Data / Drug companies / Influenza A M2 Protein Inhibitor
Influenza A M2 Protein Inhibitor drugs: 4 drugs from 39 companies in the FDA NDC directory
Updated November 6, 2026. Source: US Food and Drug Administration, National Drug Code Directory (openFDA).
Influenza A M2 Protein Inhibitor is an FDA established pharmacologic class. The FDA National Drug Code Directory lists 62 products in this class from 39 companies, covering 4 drugs by generic name. The main marketing category is generic drugs (ANDA), and the newest product started marketing on June 17, 2026.
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- 39Companies
- 62Products
- 4Drugs by generic name
Drugs in the Influenza A M2 Protein Inhibitor class
Ranked by number of companies that list the drug.
| Drug | Products here | Companies listing it |
|---|---|---|
| Amantadine hydrochloride | 44 | 32 |
| Amantadine | 14 | 10 |
| Amantadine hcl | 3 | 1 |
| Rimantadine hydrochloride | 1 | 1 |
Companies with the most products in this class
| Company | Products | Main dosage forms | Main marketing category | Newest product started |
|---|---|---|---|---|
| Bryant Ranch Prepack | 6 | capsule | Generic drugs (ANDA) | May 21, 2020 |
| Chartwell RX, LLC | 3 | solution; capsule | Generic drugs (ANDA) | June 12, 2017 |
| Coupler LLC | 3 | tablet; capsule | Generic drugs (ANDA) | March 13, 2025 |
| Direct_Rx | 3 | capsule; tablet | Generic drugs (ANDA) | January 15, 2026 |
| Adamas Pharma, LLC | 2 | capsule, coated pellets | New drug applications (NDA) | August 24, 2017 |
| Alembic Pharmaceuticals Inc. | 2 | tablet; capsule | Generic drugs (ANDA) | October 20, 2020 |
| Alembic Pharmaceuticals Limited | 2 | capsule; tablet | Generic drugs (ANDA) | October 20, 2020 |
| American Health Packaging | 2 | solution; capsule | Generic drugs (ANDA) | February 26, 2024 |
| AvPAK | 2 | solution; capsule, liquid filled | Generic drugs (ANDA) | January 19, 2026 |
| Marlex Pharmaceuticals, Inc. | 2 | capsule, gelatin coated; tablet | Generic drugs (ANDA) | March 1, 2020 |
| NCS HealthCare of Ky, LLC DBA Vangard Labs | 2 | tablet; capsule | Generic drugs (ANDA) | October 20, 2020 |
| Proficient Rx LP | 2 | capsule | Generic drugs (ANDA) | August 4, 2016 |
| Proficient Rx LP | 2 | capsule; tablet | Generic drugs (ANDA) | October 20, 2020 |
| Strides Pharma Inc. | 2 | capsule; tablet | Generic drugs (ANDA) | August 4, 2017 |
| Supernus Pharmaceuticals, Inc. | 2 | capsule, coated pellets | New drug applications (NDA) | August 24, 2017 |
| Upsher-Smith Laboratories, LLC | 2 | tablet; capsule, gelatin coated | Generic drugs (ANDA) | December 15, 2011 |
| A-S Medication Solutions | 1 | capsule | Generic drugs (ANDA) | February 18, 1987 |
| Advagen Pharma Ltd | 1 | capsule | Generic drugs (ANDA) | May 21, 2020 |
| Amneal Pharmaceuticals of New York LLC | 1 | tablet, film coated | Generic drugs (ANDA) | November 16, 2021 |
| Atlantic Biologicals Corp. | 1 | solution | Generic drugs (ANDA) | July 17, 1995 |
| AvKARE | 1 | capsule | Generic drugs (ANDA) | June 17, 2026 |
| AvKARE | 1 | capsule, liquid filled | Generic drugs (ANDA) | August 7, 2013 |
| Bajaj Medical, LLC | 1 | solution | Generic drugs (ANDA) | July 31, 2025 |
| Bionpharma Inc. | 1 | capsule, liquid filled | Generic drugs (ANDA) | August 15, 2016 |
| Bryant Ranch Prepack | 1 | capsule | Generic drugs (ANDA) | June 12, 2017 |
| Cardinal Health 107, LLC | 1 | solution | Generic drugs (ANDA) | July 17, 1995 |
| Chartwell Governmental & Specialty RX, LLC. | 1 | solution | Generic drugs (ANDA) | June 28, 1993 |
| Epic Pharma, LLC | 1 | capsule | Generic drugs (ANDA) | June 17, 2021 |
| Heritage Pharmaceuticals Inc. D/B/A Avet Pharmaceuticals Inc. | 1 | capsule | Generic drugs (ANDA) | June 12, 2017 |
| Major Pharmaceuticals | 1 | capsule | Generic drugs (ANDA) | June 12, 2017 |
| Pai Holdings, LLC DBA Pai Pharma | 1 | solution | Generic drugs (ANDA) | July 17, 1995 |
| Patrin Pharma, Inc. | 1 | solution | Generic drugs (ANDA) | August 11, 2023 |
| Rising Pharma Holdings, Inc. | 1 | capsule | Generic drugs (ANDA) | September 5, 2022 |
| St. Mary's Medical Park Pharmacy | 1 | capsule | Generic drugs (ANDA) | May 21, 2020 |
| Strides Pharma Science Limited | 1 | capsule, liquid filled | Generic drugs (ANDA) | December 1, 2022 |
| Xttrium Laboratories, Inc. | 1 | solution | Generic drugs (ANDA) | November 5, 2024 |
| Zhejiang Jutai Pharamceutical Co., Ltd | 1 | tablet | Generic drugs (ANDA) | September 26, 2024 |
| Zydus Lifesciences Limited | 1 | capsule | Generic drugs (ANDA) | August 4, 2016 |
| Zydus Pharmaceuticals USA Inc. | 1 | capsule | Generic drugs (ANDA) | August 4, 2016 |
Dosage forms
| Dosage form | Products | Share |
|---|---|---|
| Capsule | 29 | 46.8% |
| Solution | 11 | 17.7% |
| Tablet | 11 | 17.7% |
| Capsule, coated pellets | 4 | 6.5% |
| Capsule, liquid filled | 4 | 6.5% |
| Capsule, gelatin coated | 2 | 3.2% |
| Tablet, film coated | 1 | 1.6% |
CC0 1.0 public domain dedication (openFDA). Counts are products in the FDA National Drug Code Directory on November 6, 2026: 138,262 products in commercial distribution, meaning without a marketing end date in the past. A company is a labeler code; one company can hold several codes, and the directory carries no address. Inclusion in the directory is not FDA approval, and the marketing category says under which kind of application or rule a product is sold. This page uses openFDA data and is not endorsed or certified by FDA. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.