Generic Ryanodex Availability
Last updated on Apr 10, 2025.
Ryanodex is a brand name of dantrolene, approved by the FDA in the following formulation(s):
RYANODEX (dantrolene sodium - for suspension;intravenous)
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Manufacturer: EAGLE PHARMS
Approval date: July 22, 2014
Strength(s): 250MG/VIAL [RLD]
Is there a generic version of Ryanodex available?
No. There is currently no therapeutically equivalent version of Ryanodex available in the United States.
Note: Fraudulent online pharmacies may attempt to sell an illegal generic version of Ryanodex. These medications may be counterfeit and potentially unsafe. If you purchase medications online, be sure you are buying from a reputable and valid online pharmacy. Ask your health care provider for advice if you are unsure about the online purchase of any medication.
See also: Generic Drug FAQ.
Related patents
Patents are granted by the U.S. Patent and Trademark Office at any time during a drug's development and may include a wide range of claims.
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Treatment using dantrolene
Patent 7,758,890
Issued: July 20, 2010
Inventor(s): Anderson; David et al.
Assignee(s): Lyotropic Therapeutics, Inc. (Ashland, VA)Low volume safe for injection formulations of dantrolene yield significant advantages over the currently approved and marketed dantrolene for MH threatening anesthetic crisis. Once dantrolene can be made immediately available to patients triggered of MH, the anesthesiologist will be able to focus exclusively on the management of the patient's physiologic status in this complex and evolving crisis, not on the laborious and time consuming reconstitution process of the rescue agent. Additionally, a safe for injection low volume formulation of dantrolene can be made widely available to non-anesthesiologist practitioners who have occasion to use dantrolene intravenously in the treatment of other potentially life threatening conditions, including in the field. The low volume, safe for injection formulations of dantrolene, as well as other formulations of dantrolene, have significant advantages over currently used approaches to the prevention and treatment of pumphead, and other neurological, cognitive and motor dysfunction incident to iatrogenically or trauma induced situations of altered blood flow, including those incurred during surgical procedures involving CPB or related procedures, as well as those incurred during non-normothermic episodes caused iatrogenically or by disease.
Patent expiration dates:
- June 30, 2025✓
- June 30, 2025
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Professional resources
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Glossary
| Term | Definition |
|---|---|
| Drug Patent | A drug patent is assigned by the U.S. Patent and Trademark Office and assigns exclusive legal right to the patent holder to protect the proprietary chemical formulation. The patent assigns exclusive legal right to the inventor or patent holder, and may include entities such as the drug brand name, trademark, product dosage form, ingredient formulation, or manufacturing process A patent usually expires 20 years from the date of filing, but can be variable based on many factors, including development of new formulations of the original chemical, and patent infringement litigation. |
| Drug Exclusivity | Exclusivity is the sole marketing rights granted by the FDA to a manufacturer upon the approval of a drug and may run simultaneously with a patent. Exclusivity periods can run from 180 days to seven years depending upon the circumstance of the exclusivity grant. |
| RLD | A Reference Listed Drug (RLD) is an approved drug product to which new generic versions are compared to show that they are bioequivalent. A drug company seeking approval to market a generic equivalent must refer to the Reference Listed Drug in its Abbreviated New Drug Application (ANDA). By designating a single reference listed drug as the standard to which all generic versions must be shown to be bioequivalent, FDA hopes to avoid possible significant variations among generic drugs and their brand name counterpart. |
Further information
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.