Which supplement works better to improve muscular endurance: beta alanine or caffeine anhydrous?

Ratings at a Glance

Supplement	Effectiveness Rating	Confidence Rating
Beta Alanine
Caffeine Anhydrous

Effectiveness Rating: Beta Alanine vs Caffeine Anhydrous

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

Confidence Rating: Beta Alanine vs Caffeine Anhydrous

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 beta alanine and caffeine anhydrous have great confidence rating. This means both supplement's effectiveness ratings above are valid.