Which supplement works better to reduce muscle damage: arginine or black pepper fruit extract (piperine)?

Ratings at a Glance

Supplement	Effectiveness Rating	Confidence Rating
Arginine
Black Pepper Fruit Extract (Piperine)

Effectiveness Rating: Arginine vs Black Pepper Fruit Extract (Piperine)

The effectiveness rating is a measure of the supplements' ability to reduce muscle damage. This rating answers the question of whether or not a supplement does what it claims. The evidence shows black pepper fruit extract (piperine) is better than arginine in its ability to reduce muscle damage. Black Pepper Fruit Extract (Piperine) should provide some positive results while arginine will not.

Confidence Rating: Arginine vs Black Pepper Fruit Extract (Piperine)

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 arginine and black pepper fruit extract (piperine) have low confidence ratings. This means neither supplement has an adequate amount of research to back up this claim. A low confidence rating questions the validity of the effectiveness rating.