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

Ratings at a Glance

Supplement	Effectiveness Rating	Confidence Rating
Phosphatidylserine
Zinc Magnesium Aspartate (ZMA)

Effectiveness Rating: Phosphatidylserine 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. Both phosphatidylserine and zinc magnesium aspartate (zma) have good (but not great) evidence showing they may be able to increase testosterone. Both supplements should provide some positive results.

Confidence Rating: Phosphatidylserine 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.

Zinc Magnesium Aspartate (ZMA)'s confidence rating is higher than phosphatidylserine's. This means zinc magnesium aspartate (zma)'s effectiveness rating from above is more valid. This does not necessarily mean that zinc magnesium aspartate (zma) works better, it simply means the evidence (included in this database) backing up zinc magnesium aspartate (zma) is more established.