Last updated: May 1, 2026
Who supplies Sodium Iodide I 131 for pharmaceutical use?
Sodium iodide I 131 is supplied by companies that produce or broker radioactive iodine products, either as finished radiopharmaceutical supplies or as raw radioisotope feedstock converted into the medicinal product.
A complete supplier map depends on regulatory status in the target geography (NDA/MA holder, pharmacy radiopharmacy channel, and nuclear supply chain approvals). Within the public domain, the most consistently documented commercial supply is tied to established radioisotope producers and radiopharmaceutical manufacturers.
Which named manufacturers supply Sodium Iodide I 131 (publicly documented products)?
The following suppliers are directly linked in public-facing catalogues and regulatory/compendial contexts to commercially marketed sodium iodide I 131 radiopharmaceuticals:
| Supplier / Brand owner |
Market positioning |
Product form typically sold |
Public proof points |
| Curium |
Radiopharmaceuticals provider |
Iodine I-131 (sodium iodide I 131 for therapeutic use in radiopharmacy distribution channels) |
Curium product lines and radiopharmacy supply documentation list iodine I-131 products used clinically (including thyroid ablation and therapy workflows) ([1]) |
| FUJIFILM RI Pharma |
Producer/manufacturer of medical isotopes and radiopharmaceuticals |
Iodine I-131 radiopharmaceuticals for therapeutic use |
FUJIFILM RI Pharma product documentation lists iodine I-131 offerings used in thyroid therapy settings ([2]) |
| Mallinckrodt (Legacy: NDC/brands historically tied to radiopharmaceutical iodine products) |
Manufacturer/distributor channel |
Sodium iodide I-131 radiopharmaceuticals |
Mallinckrodt’s radiopharmaceutical footprint includes iodine I-131 products in commercial catalog and labeling contexts ([3]) |
| Eckert & Ziegler (radioisotope supplier with radiopharmaceutical conversion ecosystem) |
Radioisotope supply chain |
Iodine-131 feedstock and/or isotope supply to radiopharmaceutical manufacturers |
Eckert & Ziegler supplies I-131 in the medical isotope ecosystem, feeding radiopharmaceutical manufacturing (conversion to sodium iodide I-131) ([4]) |
| Thermo Fisher Scientific (radioisotope supply chain and/or distribution links) |
Radioisotope supply chain to healthcare manufacturers |
I-131 isotope supply used to produce radiopharmaceutical sodium iodide I-131 |
Thermo Fisher has public radioisotope supply listings that include I-131 used by radiopharmaceutical manufacturers ([5]) |
How are suppliers typically organized in the I-131 supply chain?
Sodium iodide I 131 is sourced through two overlapping routes:
-
Direct radiopharmaceutical manufacturers / product holders
- Sell the finished radiopharmaceutical sodium iodide I 131 for therapeutic dosing through regulated radiopharmacy and nuclear medicine distribution channels.
-
Isotope producers that supply I-131 feedstock
- Provide I-131 to downstream manufacturers that formulate it as sodium iodide I 131 under local regulatory manufacturing controls.
This structure determines procurement outcomes:
| Procurement goal |
Best supplier category |
| Buy finished, regulated medicinal product with dosing-ready packaging |
Radiopharmaceutical manufacturer / product holder |
| Secure production continuity by ensuring isotope availability |
I-131 isotope producer / feedstock supplier |
| Reduce lead times by using local distribution networks |
Manufacturer/distributor with radiopharmacy fulfilment capability |
What procurement artifacts should be requested from suppliers?
For sodium iodide I 131, procurement decisions typically hinge on documentation that ties product identity, quality system controls, and radiological handling requirements. From suppliers and their distribution partners, buyers commonly request:
- Product-specific certificate of analysis and radiochemical purity
- Chain-of-custody records for radioactive materials distribution
- Regulatory listing evidence in the target country (MA/NDA or authorized medicinal product listing where applicable)
- Lot traceability (supplier lot numbers aligned to batch records)
- Transport and storage parameters (radiological shipping classification and site receiving requirements)
- Expiry and re-assay policy consistent with local radiopharmacy practice
Supplier shortlisting logic for high-reliability continuity
A practical shortlist for sodium iodide I 131 usually evaluates:
- Manufacturing channel (finished radiopharmaceutical vs isotope feedstock)
- Geography coverage (distribution reach into the buyer’s nuclear medicine market)
- Delivery model (direct supply vs radiopharmacy network fulfilment)
- Regulatory status (authorized product listing and labeling for the destination market)
- Supply resilience indicators (historic lead times, batch release cadence in the market)
Where do suppliers fit relative to clinical use?
Sodium iodide I 131 is a therapeutic radiopharmaceutical used for indications such as thyroid disease treatment and ablation/therapy workflows. That clinical placement drives supply expectations:
| Use case |
Supply expectation |
Supplier alignment |
| Outpatient thyroid therapy workflows |
Dosing-ready packaging and radiopharmacy compatibility |
Radiopharmaceutical manufacturer / product holder |
| Multi-site hospital systems |
Consistent lot release and predictable delivery schedule |
Distributor or manufacturer with multi-region distribution |
| Production scalability at radiopharmacies |
Stable isotope supply and formulation support |
Isotope producers and conversion ecosystem |
Key Takeaways
- Sodium iodide I 131 is supplied primarily by radiopharmaceutical manufacturers that sell finished products and by I-131 isotope producers that feed downstream sodium iodide formulation.
- Publicly documented commercial supply in the radiopharmaceutical ecosystem includes Curium, FUJIFILM RI Pharma, and Mallinckrodt (finished product channel), with Eckert & Ziegler and Thermo Fisher Scientific showing up as I-131 supply chain participants feeding conversion/manufacturing workflows ([1]-[5]).
- Procurement reliability depends on aligning supplier category, authorized product status in the destination market, and chain-of-custody and batch traceability documentation.
FAQs
1) Do I-131 isotope producers supply sodium iodide I 131 directly?
Often they supply I-131 feedstock; downstream manufacturers convert it to sodium iodide I 131 as a finished radiopharmaceutical. End users typically buy finished product through radiopharmacy supply channels.
2) Which supplier type matters most for predictable dosing and scheduling?
Finished radiopharmaceutical manufacturers or authorized distributors typically matter most for dosing-ready packaging, release cadence, and radiopharmacy workflow fit.
3) What documentation is non-negotiable when ordering sodium iodide I 131?
Certificates of analysis (including radiochemical purity), lot traceability, chain-of-custody records, and shipping and receiving parameters aligned to radioactive material handling.
4) Can a hospital buy sodium iodide I 131 without using a licensed radiopharmacy network?
In most jurisdictions, sodium iodide I 131 distribution and administration follow regulated frameworks that typically involve authorized radiopharmacy and controlled handling.
5) How do I assess supply continuity across suppliers?
Compare supplier manufacturing channel (finished product vs isotope feedstock), destination market authorization, historical lead times in your region, and batch release cadence.
References
[1] Curium. (n.d.). Iodine (I-131) radiopharmaceutical product information. Curium. https://www.curiumpharma.com/
[2] FUJIFILM RI Pharma. (n.d.). Medical isotopes and radiopharmaceuticals: Iodine-131 products. FUJIFILM RI Pharma. https://www.fujifilm-ri.com/
[3] Mallinckrodt. (n.d.). Radiopharmaceutical product lines including iodine I-131 (historical commercial catalog/labeling references). Mallinckrodt. https://www.mallinckrodt.com/
[4] Eckert & Ziegler. (n.d.). Medical isotopes: Iodine-131 (I-131). Eckert & Ziegler. https://www.ezag.com/
[5] Thermo Fisher Scientific. (n.d.). Radioisotopes and medical isotopes supply: Iodine-131 (I-131). Thermo Fisher Scientific. https://www.thermofisher.com/
