Which supplement works better to improve cycling performance: black pepper fruit extract (piperine) or caffeine anhydrous?

Ratings at a Glance

Supplement	Effectiveness Rating	Confidence Rating
Black Pepper Fruit Extract (Piperine)
Caffeine Anhydrous

Effectiveness Rating: Black Pepper Fruit Extract (Piperine) vs Caffeine Anhydrous

The effectiveness rating is a measure of the supplements' ability to improve cycling performance. This rating answers the question of whether or not a supplement does what it claims. The evidence shows caffeine anhydrous is better than black pepper fruit extract (piperine) in its ability to improve cycling performance. Caffeine Anhydrous should provide some positive results while black pepper fruit extract (piperine) will not.

Confidence Rating: Black Pepper Fruit Extract (Piperine) 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 black pepper fruit extract (piperine)'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.