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What are some precautions about using passionflower?

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Passionflower is a vine that has been used in traditional medicine. Today, passionflower supplements are marketed for relaxation or to lower anxiety. But evidence for its benefits are not strong. Passionflower can cause several side effects, such as:

It also may interfere with medications to treat insomnia, anxiety, and blood clots.

  • Dizziness
  • Sedation
  • Loss of coordination
  • Allergic reaction
  • Confusion

From: Passionflower WebMD Medical Reference

SOURCES:

U.S. Department of Agriculture: "Purple Passionflower."

Georgetown University Medical Center: "Passionflower."

National Academies Press: "Nutritional Supplements for Inducing Relaxation."

Memorial Sloan-Kettering Cancer Center: "Passionflower."

Akhondzadeh, S. , October 2001. Journal of Clinical Pharmacy and Therapeutics

Movafegh, A. , June 2008. Anesthesia and Analgesia

Natural Medicines Comprehensive Database: "Passionflower."

National Center for Complementary and Integrative Health: "Passionflower."

National Center for Biotechnology Information: "Passionflower in the treatment of opiates withdrawal: a double-blind randomized controlled trial."

Cleveland Clinic: Passion Flower

Reviewed by Christine Mikstas on May 29, 2019

SOURCES:

U.S. Department of Agriculture: "Purple Passionflower."

Georgetown University Medical Center: "Passionflower."

National Academies Press: "Nutritional Supplements for Inducing Relaxation."

Memorial Sloan-Kettering Cancer Center: "Passionflower."

Akhondzadeh, S. , October 2001. Journal of Clinical Pharmacy and Therapeutics

Movafegh, A. , June 2008. Anesthesia and Analgesia

Natural Medicines Comprehensive Database: "Passionflower."

National Center for Complementary and Integrative Health: "Passionflower."

National Center for Biotechnology Information: "Passionflower in the treatment of opiates withdrawal: a double-blind randomized controlled trial."

Cleveland Clinic: Passion Flower

Reviewed by Christine Mikstas on May 29, 2019

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What are side effects of taking passionflower?

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THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for general informational purposes only and does not address individual circumstances. It is not a substitute for professional medical advice, diagnosis or treatment and should not be relied on to make decisions about your health. Never ignore professional medical advice in seeking treatment because of something you have read on the WebMD Site. If you think you may have a medical emergency, immediately call your doctor or dial 911.

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