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Medicines guanfacine hydrochlorideQuestion & answer

guanfacine hydrochloride · Medicine question

What is the elimination half-life of guanfacine?

iatroX medicinesPublished 8 November 2026

The answer

Answer

The elimination half-life of guanfacine is approximately 18 hours.

Sources for this answer

Intuniv 4 mg prolonged-release tabletsTakeda UK Ltd · emc · SmPC §5.2 Pharmacokinetic properties · Version 4Document updated 12 March 2026

Sources checked 8 November 2026

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The full medicine guide

guanfacine hydrochloride

More questions about guanfacine hydrochloride

Can Intuniv (guanfacine) prolonged-release tablets be taken in either the morning or the evening?For which children and adolescents is Intuniv (guanfacine) indicated for ADHD?How can guanfacine affect the ability to drive or use machines?How does guanfacine affect valproic acid concentrations when the medicines are taken together?How does ketoconazole affect guanfacine concentrations when taken with Intuniv?

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