Which supplement works better to improve running performance: dimethylamylamine (dmaa) or vitamin e?

Ratings at a Glance

Supplement	Effectiveness Rating	Confidence Rating
Dimethylamylamine (DMAA)
Vitamin E

Effectiveness Rating: Dimethylamylamine (DMAA) vs Vitamin E

The effectiveness rating is a measure of the supplements' ability to improve running performance. This rating answers the question of whether or not a supplement does what it claims. The evidence shows neither dimethylamylamine (dmaa) nor vitamin e has the ability to improve running performance. Neither supplement will provide positive results for this claim.

Confidence Rating: Dimethylamylamine (DMAA) vs Vitamin E

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 dimethylamylamine (dmaa) and vitamin e 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.