Which supplement works better to improve cognitive ability: dehydroepiandrosterone (dhea) or huperzine a?

Ratings at a Glance

Supplement	Effectiveness Rating	Confidence Rating
Dehydroepiandrosterone (DHEA)
Huperzine A

Effectiveness Rating: Dehydroepiandrosterone (DHEA) vs Huperzine A

The effectiveness rating is a measure of the supplements' ability to improve cognitive ability. This rating answers the question of whether or not a supplement does what it claims. The evidence backing up huperzine a to improve cognitive ability is much better than the evidence backing up dehydroepiandrosterone (dhea). Huperzine A should provide positive results while dehydroepiandrosterone (dhea) will not.

Confidence Rating: Dehydroepiandrosterone (DHEA) vs Huperzine A

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 dehydroepiandrosterone (dhea) and huperzine a 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.