Which supplement works better to increase testosterone: d-aspartic acid or zinc magnesium aspartate (zma)?

Ratings at a Glance

Supplement	Effectiveness Rating	Confidence Rating
D-Aspartic Acid
Zinc Magnesium Aspartate (ZMA)

Effectiveness Rating: D-Aspartic Acid 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 d-aspartic acid in its ability to increase testosterone. Zinc Magnesium Aspartate (ZMA) should provide some positive results while d-aspartic acid will not.

Confidence Rating: D-Aspartic Acid 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 d-aspartic acid'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.