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Medicines st johns wortQuestion & answer

st johns wort · Medicine question

What is the elimination half-life of hypericin in St John's wort?

iatroX medicinesPublished 8 November 2026

The answer

Answer

The elimination half-life of hypericin in St John's wort is about 20 hours.

Sources for this answer

Care St John's Wort Low Mood Relief Tablets / UCalm St John's Wort TabletsThornton & Ross Ltd · emc · SmPC §5.2 Pharmacokinetic properties · Version 2Document updated 4 January 2019

Sources checked 8 November 2026

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