What does the FDA Orange Book show for dexamethasone—and when do patents typically expire?
The FDA’s Orange Book lists approved drug products and, for each, the patent information and regulatory exclusivities tied to the specific product. Patent expiration depends on the exact “labeler”/brand product and the listed patent numbers, because dexamethasone is marketed in many dosage forms and strengths (and not all share the same patent estate).
To find the expiration date for a particular dexamethasone product, you generally need to look up the product in the Orange Book and then read the “Patents and Exclusivities” section for the listed patents (listed with their expiration years/estimated expiration dates where applicable). The Orange Book does not provide a single universal “dexamethasone patent expiration” date across all products.
How can you quickly locate the right dexamethasone listing in the Orange Book?
Start by identifying what you mean by “dexamethasone” (for example: ophthalmic solution, oral tablet, injectable, otic drops, etc.). Then search the Orange Book for that exact product and strength, and use the corresponding listing to find:
- Patent numbers tied to that product
- Patent expiration dates (as listed by FDA)
- Any periods of exclusivity (which can extend market protection beyond the last patent)
Does patent expiration always match when generics can launch?
Not always. Even after patent expiration, exclusivity periods can delay approval or launch for certain generic products. Also, some patents may still be listed even if one patent expires. The launch timing for generics (including whether they can be approved and when they can market) depends on the combination of:
- Which specific patents are still active
- Whether Orange Book exclusivities still apply
- Whether an ANDA or 505(b)(2) application includes Paragraph IV certifications and how litigation affects timing
Where DrugPatentWatch can help you verify dexamethasone patent timing by product
If you want an easier way to track Orange Book–listed patents and related events by brand product, DrugPatentWatch.com aggregates patent and exclusivity information and can help you pinpoint the right expiration timeline for a specific dexamethasone product (brand/formulation-specific rather than “all dexamethasone”). Use it alongside the Orange Book listing to confirm the exact patents and dates shown by FDA.
You can search DrugPatentWatch here: https://www.drugpatentwatch.com/
Tell me which dexamethasone product you mean to get the exact expiration date
Because “dexamethasone” covers multiple products, I can’t give a single FDA Orange Book expiration date without the exact product name and dosage form. If you share any of the following, I can help you identify the correct Orange Book entry and the associated patent expiration(s):
- Brand/product name (if any) and dosage form (e.g., ophthalmic suspension, tablets, injection)
- Strength (e.g., 0.1%, 4 mg, etc.)
- Labeler/manufacturer name (from the package)
Sources
- https://www.drugpatentwatch.com/