Which supplement works better to improve running performance: beta alanine or quercetin?

Ratings at a Glance

Supplement	Effectiveness Rating	Confidence Rating
Beta Alanine
Quercetin

Effectiveness Rating: Beta Alanine vs Quercetin

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 beta alanine is better than quercetin in its ability to improve running performance. Beta Alanine should provide some positive results while quercetin will not.

Confidence Rating: Beta Alanine vs Quercetin

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.

Beta Alanine's confidence rating is higher than quercetin's. This means beta alanine's effectiveness rating from above is more valid. This does not necessarily mean that beta alanine works better, it simply means the evidence (included in this database) backing up beta alanine is more established.