Does p-synephrine work?

Overall Effectiveness Rating for P-Synephrine

The overall effectiveness rating for p-synephrine is 1.8 out of 3. This rating means there is some evidence that using p-synephrine may lead to positive results. This rating also means that some evidence does not back up all claims. Below you can find individual ratings for specific claims.

Overall Confidence Rating for P-Synephrine

There are 2 studies in the database on p-synephrine; the confidence rating is 27. 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 p-synephrine as a whole. There are also individual ratings for the claims below.

Products Containing P-Synephrine

Products Containing P-Synephrine
Pre Shred
Thermo Fitt
Burner Metabolic Igniter
Thermo Shred
Full list of all 17 products containing P-Synephrine.

Individual Claims

The overall ratings above do no necessarily reflect each claim about p-synephrine. 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.

Performance Claims Effectiveness Rating Confidence Rating
improve muscular endurance
increase strength

Mental Health Claims Effectiveness Rating Confidence Rating
improve cognitive ability


Title of Study
Effects of acute ingestion of a pre-workout dietary supplement with and without p-synephrine on resting energy expenditure, cognitive function and exercise performance
The effects of supplementation with P-Synephrine alone and in combination with caffeine on resistance exercise performance