US7829120 — Trazodone composition for once a day administration
Method of Use · Assigned to Labopharm Barbados Ltd · Expires 2027-03-27 · 1y remaining
What this patent protects
This patent protects a once-a-day formulation of trazodone or a trazodone derivative that maintains therapeutic plasma concentration for at least 24 hours after administration.
USPTO Abstract
The invention relates to a once a day formulation of trazodone or a trazodone derivative. The formulation contains trazodone or a trazodone derivative and a controlled release excipient so that, once administered orally, the trazodone or the trazodone derivative is maintained at a therapeutic plasma concentration from at least 1 hour to at least 24 hours after initial administration. After administration, the initial therapeutic action takes effect within the first hour and lasts at least about 24 hours. This therapeutic effect remains relatively and substantially stable for the remaining period of 24 hours. The formulations can be used for treating depression and/or sleeping disorders.
Drugs covered by this patent
FDA Patent Use Codes
When a patent is method-of-use, FDA lists it once per applicable indication ("U-code"). Each U-code carves out a specific therapeutic use that generic filers must either license or design around.
| Code | Description | Drug |
|---|---|---|
U-796 |
— | trazodone-hydrochloride |
U-796 |
— | trazodone-hydrochloride |
Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.
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