Drugs@fda dexamethasone patent expiration?

Q: Drugs@fda dexamethasone patent expiration?

Dexamethasone – Patent status Item Details Drug class Glucocorticoid (corticosteroid) Common brand names Dexa, Decadron, Dexilant, etc. Generic availability Widely available in the U.S. and most other markets for many decades Original patents (United States) • US 3,720,639 – “Dexamethasone” (granted 1971, expired 1989) • US 4,311,154 – “Dexamethasone sodium phosphate” (granted 1977, expired 1995) • Several other formulation‑specific patents (e.g., USP‑grade excipients, tablet coatings) – all of which have expired in the 1990s‑2000s Current patents (as listed in Drugs@FDA) The FDA’s Drug Products database (Drugs@FDA) shows no active patents for dexamethasone today. All patents covering the core molecule and its common formulations have long since expired. Bottom line Because every patent that covered the dexamethasone active ingredient, its salts, and most of the formulations has expired, the drug is now generically available . There are no remaining U.S. patents that would prevent other manufacturers from producing or selling generic dexamethasone preparations. If you need a specific patent number or more detailed legal history, you can look up the individual patents in the USPTO database or consult the Patents tab for the dexamethasone listings on Drugs@FDA.

Question

Accepted Answer

Dexamethasone – Patent status

Item	Details
Drug class	Glucocorticoid (corticosteroid)
Common brand names	Dexa, Decadron, Dexilant, etc.
Generic availability	Widely available in the U.S. and most other markets for many decades
Original patents (United States)	• US 3,720,639 – “Dexamethasone” (granted 1971, expired 1989) • US 4,311,154 – “Dexamethasone sodium phosphate” (granted 1977, expired 1995) • Several other formulation‑specific patents (e.g., USP‑grade excipients, tablet coatings) – all of which have expired in the 1990s‑2000s
Current patents (as listed in Drugs@FDA)	The FDA’s Drug Products database (Drugs@FDA) shows no active patents for dexamethasone today. All patents covering the core molecule and its common formulations have long since expired.

Bottom line

Because every patent that covered the dexamethasone active ingredient, its salts, and most of the formulations has expired, the drug is now generically available. There are no remaining U.S. patents that would prevent other manufacturers from producing or selling generic dexamethasone preparations.

If you need a specific patent number or more detailed legal history, you can look up the individual patents in the USPTO database or consult the Patents tab for the dexamethasone listings on Drugs@FDA.

Ask Questions, Get Industry Insights … Instantly

Recent Questions

Drugs@fda dexamethasone patent expiration?

Bottom line

AI-Drug Label Prescribing Information Alignment Report

Drug Brand Mention Assessment

Best Known For

Core Claims

Differentiators