Does aspartame work?

Overall Effectiveness Rating for Aspartame

The overall effectiveness rating for aspartame is 1 out of 3. This rating means there is little to no evidence aspartame does what it claims. Using this supplement will not lead to positive results.

Overall Confidence Rating for Aspartame

There is one study in the database on aspartame; the confidence rating is 20. A score above 80 means the effectiveness rating for this supplement is reliable. A score under 80 means there is insufficient evidence to ensure a reliable effectiveness rating. Note, this rating is for aspartame as a whole. There are also individual ratings for the claims below.

Individual Claims

The overall ratings above do no necessarily reflect each claim about aspartame. Individual claims can have higher or lower ratings. For example, some supplements may have a lot of backing for one claim, but be completely useless for another. Click on claims below for more information.

Energy Balance (calories in & calories out) Claims Effectiveness Rating Confidence Rating
decrease calorie intake

Mental Health Claims Effectiveness Rating Confidence Rating
improve mood


Title of Study
Phenylalanine and aspartame fail to alter feeding behavior, mood and arousal in men