Which supplement works better to increase strength: caffeine anhydrous or glutamine?

Ratings at a Glance

Supplement	Effectiveness Rating	Confidence Rating
Caffeine Anhydrous
Glutamine

Effectiveness Rating: Caffeine Anhydrous vs Glutamine

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

Confidence Rating: Caffeine Anhydrous vs Glutamine

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 glutamine'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.