Thursday, 9 January 2014

Herbal Butterbur and Seasonal allergic rhinitis

Butterbur, found in wet, marshy, damp land, including wetland, riverside, forest, etc., is a creeping underground plant, genus Petasites of 15 -20 species, belonging to the family Asteraceae, native to Northern Hemisphere. It has been used in herbal medicne used as an pain reliever in digestive system, including stomach, bile ducts, and duodenum, etc.
Seasonal allergic rhinitis is a condition of inflammation of the nasal passages as a result of seasonal allergic effects.

The Ingredients
The chemical constituents of Butterbur include Petioles, petasitene and pethybrene,  quercetin 3-O-beta-D-glucoside, quercetin 3-O-beta-D-6''-O-acetylglucoside, and rutin, caffeic acid, alkaloids, S-petasin and iso-S-petasin, etc.

The benefits
Conventional, complementary, and alternative options for seasonal allergies study showed several dietary supplements, such as butterbur and vitamin C, have some preliminary evidence of that may be beneficiary to patients with seasonal allergic rhinitis. Although butterbur has hold some promise, complementary and alternative therapies have not been integrated into the general treatment armamentarium of allergic rhinitis. Also in the study of Herbal medicines for the treatment of allergic rhinitis, butterbur extract for allergic rhinitis (AR) is superior to placebo or similarly effective compared with nonsedative antihistamines for intermittent AR, researchers insist confirmation in larger and more rigorously designed clinical trials is warranted with a large sample size.

Side effects
1. Butterbur may be liver-toxic to liver and cause cancer due to the presence of pyrrolizidine alkaloids(a)
2. If you are pregnant please do not use Butterbur with out the permission of the related special field specialist
3. Allergic effect to certain people who are allergic to ragweed, marigold, daisy, etc.
4. Overdoses may cause indigestion, headache, nausea, vomiting, diarrhea, etc.
5. Etc.

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(1) Conventional, complementary, and alternative options for seasonal allergies by Moyad MA.(PubMed)
(2) Complementary and alternative medicine for allergic rhinitis by Man LX.(PubMed)
(3) Herbal medicines for the treatment of allergic rhinitis: a systematic review by Guo R, Pittler MH, Ernst E.(PubMed)