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Effects of echinacea on the frequency of upper respiratory tract symptoms: a randomized, double-blind, placebo-controlled trial
BACKGROUND: Upper respiratory tract infection symptoms are a common cause of morbidity. Herbal preparations of the plant Echinacea purpurea have immune-enhancing properties. OBJECTIVE: To compare the frequency of upper respiratory tract symptoms in individuals receiving E purpurea capsules and those...
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| Publicat a: | Ann Allergy Asthma Immunol |
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| Autors principals: | , , , |
| Format: | Artigo |
| Idioma: | Inglês |
| Publicat: |
American College of Allergy, Asthma & Immunology. Published by Elsevier Inc.
2008
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| Matèries: | |
| Accés en línia: | https://ncbi.nlm.nih.gov/pmc/articles/PMC7129680/ https://ncbi.nlm.nih.gov/pubmed/18450126 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1016/S1081-1206(10)60603-5 |
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