Covering: 2000 to 2019 According to a 2012 survey from the Centers for Disease Control
and Prevention, approximately 18% of the US population uses natural products (including …

Human rhinoviruses (HRVs), first discovered in the 1950s, are responsible for more than
one-half of cold-like illnesses and cost billions of dollars annually in medical visits and …

Objective This report presents national estimates of the use of complementary health
approaches among children aged 4–17 years in the United States. Selected modalities are …

Background: Blinding patients in clinical trials is a key methodological procedure, but the
expected degree of bias due to nonblinded patients on estimated treatment effects is …

Background Echinacea plant preparations (family Asteraceae) are widely used in Europe
and North America for common colds. Most consumers and physicians are not aware that …

Objectives Herbal medicines, as a treatment method, have received a great deal of attention.
The effects of two herbal medicines namely Zingiber officinale and Echinacea on alleviation …

Brief overview Current evidence suggests that Echinacea supplementation may decrease
the duration and severity of acute respiratory tract infections; however, no studies using …

In recent years, the issue of herbal medicine-drug interactions has generated significant
concern. Such interactions can increase the risk for an individual patient, especially with …

Iota-carrageenan (IC) is active against respiratory viruses in vitro and was effective as nasal
spray in three previous clinical trials. The current trial served to further investigate IC in …

Background: The aim of this review was to systematically assess the literature on herbal
medicine for cough as a symptom of upper respiratory tract infections and common cold …