Last Updated: November 9, 2026

SELENIOUS ACID - Generic Drug Details

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What are the generic drug sources for selenious acid and what is the scope of freedom to operate?

Selenious acid is the generic ingredient in one branded drug marketed by Am Regent, Aspiro, Cipla, Emerge Bioscience, Fresenius Kabi Usa, Gland, Stira, Sun Pharm, and Zydus Pharms, and is included in nine NDAs. There are two patents protecting this compound. Additional information is available in the individual branded drug profile pages.

Two suppliers are listed for this compound. There are two tentative approvals for this compound.

Summary for SELENIOUS ACID
Recent Clinical Trials for SELENIOUS ACID

Identify potential brand extensions & 505(b)(2) entrants

SponsorPhase
American Regent, Inc.Phase 4
Shanghai Zhongshan HospitalN/A
Shanghai Changzheng HospitalN/A

See all SELENIOUS ACID clinical trials

Generic filers with tentative approvals for SELENIOUS ACID
Applicant Application No. Strength Dosage Form
⤷  Start Trial⤷  Start Trial600MCG/10MLINJECTION;SOLUTION
⤷  Start Trial⤷  Start Trial60UG/1MLINJECTION
⤷  Start Trial⤷  Start Trial12UG/2MLINJECTION

The 'tentative' approval signifies that the product meets all FDA standards for marketing, and, but for the patents / regulatory protections, it would approved.

Paragraph IV (Patent) Challenges for SELENIOUS ACID
Tradename Dosage Ingredient Strength NDA ANDAs Submitted Submissiondate
SELENIOUS ACID Intravenous Solution selenious acid 600 mcg/10 mL 209379 11 2024-06-11

US Patents and Regulatory Information for SELENIOUS ACID

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Stira SELENIOUS ACID selenious acid SOLUTION;INTRAVENOUS 218536-001 Dec 31, 2025 AP RX No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Am Regent SELENIOUS ACID selenious acid SOLUTION;INTRAVENOUS 209379-003 Aug 30, 2021 AP RX Yes Yes 12,150,957 ⤷  Start Trial ⤷  Start Trial
Aspiro SELENIOUS ACID selenious acid SOLUTION;INTRAVENOUS 219633-002 Jun 11, 2025 AP RX No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Cipla SELENIOUS ACID selenious acid SOLUTION;INTRAVENOUS 218661-001 Jul 21, 2025 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Aspiro SELENIOUS ACID selenious acid SOLUTION;INTRAVENOUS 219633-001 Jun 11, 2025 AP RX No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Exclusivity Expiration

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