Which supplement works better to improve cardiovascular endurance: glycerol or vitamin b2 (riboflavin)?

Ratings at a Glance

Supplement	Effectiveness Rating	Confidence Rating
Glycerol
Vitamin B2 (Riboflavin)

Effectiveness Rating: Glycerol vs Vitamin B2 (Riboflavin)

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. The evidence backing up glycerol to improve cardiovascular endurance is much better than the evidence backing up vitamin b2 (riboflavin). Glycerol should provide positive results while vitamin b2 (riboflavin) will not.

Confidence Rating: Glycerol vs Vitamin B2 (Riboflavin)

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.

Glycerol's confidence rating is higher than vitamin b2 (riboflavin)'s. This means glycerol's effectiveness rating from above is more valid. This does not necessarily mean that glycerol works better, it simply means the evidence (included in this database) backing up glycerol is more established.