Does vitamin c reduce frequency of the common cold?
The effectiveness rating is a measure of how well vitamin c is able to reduce frequency of the common cold. The overall rating for this claim is 3 out of 3. The research shows the supplement's ability to deliver on this particular claim is warranted. Using Vitamin C to reduce frequency of the common cold will most likely lead to positive results.
The confidence rating is a mesure of how valid the effectiveness rating is. This rating is based on how many studies are included in the database on this topic.
There is one study in the database on vitamin c; the confidence rating is 20. A score above 80 means the effectiveness rating for this supplement is reliable. A score under 80 means there is insufficient evidence to ensure a reliable effectiveness rating.
|Title of Study|
|Effect of vitamin C on common cold: randomized controlled trial|