منابع مشابه
Echinacea for treating the common cold: a randomized trial.
BACKGROUND Echinacea is widely used to treat the common cold. OBJECTIVE To assess the potential benefits of echinacea as a treatment of common cold. DESIGN Randomized, controlled trial. (ClinicalTrials.gov registration number: NCT00065715) SETTING Dane County, Wisconsin. PATIENTS 719 patients, aged 12 to 80 years, with new-onset common cold. INTERVENTION Patients were assigned to 1 of...
متن کاملEchinacea for preventing and treating the common cold.
Echinacea preparations are widely used for common cold. Many consumers and healthcare professionals are not aware that products available under the term Echinacea may differ in their composition, due to the use of different species, plant parts, extraction methods and addition of other components. In 2005, a Cochrane review has been published to provide objective evidence whether the various Ec...
متن کاملEchinacea for Treating the Common ColdA Randomized TrialA Randomized Trial
Results: Of the 719 patients enrolled, 713 completed the protocol. Mean age was 33.7 years, 64% were female, and 88% were white. Mean global severity was 236 and 258 for the blinded and unblinded echinacea groups, respectively; 264 for the blinded placebo group; and 286 for the no-pill group. A comparison of the 2 blinded groups showed a 28-point trend (95% CI, 69 to 13 points) toward benefit f...
متن کاملEchinacea, vitamin C, the common cold, and blinding.
Sir—Caruso and Gwaltney [1] reviewed the effect of echinacea treatment on the common cold, identifying 9 placebo-controlled trials. A quality score was calculated for each trial, and the main focus was put on 2 trials that received maximum scores and reported negative results. However, the use of quality scores in literature reviews has been strongly discouraged. For example, Greenland [2] comm...
متن کاملTreatment of the common cold with echinacea: a structured review.
BACKGROUND Echinacea is a herbal preparation that is frequently used to treat the common cold. Spending on echinacea in the United States has risen to >300 million dollars annually. METHODS A total of 322 articles related to echinacea and colds, including 9 placebo-controlled clinical trials, were identified using the Medline and PubMed databases. Eleven features of experimental design that a...
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ژورنال
عنوان ژورنال: Annals of Internal Medicine
سال: 2010
ISSN: 0003-4819
DOI: 10.7326/0003-4819-153-12-201012210-00003