Which supplement works better to increase testosterone: tribulus terrestris or zinc magnesium aspartate (zma)?

Ratings at a Glance

Supplement	Effectiveness Rating	Confidence Rating
Tribulus Terrestris
Zinc Magnesium Aspartate (ZMA)

Effectiveness Rating: Tribulus Terrestris vs Zinc Magnesium Aspartate (ZMA)

The effectiveness rating is a measure of the supplements' ability to increase testosterone. This rating answers the question of whether or not a supplement does what it claims. The evidence shows zinc magnesium aspartate (zma) is better than tribulus terrestris in its ability to increase testosterone. Zinc Magnesium Aspartate (ZMA) should provide some positive results while tribulus terrestris will not.

Confidence Rating: Tribulus Terrestris vs Zinc Magnesium Aspartate (ZMA)

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 tribulus terrestris and zinc magnesium aspartate (zma) have great confidence rating. This means both supplement's effectiveness ratings above are valid.