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

Ratings at a Glance

Supplement	Effectiveness Rating	Confidence Rating
Casein Protein
Tribulus Terrestris

Effectiveness Rating: Casein 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 casein protein to increase strength is much better than the evidence backing up tribulus terrestris. Casein Protein should provide positive results while tribulus terrestris will not.

Confidence Rating: Casein 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.

Both casein protein and tribulus terrestris 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.