| http://www.w3.org/ns/prov#value | - Only butterbur products that are certified and labeled ???PA-free??? should be used.Butterbur is used for pain, upset stomach, stomach ulcers, migraine and other headaches, ongoing cough, chills, anxiety, plague, fever, trouble sleeping (insomnia),whooping cough, asthma, hay fever (allergic rhinitis), and for irritable bladder and urinary tract spasms.
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