phenobarbital · Medicine question

What is the shelf life of the 500 ml Thornton & Ross Ltd product Phenobarbital Elixir BP before and after opening?

Name: What is the shelf life of the 500 ml Thornton & Ross Ltd product Phenobarbital Elixir BP before and after opening?
Published: 2026-11-08T14:30:52.807Z

iatroX medicinesPublished 8 November 2026

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The 500 ml Thornton & Ross Ltd product Phenobarbital Elixir BP has a shelf life of 36 months unopened and must be used within 28 days once opened.

Sources for this answer

Phenobarbital Elixir BPThornton & Ross Ltd · emc · SmPC §6.3 Shelf life · Version 11Document updated 26 October 2023

Sources checked 8 November 2026

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