How long after ingestion does pyrantel pamoate begin to work in humans?

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Pyrantel Pamoate Onset of Action After Oral Ingestion

Pyrantel pamoate reaches peak blood levels within about 1–3 hours after a single oral dose in humans. [1]

For pinworm infections specifically, pyrantel pamoate is a worm-killing therapy that does not kill eggs, so symptom improvement or cure is expected only after the repeat dose given ~2 weeks later. [2]

Sources (2)

[1] Research 2003

Pyrantel (Compound record with pharmacology section)

PubChem (NCBI)

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[2] Guideline 2024

Clinical Overview of Pinworm infection

Centers for Disease Control and Prevention (CDC)

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Pyrantel Pamoate Onset of Action After Oral Ingestion

Sources (2)

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