Which supplement works better to improve cardiovascular endurance: phosphorus or quercetin?

Ratings at a Glance

Supplement	Effectiveness Rating	Confidence Rating
Phosphorus
Quercetin

Effectiveness Rating: Phosphorus vs Quercetin

The effectiveness rating is a measure of the supplements' ability to improve cardiovascular endurance. This rating answers the question of whether or not a supplement does what it claims. Both phosphorus and quercetin have good (but not great) evidence showing they may be able to improve cardiovascular endurance. Both supplements should provide some positive results.

Confidence Rating: Phosphorus 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.

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