sodium phenylbutyrate · Medicine question

What is the shelf life of Pheburane granules (sodium phenylbutyrate) before and after first opening?

Name: What is the shelf life of Pheburane granules (sodium phenylbutyrate) before and after first opening?
Published: 2026-11-08T14:29:40.035Z

iatroX medicinesPublished 8 November 2026

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Answer

Pheburane granules (sodium phenylbutyrate) have a shelf life of 3 years before first opening and must be used within 45 days after first opening.

Sources for this answer

PheburaneEurocept International bv · emc · SmPC §6.3 Shelf life · Version 1Document updated 4 June 2020

Sources checked 8 November 2026

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