Which supplement works better to increase alertness: b vitamin complex or caffeine anhydrous?

Ratings at a Glance

Supplement	Effectiveness Rating	Confidence Rating
B Vitamin Complex
Caffeine Anhydrous

Effectiveness Rating: B Vitamin Complex vs Caffeine Anhydrous

The effectiveness rating is a measure of the supplements' ability to increase alertness. This rating answers the question of whether or not a supplement does what it claims. Both b vitamin complex and caffeine anhydrous have great evidence backing up their ability to increase alertness. They should both provide positive results.

Confidence Rating: B Vitamin Complex 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 b vitamin complex'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.