calcium citrate

Drug ingredient

CAS 813-94-5

This chemical is an active pharmaceutical ingredient used in FDA-regulated drugs.

Molecular structure of 813-94-5 — 3 Ca²⁺

US productionNot reported

Import value, 2024$130M

Top sourceIsrael 39%

This chemical is listed as active in US commerce, but no company reported it to EPA’s survey for 2019 or 2023. Sites may have made or imported less than the threshold amount, or none.

Why supply is unknown

Production is reported production, not a complete census of factories. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 291815 · basket

These shares come from HS customs code 291815, which covers 34 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries

Country of origin for US imports, from Census customs data (2024).

IL 39%IsraelIN 14%IndiaDE 13%GermanyCN 10%ChinaIT 6%Italy

Brazil
Japan
Netherlands
Australia
Lithuania
United Kingdom
Norway
South Korea
Czech Republic
Lebanon
Ireland
Turkey
Estonia
Mexico
Switzerland

7 FDA-registered drug labelers

Deseret Biologicals, Inc.

Jost Chemical Co.

JOST CHEMICAL POLAND SP Z O O

Liquid Quimica Mexicana, S.A. de C.V.

Mission Pharmacal Company

PureTek Corporation

V2 Pharma LLC

Why It Matters

Sectors

Health

Downstream Uses

Appears in 7 drug and cosmetic product listings (FDA).

•Matervia
•Dairy Allergen Mix
•Livita Children
•Livita Adults
•Folcyteine
•CitraNatal 90 DHA
•LiquiCal Plus

FDA Shortage Status

Whether any manufacturer currently reports this drug as in shortage on the FDA Drug Shortages database. "Active Shortage" means at least one presentation has status "current."

No FDA shortage records

Chemical Identity

CAS813-94-5

PubChem CID13136

DTXSIDDTXSID7061148

FormulaC12H10Ca3O14

Mol. Weight498.4 g/mol

SMILESC(C(=O)[O-])C(CC(=O)[O-])(C(=O)[O-])O.C(C(=O)[O-])C(CC(=O)[O-])(C(=O)[O-])O.[Ca+2].[Ca+2].[Ca+2]

Data Sources

PubChem · compound 13136Retrieved 2026-04-07
EPA TSCA InventoryRetrieved 2026-04-24
FDA National Drug Code directoryRetrieved 2026-04-07
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

calcium citrate (CAS 813-94-5) https://chemicalindependence.com/chemical/813-94-5/ PubChem: 13136. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/13136 EPA TSCA Inventory: CAS 813-94-5. Retrieved 2026-04-24. https://www.epa.gov/tsca-inventory FDA National Drug Code directory: bulk match. Retrieved 2026-04-07. https://open.fda.gov/data/ndc/ US Census international trade: HS 291815 for CAS 813-94-5. Reporting year: 2024. https://usatrade.census.gov/