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What are the side effects of valerian?


Valerian is an herb that some people use to treat nervousness, restlessness, and sleeping disorders. Side effects are uncommon and include headaches, drowsiness, fast heart rate, and trouble sleeping.

Avoiding side effects from valerian usage

Side effects are more likely to occur if you use valerian daily for many weeks or months. Be careful with driving or using heavy machinery while taking valerian. Valerian shouldn't be used if operating heavy machinery because of its sedative side effects. Drinking alcohol or taking any medicine that can cause drowsiness may lead to an increase in drowsiness. Slowly taper doses when stopping valerian to prevent withdrawal symptoms. Talk to your doctor before taking valerian if you have any liver disease/damage.

Back to Ask a Pharmacist


Answers to questions regarding information about medications or health conditions are not for diagnostic or treatment purposes and are not conclusive as to the presence or absence of any health condition. Consult your physician for diagnosis and treatment of your medical condition. The information provided is not a substitute for medical advice. Advances in medicine may cause this information to become outdated, invalid or subject to debate. Professional opinions and interpretations of the scientific literature may vary. Walgreens' terms of use and general warranty disclaimer apply to all services provided. If you are in need of immediate medical attention, contact your physician, poison control center or emergency medical professional. If you need to speak with a pharmacist for non-emergency matters, contact your local Walgreens pharmacist or call a pharmacist toll-free at 1 (877) 250-5823.

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