Which supplement works better to reduce duration of the common cold: colostrum powder or echinacea purpurea?

Ratings at a Glance

Supplement	Effectiveness Rating	Confidence Rating
Colostrum Powder
Echinacea Purpurea

Effectiveness Rating: Colostrum Powder vs Echinacea Purpurea

The effectiveness rating is a measure of the supplements' ability to reduce duration of the common cold. This rating answers the question of whether or not a supplement does what it claims. The evidence shows neither colostrum powder nor echinacea purpurea has the ability to reduce duration of the common cold. Neither supplement will provide positive results for this claim.

Confidence Rating: Colostrum Powder vs Echinacea Purpurea

Another factor to take into account when comparing supplements is the confidence rating. This rating is a measure of how valid each supplement's effectiveness rating is. Remember, the confidence rating is a measure of how much you can trust the effectiveness rating. This rating is based on how many studies are included in the database on a supplement's claims. Ideally, you want a high effectiveness AND confidence rating.

Both colostrum powder and echinacea purpurea have low confidence ratings. This means neither supplement has an adequate amount of research to back up this claim. A low confidence rating questions the validity of the effectiveness rating.