EP Patent

EP3542862A1 — Production method of pregabalin-containing composition and pregabalin-containing composition

Assigned to Nitto Denko Corp · Expires 2019-09-25 · 7y expired

What this patent protects

Provided are a production method of a pregabalin-containing composition, which suppresses crystallization of pregabalin, and a pregabalin-containing composition that shows suppressed crystallization of Pregabalin. The production method of the pregabalin-containing composition of …

USPTO Abstract

Provided are a production method of a pregabalin-containing composition, which suppresses crystallization of pregabalin, and a pregabalin-containing composition that shows suppressed crystallization of Pregabalin. The production method of the pregabalin-containing composition of the present invention contains steps of: (1) dissolving pregabalin in an aqueous solution of an acid to prepare an aqueous solution of a salt of pregabalin; (2) mixing the aqueous solution of pregabalin salt and a hydrophilic resin to prepare a mixture thereof; and (3) concentrating the mixture; wherein the acid has an acid dissociation constant lower than that of pregabalin.

Drugs covered by this patent

Patent Metadata

Patent number
EP3542862A1
Jurisdiction
EP
Classification
—
Expires
2019-09-25
Drug substance claim
No
Drug product claim
No
Assignee
Nitto Denko Corp
Source
FDA Orange Book + USPTO grounding via Google Patents

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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