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What are the side effects of taking valerian?

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Valerian usually causes no side effects. However, it will likely cause sedation. Some people feel a "hangover" after taking valerian. It may also cause headache, upset stomach, uneasiness, irregular heartbeat, or other symptoms.

SOURCES: Longe, J., ed. , second edition, 2004. Memorial Sloan-Kettering Cancer Center web site: "About Herbs: Valerian." National Center for Complementary and Alternative Medicine web site: "Herbs at a Glance: Valerian." Natural Medicines Comprehensive Database web site: "Valerian." Natural Standard Patient Monograph: "Valerian."




The Gale Encyclopedia of Alternative Medicine

Reviewed by Melinda Ratini on February 12, 2019

SOURCES: Longe, J., ed. , second edition, 2004. Memorial Sloan-Kettering Cancer Center web site: "About Herbs: Valerian." National Center for Complementary and Alternative Medicine web site: "Herbs at a Glance: Valerian." Natural Medicines Comprehensive Database web site: "Valerian." Natural Standard Patient Monograph: "Valerian."




The Gale Encyclopedia of Alternative Medicine

Reviewed by Melinda Ratini on February 12, 2019

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How does valerian interact with other drugs?

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