodium listed on PharmaTradz hold site-level approvals across WHO-GMP, EU-GMP, USFDA, ANVISA and TGA, verified at onboarding.

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Frequently Asked Questions


Indigotindisulfonate sodium, commonly known as Indigo Carmine, is used as a diagnostic dye in medical procedures. It helps visualize and assess organ function, particularly the urinary tract, during surgical or diagnostic procedures. It is also used in gynecological and vascular procedures to identify structures and assess blood flow.


Indigotindisulfonate sodium is a synthetic dye compound. It is chemically manufactured and is not derived from natural or biological sources.


Indigotindisulfonate sodium is marketed under the trade name Indigo Carmine Injection.


Indigotindisulfonate sodium is manufactured and commercialized by multiple pharmaceutical companies under regulated quality standards, including US FDA and EU GMP compliance.


The generic name is indigotindisulfonate sodium.


The brand name is Indigo Carmine Injection.


Indigotindisulfonate sodium is manufactured in facilities compliant with US FDA and EU GMP standards, including sites in the USA, Europe, and other regulated regions.

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