Which supplement works better to increase strength: soy protein or tribulus terrestris?

Ratings at a Glance

Supplement	Effectiveness Rating	Confidence Rating
Soy Protein
Tribulus Terrestris

Effectiveness Rating: Soy Protein vs Tribulus Terrestris

The effectiveness rating is a measure of the supplements' ability to increase strength. This rating answers the question of whether or not a supplement does what it claims. The evidence backing up soy protein to increase strength is much better than the evidence backing up tribulus terrestris. Soy Protein should provide positive results while tribulus terrestris will not.

Confidence Rating: Soy Protein vs Tribulus Terrestris

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.

Soy Protein's confidence rating is higher than tribulus terrestris's. This means soy protein's effectiveness rating from above is more valid. This does not necessarily mean that soy protein works better, it simply means the evidence (included in this database) backing up soy protein is more established.