Which supplement works better to improve sports performance: beetroot juice or caffeine anhydrous?

Ratings at a Glance

Supplement	Effectiveness Rating	Confidence Rating
Beetroot Juice
Caffeine Anhydrous

Effectiveness Rating: Beetroot Juice vs Caffeine Anhydrous

The effectiveness rating is a measure of the supplements' ability to improve sports performance. This rating answers the question of whether or not a supplement does what it claims. The evidence backing up caffeine anhydrous to improve sports performance is much better than the evidence backing up beetroot juice. Caffeine Anhydrous should provide positive results while beetroot juice will not.

Confidence Rating: Beetroot Juice 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.

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